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DEN - SAN

$39 Find cheap flights from Denver to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to San Diego departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Mon 5/27
Mon 6/3

Search hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to San Diego, as well as popular online travel agencies
In the last 7 days travelers have searched 43,623,357 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Denver to San Diego (DEN-SAN)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:30 am - 7:00 amDEN-SAN
2h 30mnonstop
10:26 am - 1:56 pmSAN-DEN
2h 30mnonstop
$57Frontier
Find Deal
Tue, May 14 - Tue, May 21
6:44 pm - 8:15 pmDEN-SAN
2h 31mnonstop
10:11 am - 1:41 pmSAN-DEN
2h 30mnonstop
$58Frontier
Find Deal
Wed, May 15 - Sat, May 18
5:01 am - 6:24 amDEN-SAN
2h 23mnonstop
2:54 pm - 6:28 pmSAN-DEN
2h 34mnonstop
$64Frontier
Find Deal
Wed, Sep 25 - Sat, Sep 28
5:35 am - 7:04 amDEN-SAN
2h 29mnonstop
5:55 pm - 11:10 amSAN-DEN
16h 15m1 stop
Sun, May 26 - Sun, Jun 2
4:32 pm - 6:02 pmDEN-SAN
2h 30mnonstop
5:35 pm - 9:00 amSAN-DEN
14h 25m1 stop
Sat, May 25 - Mon, May 27
6:00 pm - 10:47 pmDEN-SAN
5h 47m1 stop
10:10 am - 3:45 pmSAN-DEN
4h 35m1 stop
$197Delta
Find Deal
Sat, May 25 - Wed, May 29
5:30 am - 8:55 amDEN-SAN
4h 25m1 stop
5:15 pm - 10:54 pmSAN-DEN
4h 39m1 stop
$198Delta
Find Deal
Sat, Jun 8 - Tue, Jun 11
10:15 am - 4:20 pmDEN-SAN
7h 05m1 stop
5:10 pm - 8:45 amSAN-DEN
14h 35m1 stop
$199Sun Country Air
Find Deal
Tue, Jun 11 - Sat, Jun 15
12:07 pm - 3:11 pmDEN-SAN
4h 04m1 stop
4:20 pm - 9:53 pmSAN-DEN
4h 33m1 stop
$203American Airlines
Find Deal
Wed, Jun 12 - Sat, Jun 15
6:53 pm - 9:41 pmDEN-SAN
3h 48m1 stop
4:20 pm - 9:53 pmSAN-DEN
4h 33m1 stop
$213American Airlines
Find Deal
Thu, May 30 - Wed, Jul 3

Flights from Denver to San Diego - Travel Insights & Trends

Get data-powered insights and trends into flights from Denver to San Diego to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Denver to San Diego?

The average price of all flights from Denver to San Diego clicked on KAYAK for each day over the last 12 months.
For Denver to San Diego, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from San Diego back to Denver, the best deals are generally found on Wednesday, with Sunday being the most expensive.

What is the cheapest month to fly from Denver to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Denver to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Denver to San Diego is January, where tickets cost $128 on average. On the other hand, the most expensive months are March and December, where the average cost of tickets is $269 and $248 respectively.

How far in advance should I book a flight from Denver to San Diego?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Denver to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Denver to San Diego, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 33 days before departure.

Which airlines provide the cheapest flights from Denver to San Diego?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to San Diego from Denver were found on Frontier ($39) and Delta ($98), and the lowest round-trip tickets were found on Frontier ($57) and Delta ($197).

Which airlines fly most frequently between Denver and San Diego?

Southwest connects Denver to San Diego with up to 7 flights per day. United Airlines also offers 7 flights per day, while Frontier follows with 3 flights per day.

Which airlines fly non-stop between Denver and San Diego?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Denver to San Diego.
There are 3 airlines that fly nonstop from Denver to San Diego. They are: Frontier, Southwest and United Airlines. The cheapest price of all airlines flying this route was found with Frontier at $53 for a one-way flight. On average, the best prices for this route can be found at Frontier.

How many flights are there between Denver and San Diego per day?

Each day, there are between 17 and 22 nonstop flights that take off from Denver and land in San Diego, with an average flight time of 2h 24m. The most common departure time is 1:00 pm and most flights take off in the morning. Each week, there are 131 flights. The most frequent day of departure is Sunday, when 17% of all weekly flights depart. The fewest flights depart on a Tuesday.

Which cabin class options are there for flights between Denver and San Diego?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Denver to San Diego take?

The duration of a nonstop flight to San Diego from Denver is typically 2h 22m. The journey crosses a distance of 852 miles.

What’s the earliest departure time from Denver to San Diego?

