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$241 Find cheap flights from Portugal to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Francisco departing on 10/3. 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
Fri 7/12
Fri 7/19

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These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco
These are the airlines KAYAK users have selected most often from within our search results for flights to San Francisco
In the last 7 days travelers have searched 44,148,666 times on KAYAK, and here is why:

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Flights to San Francisco - Travel Insights & Trends

Get data-powered insights and trends for flights to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest day to fly to San Francisco?

The average price of all flights to San Francisco clicked on KAYAK for each day over the last 12 months.
Based on KAYAK data, the cheapest day to fly to San Francisco is Thursday where tickets can be as cheap as $725. On the other hand, the most expensive day to fly is Sunday, where prices are $948 on average.

What is the cheapest month to fly to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to San Francisco, 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 to San Francisco is February, where tickets cost $651 on average for one-way flights. On the other hand, the most expensive months are July and June, where the average cost of tickets from Portugal is $1,165 and $938 respectively. For return trips, the best month to travel is February with an average price of $651.

What is the cheapest time of day to fly to San Francisco?

The average price for all flights to San Francisco depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to San Francisco is generally at night, when flights cost $678 on average. The most expensive time of day to fly to San Francisco is generally in the morning, which is peak travel time and where the average cost of a ticket is $767.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Lisbon $634 one-way - $792 round-trip.

How far in advance should I book a flight to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights to San Francisco, 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, you should book around 0 weeks before departure. For the absolute cheapest price, our data suggests you should book 38 days before departure.

Which airline offers the most flights to San Francisco?

Of the 10 airlines that fly to San Francisco, United Airlines offers the most flights, with around 1,958 per week, followed by Alaska Airlines with 655 flights per week.

How long is the flight to San Francisco?

The duration of your flight to San Francisco depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular routes to San Francisco on KAYAK are from Lisbon, which takes 12h 40m, Porto, which takes 16h 55m, and Funchal, which takes 37h 35m.

How many direct flights to San Francisco are there each day?

There are around 546 direct flights from within Portugal to San Francisco every day. Most flights depart in the morning, with 6:00 am the most common departure time and 45% of flights departing in the morning.

How many direct flights to San Francisco are there each week?

Each week there are around 3,818 direct flights from within Portugal to San Francisco. The most common day for departures is Thursday, with 15% of flights taking off on this day.

How many long-haul flights are there to San Francisco each week?

There are not any medium-haul (3-6 hour flight duration) or short-haul (up to 3 hour flight duration) flights to San Francisco. Instead, there are 7 long-haul flights (6-12 hour flight duration), with the most arriving from Lisbon.

How many cities have direct flights to San Francisco?

From Portugal, there are direct flights to San Francisco from 1 city. This city is Lisbon and there are 7 direct flights each week.

Good to know

Low season

January

High season

August

Cheapest flight

$241
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Lisbon to San Francisco

FAQs - booking San Francisco flights

  • How far is San Francisco from central San Francisco?

    There are 12 miles between San Francisco city center and San Francisco.

  • What is the name of San Francisco’s airport?

    When flying to San Francisco, you'll arrive at San Francisco (SFO). The airport is also known as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $789. The cheapest price found on KAYAK in the last 2 weeks cost $571 and departed from Lisbon Humberto Delgado Airport.

  • How does KAYAK find such low prices on flights to San Francisco?

    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 to San Francisco.

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

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

  • What is the Hacker Fare option on flights to San Francisco?

    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 Francisco with an airline and back with another airline.

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

    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 Francisco 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 cheap flights to San Francisco

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

Prefer to fly non-stop to San Francisco?

Find which airlines fly direct to San Francisco, which days they fly and book direct flights.