Early birds can take the earliest flight from Denver at 5:30 am and will be landing in San Diego at 7:00 am.

What’s the latest departure time from Denver to San Diego?

If you prefer to fly at night, the latest flight from Denver to San Diego jets off at 9:40 pm and lands at 11:00 pm.

Good to know

Low season

January

High season

March

Cheapest flight

$39
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly with an average 33% increase in price.
Flight from Denver to San Diego

When to book flights from Denver to San Diego

Are your dates flexible? Find out the best times to travel from Denver to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to San Diego

  • Where can I park at Denver International Airport (DEN)?

    Denver Airport (DEN) offers several options for parking. The Garage East Parking and Garage West Parking garages are located on either side of the main terminal. Next to these garages you’ll find the Economy East and Economy West parking lots, which are connected to the main terminal by pedestrian walkways and the airport’s free shuttle service. Two satellite shuttle lots (Mt. Elbert and Pikes Peak) offer a very low parking rate and free shuttle service to the airport. You should allow at least 30 minutes to reach the terminal from these lots.

  • Can I take the commuter train to Denver International Airport (DEN)?

    Yes, Denver’s A Line commuter rail service runs between Denver Union Station in Downtown Denver to the airport. The trip takes just under 40min, and you’ll arrive at the airport’s train station in the DEN Transit Center, which is a short walk from the terminal.

  • Can I stay at an on-site hotel before my early-morning departure from Denver Airport (DEN)?

    Yes, the Westin Denver International Airport is DEN’s only on-site hotel. It is located above the Transit Center, making for an easy walk to the Jeppesen Terminal. Hotel amenities include valet parking and a cocktail bar that serves snacks and light meals.

  • What lounges are available at Denver International Airport (DEN)?

    There are six airline lounges at Denver International Airport. The American Airlines Admirals Club, British Airways Executive Club, and Delta Sky Club are all located in the Gate A concourse, and United has three lounges (Club East, Club West, and Club Fly) in the Gate B concourse. In addition to the airline lounges, select American Express cardholders can relax in the Centurion Lounge in the Gate C concourse while US service members and their families can enjoy some time before their flight at the USO Denver, located just over the bridge to Gate A from the main terminal.

  • Where is the car rental center at San Diego Airport (SAN)?

    At San Diego International Airport (SAN), all of the car rental counters are located off-site in the Consolidated Rental Car Center. This center is connected to the airport by the free shuttle bus service. The rental car lot is next to the Rental Car Center.

  • Can I take a bus into the city from San Diego International Airport (SAN)?

    Yes, the #992 buses of San Diego’s Metropolitan Transit System pick up passengers at both of SAN’s terminals and make regular trips to Broadway and State Street in Downtown San Diego. The trip downtown takes less than 20min.

  • Does San Diego International Airport have lactation rooms?

    You can use three lactation rooms located post-security at Terminal 1 West Rotunda, second level, near the elevator. There’s also a room at Terminal 1 East Rotunda on the ground level after the security checkpoint. In Terminal 2, the lactation room is on the second level close to Gate 34-35. The rooms are fitted with a hand washing station, comfortable seating, artwork, electrical outlets, soft lighting, and a children’s seat.

  • Are there nonstop flights from Denver to San Diego?

    Different airlines, including United Airlines and Frontier, fly nonstop from Denver International Airport to San Diego International Airport. Frontier also flies through the McCarran International Airport (LAS), but the flight could take longer. Book through KAYAK for details on different flights if you want to find the shortest route.

  • Can I travel with my pet through Denver International Airport?

    Yes, the Denver International Airport allows pets. To help you manage your pet, the airport offers a pet relief area in each concourse. There’s also one at the Jeppesen Terminal. The relief rooms are located post-security in the cores of A, B, and C Gates. All pet relief rooms have artificial turf flooring and a drainage system. There are disposal containers and bags.

  • Does San Diego International Airport offer services for disabled passengers?

    Travelers who need special assistance can contact their airlines prior to the trip to request assistance. At the San Diego International Airport, all terminals are wheelchair accessible. You can find an accessible shuttle, and if you need help, there are telephones at the airport’s reservation boards.

  • Is there complimentary Wi-Fi at San Diego International Airport?

    Wi-Fi at the San Diego International Airport is available in 2h sessions. If you want to connect quickly, enable your device's wireless connection and search for #SANfreewifi, then connect. To use the service longer, you just need to log back in when the session expires.

  • What is the cheapest flight from Denver to San Diego?

    In the last 3 days, the lowest price for a flight from Denver to San Diego was $39 for a one-way ticket and $57 for a round-trip.

  • Do I need a passport to fly between Denver and San Diego?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Denver to San Diego?