Nonstop departures

Portugal to San Francisco

Monday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Tuesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Wednesday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

AIR PREMIA, ANA, Aer Lingus, +78 more

AIR PREMIA, ANA, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

AIR PREMIA, ANA, Aer Lingus, +80 more

AIR PREMIA, ANA, +81 more

See more direct flights

Nonstop returns

San Francisco to Portugal

Monday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Tuesday

ANA, Aer Lingus, Aeromexico, +79 more

ANA, Aer Lingus, +80 more

Wednesday

AIR PREMIA, ANA, Aer Lingus, +79 more

AIR PREMIA, ANA, +80 more

Thursday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Friday

AIR PREMIA, ANA, Aer Lingus, +78 more

AIR PREMIA, ANA, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +80 more

ANA, Aer Lingus, +81 more

Sunday

AIR PREMIA, ANA, Aer Lingus, +80 more

AIR PREMIA, ANA, +81 more

See more direct flights
See more direct flights

Top 5 airlines serving from Portugal to San Francisco

 
See real verified KAYAK customer reviews for airlines flying to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to San Francisco. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to San Francisco? 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 10000 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

2.0 MediocreFelipe, Jun 2024DTW - SAN
Read more about Delta reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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

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

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.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

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.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

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.

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

Crew Very nice people, The food was mediocre. Entertainment outdated. The English of the announcements were very hard to understand. Luckily there was nothing serious.

The flight crew was top notch. Total professionals, they worked to help everyone fit their luggage on board and get comfortable. Like many European airlines, dinner service included wine with no extra charge. Always a nice touch. On our layover, everyone needed to clear passport control, which looks like a horrible time sink when you have a connection. My compliments to the ground crew who tried to move people with tight connects to the front of the line. I don't know whether they were Air Portugal employees or not, but they were some people's heroes. I'm not a fan of airline pricing that doesn't give you a reasonably realistic idea of your total cost. Checked baggage on Air Portugal is very expensive and negates any other price advantage. Seat selection is also quite costly. My biggest complaint about this airline is their boarding process. There is no info available to passengers on the screens in the boarding lounges. Just long lines that stretch into other gate areas and too few people offering any clarifying info at all. Those who try to direct often ended up yelling into the crowd. On my last leg, they called for boarding groups over the PA system, but when I presented myself, I was sent back to the end of the single line even though others in later groups were ahead of me. It was a confusing mashup of two systems that left everyone disgruntled and took over an hour. I don't think I can recommend this airline if you have any other options.

Tap air portugal first has you pay for the flight. Then you realize that seats are extra. Had i known that i would have booked emirates instead for a few dollars more

Dreadful - queued to get onto a bus, stood for 10 minutes on the bus, drove to the plane, stood for another 25 minutes on the bus outside the plane. When allowed on we could only board from the front & were seated in the furthest row back. The second bus was allowed to board from the back so chaos ensued!. The flight was an hour late - nobody said why, nobody apologised. On arrival at Heathrow we stood for nearly 30 minutes before being allowed off - again with no explanation,

Efficiency was great - on-time takeoff and landing. Baggage arrived at destination (there's always slow baggage handling in Boston.) TAP food is spartan - bring your own. But the efficiency of the airline more than makes up for the mediocre cuisine.

On-time flight. Nothing out of the ordinary. The food offering upfront could be better.

Delayed takeoff was inconvenient. We should have boardrd later. Coffee/ beverage service on a 7:30 flight would have been good.

Flight from Lisbon to Barcelona was ok. Business flight Boston to Lisbon was awful. Attendants should pay more attention to Business Passengers and not be so stingy with water. Worse Business Flight I have ever taken. Food was awful. Cramped for space.

Adequate. You get what you pay for. Absolutely no frills but a cost effective way to travel between European countries.

Disastrous boarding. Entered air bridge only to descend stairs and enter a bus. Plane had insufficient storage, was old and chair recline was damaged. Air stewardess was sullen.

United delayed the flight to assist customers to make the connection. The Ohara customs area was overwhelm which created an issue for customers trying to make the Little Rock connection. The delayed allow several customers to make the final flight into Little Rock.