    Denver and San Diego are both served by 1 main airport. You will leave Denver from Denver Intl and will be arriving at San Diego.

  • Which airlines offer Wi-Fi service onboard planes from Denver to San Diego?

    Delta, American Airlines, Alaska Airlines, and JetBlue offer inflight Wi-Fi service on the Denver to San Diego flight route.

  • Which aircraft models fly most regularly from Denver to San Diego?

    The Airbus A320neo is the aircraft model that flies most regularly on the Denver to San Diego flight route.

  • Which airline alliances offer flights from Denver to San Diego?

    Star Alliance is the only airline alliance operating flights between Denver and San Diego.

  • On which days can I fly direct from Denver to San Diego?

    There are nonstop flights from Denver to San Diego on a daily basis.

  • Which is the best airline for flights from Denver to San Diego, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Denver to San Diego are Delta and United Airlines. With an average price for the route of $267 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $297 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Denver to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Denver with another airline. Booking your flights between Denver and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from DEN to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $74 or less one-way and $84 or less round-trip.
  • Denver International Airport (DEN) is located about 25 miles northeast of Denver’s city center. It is the only international airport in the greater Denver area, and it’s a hub for Frontier Airlines, Southwest Airlines, and United Airlines.
  • Denver Airport (DEN) has one main terminal, the Jeppesen Terminal, plus three concourses, called Gates A, B, and C. Passengers can walk between the terminal and Gate A, but you must take the airport’s automated people-mover train to access Gates B and C.
  • Located less than 5 miles northwest of Downtown San Diego, San Diego International Airport (SAN) is a focus city for both Alaska Airlines and Southwest Airlines.
  • If you’re in the Front Range Urban Corridor or metropolitan Denver, you can use the Denver International Airport (DEN) to fly to San Diego, California.
  • At Denver International Airport, you can visit several restaurants, including Chick-fil-A at the B Gates Center Core, Ben & Jerry’s Ice Cream at A Gates Center Core, and Dazbog Coffee at C Gates near C47.
  • You can use free Wi-Fi at Denver International Airport. To connect, enable your wireless and locate “DEN Airport Free WiFi.”
  • There’s an Interfaith Chapel and Prayer Hall at the Denver International Airport in the Jeppesen Terminal, Level 6. It’s open 24h a day. You can join a Catholic Mass on Sundays at 1pm.
  • Fights from the Denver International Airport to San Diego land at the San Diego International Airport (SAN), which offers access to downtown San Diego and nearby areas.
  • For quick snacks, the San Diego International Airport offers vending machines located at Terminal 1 in the parking lot under the pedestrian bridge. Others are in Terminal 2 at the Parking Plaza in the lower level near the elevator cores.
  • For shoeshine services at San Diego International Airport, you can access the service at Terminal 2 East near Gate 23 or Terminal 2 West at the North Concourse. The shoeshine service is also available at Terminal 1 above the rotunda escalator.
  • Passengers can use luggage carts provided by Smarte Carte, which cost about $5 per cart. If you’re arriving in the International Arrivals area, the carts are free.
See more tips

Prefer to fly non-stop from Denver to San Diego?

Find which airlines fly direct from Denver Intl to San Diego, which days they fly and book direct flights.

Nonstop departures

Denver Intl to San Diego

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +3 more

Air Canada, Frontier, +4 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights

Nonstop returns

San Diego to Denver Intl

Monday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Tuesday

Air Canada, Frontier, Lufthansa, +3 more

Air Canada, Frontier, +4 more

Wednesday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Thursday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Friday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

Saturday

Air Canada, Copa Airlines, Frontier, +3 more

Air Canada, Copa Airlines, +4 more

Sunday

Air Canada, Copa Airlines, Frontier, +4 more

Air Canada, Copa Airlines, +5 more

See more direct flights
See more direct flights

Top 5 airlines serving from Denver to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Denver to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10951 reviews
7.9comfort
8.0entertainment
8.6crew
8.2boarding
7.4food
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

This flight was supposed to land at 10:55 pm on January 14th. Instead, it landed at 3:20 am on Monday, January 15th, resulting in a completely lost day due to not going to bed until 5:00 am.

Crew was not friendly when I went to request a seat change.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

Too many fees (but that seems to apply to all airlines nowadays)

For a 22 minute flight all you expect is for it to be safe and comfortable

Flight was on time. Staff were friendly. I paid for Economy Plus but was required to check my standard carry-on luggage due to lack of space on the aircraft. This cost me 30 minutes, unexpectedly, in waiting at the baggage claim. This experience did not meet my expectations.

Everything was very good. Boarding and takeoff were on time and organized. Had a good flight

Wheelchair assistance was not complete. The person left me at the departure gate without informing the groundstaff of my requirements. I had to walk to the departure counter to ask for help to reach the plane door. The crew informed me that in future they were not allowed to help passengers like me, senior citizen and Wheelchair passenger with placing their carry on bags in the overhead compartments!

Flight was delayed by over an hour and gate checked bags took 15 minutes to be delivered to the jet bridge.

Seats are way too snug for my hip to knee ratio and the recline on the seat in front of me made my experience worst. My legs had no room at all. Not a plane for people 6 ft or over unless you fly first class.

Delayed for maintenance issue?? Should have been addressed before boarding. Put my bag on an earlier flight, but didn’t ask if I wanted to change to an earlier flight. Arrived to find my bag locked up and no agent to be found when I landed.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

It was fine. Boarding was a little rude. On flight staff was great. The cost to purchase everything was a bit annoying but I get that's the business model.

I liked the fast check in and boarding. The flight fare could be a lot less than what I paid…..

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Left Denver late, then sat on tarmac 30 min after arrival

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

Everything was good, 20/30 minutes late waiting on a crew member. It’s hard to keep employees. Or serious employees I know. I remember one flight from Houston of Frontiers was almost 18 hours late. And another 4 hours late very poor. But I would rather be late and safe than the on the news. Thank you.

Bought seats on the flight and they were supposed to be 2 and a jumpseat. Plane clearly changed and it was a regular 3 seat row. Asked for a refund and was denied. If I wanted to sit next to someone else I wouldn't have bought the seats..

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

It’s a cheap airline and I wish if they had better seats.

Seats are cramped and uncomfortable. You have to pay for everything and it is very expensive.

For a busy travel season, everything was clearly marked, correct, and smooth. My favorite travel description is “UNEVENTFUL,” and this trip met the mark!

Book cheap flights from Denver to San Diego

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Denver to San Diego found on KAYAK in the last 72 hours.
5/28Tue
nonstopFrontier
2h 29mDEN-SAN
$39
5/19Sun
nonstopFrontier
2h 29mDEN-SAN
$40
6/1Sat
1 stopDelta
4h 45mDEN-SAN
$98
7/30Tue
1 stopDelta
4h 15mDEN-SAN
$99
5/23Thu
2 stops
13h 32mDEN-SAN
$125
5/31Fri
2 stops
16h 49mDEN-SAN
$128
6/1Sat
nonstopUnited Airlines
2h 22mDEN-SAN
$192
5/18Sat
2 stopsUnited Airlines
14h 52mDEN-SAN
$209
6/26Wed
3 stopsAmerican Airlines
10h 31mDEN-SAN
$612
6/30Sun
3 stopsAmerican Airlines
10h 31mDEN-SAN
$711

Search by stops

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Last minute flights from Denver to San Diego

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Denver to San Diego that are departing in the next 10 days.
5/2Thu
nonstopFrontier
2h 32mDEN-SAN
5/6Mon
nonstopFrontier
2h 34mSAN-DEN
$168
5/2Thu
multi-stopFrontier
7h 20mDEN-SAN
5/6Mon
multi-stopFrontier
23h 16mSAN-DEN
$176
4/29Mon
multi-stopFrontier
9h 42mDEN-SAN
5/30Thu
nonstopFrontier
2h 29mSAN-DEN
$178
4/29Mon
multi-stop
6h 29mDEN-SAN
5/3Fri
multi-stop
16h 55mSAN-DEN
$225
5/2Thu
multi-stop
5h 16mDEN-SAN
5/5Sun
multi-stop
8h 32mSAN-DEN
$343
5/2Thu
multi-stopUnited Airlines
7h 36mDEN-SAN
5/2Thu
multi-stopUnited Airlines
12h 23mSAN-DEN
$686
4/29Mon
multi-stopUnited Airlines
5h 32mDEN-SAN
5/30Thu
multi-stopUnited Airlines
6h 14mSAN-DEN
$724
4/30Tue
multi-stopDelta
6h 43mDEN-SAN
5/7Tue
multi-stopDelta
4h 58mSAN-DEN
$812
4/30Tue
multi-stopDelta
6h 43mDEN-SAN
5/9Thu
multi-stopDelta
4h 58mSAN-DEN
$832
4/29Mon
multi-stopAmerican Airlines
9h 26mDEN-SAN
5/1Wed
multi-stopAmerican Airlines
10h 09mSAN-DEN
$1,365

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Denver - San Diego Flights

Departure:

Denver (DEN)United States

Destination:

San Diego (SAN)United States

Return flight deals:

San Diego - Denver

Cabin classes:

$498
$547
$366
$53