The trip was good except for the delay that caused a connection issue in Chicago.

Terrible. Missed our flight to Newark as well as our flight to London. Complete disaster

The flight was wondering, especially the special assistance from airplane to airplane!

They canceled our flight last minute and we had to get another flight with twice the cost

Captain waited 45 minutes for late passengers boarding from Washington DC to Munich which was nice for them but caused our luggage to miss boarding our connection on to Bucharest. We then did not receive our luggage for about 48 hours after landing which was very inconvenient for our travel.

The worst experience of my life and I have been flying for 33 years

We were very upset when we checked in for our flight to be charged 208,00 euro for luggage fees when the site clearly states we are authorized one checked bag each and one carry-on. We have never experienced anything like this with Lufthansa and are very disappointed. We should be reimbursed this erroneous charge. I can forward all receipts once I am able to scan the them.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Every host and pilot were very professional. My next flight would be upgraded from economy to the next group.

I asked for a window seat and when I got on the plane 24A did not have a window so was very not happy, but good and entertainment was good and the staff was very good, so the only complaint was the seating.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

My seat was in a good row. In our section it was the first row. But it was difficult tooperate seat entertainment features > table, screen, even though I often fly.

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

There was nothing to like besides the crew. The comfort of the airplane was poor (seat did not work properly and it was not comfortable). The “entertainment” system did not work! On a flight that last nearly eight hours, (which is advertised as having excellent entertainment options), that is unacceptable! Passengers should have been given free WiFi for the flight. The food served on the flight was below school lunch grade food. (With one exception, the ice cream snack). The chicken entree was tough and nearly impossible to cut and eat. The “pizza” served later in the flight was worse. The chicken pizza had a dry crust and the “toppings” were equally not enjoyable. The amount of chicken and cheese were almost non existent. Overall not a flight we would want to repeat!!

There was a problem in the luggage because there were not porters

2-1/2 hours on tarmac after arrival to DFW, lost connection to London, 3 hours wait for customer assistance, stayed on our own account in DFW, no replacement flight for 5 days, had to cancel the entire travel and return to Monterrey today.

My worst flying experience so far. This flight was delayed a total of 42 hours and diverted to New York before it was finally cancelled. It was delayed 4 and a half hours in London. As we were scanning our boarding passes at the gate they advised that the flight was being diverted to JFK since the delays caused us to missed the open hours for Charlotte international customs and immigration. We were assured multiple times by airport personnel, flight attendants, and the Pilot that we would land at JFK go through customs and immigration and then reboard the plane to fly to Charlotte in the same night. When we landed in New York the pilot advised us as we were retrieving our carry on luggage that we were delayed till 10am the next morning and to see guest services to get a room for the night. During this time I had to purchase a room for a family member in Charlotte which drove over 4 and a half hours to pick us up from Charlotte. This could have been avoided if American Airlines had been up front about the delay. Then after standing in line for over 2 and a half hours at guest services we were taken by taxi to a hotel 30 minutes out of the way. Luckily I looked for other flights that night and found one at 8 am to get on. The initial flight which we were scheduled to fly to charlotte in was delayed 12 more times and was finally cancelled 42 hours after it was supposed to land. I am unaware of what happened to the guest that were supposed to fly on the flight after we were placed on another flight but 42 hours in delays for a direct flight is absolutely ridiculous.

Book cheap flights from Portugal to San Francisco

Recent round-trip flight deals

 
These are the cheapest round-trip flights to San Francisco found on KAYAK in the last 72 hours.
9/19Thu
1 stopIberia
16h 05mLIS-SFO
10/22Tue
1 stopIberia
17h 20mSFO-LIS
$634
9/19Thu
1 stopIberia
16h 05mLIS-SFO
10/17Thu
1 stopIberia
17h 15mSFO-LIS
$644
9/19Thu
2 stopsDelta
20h 45mLIS-SFO
10/19Sat
1 stopDelta
13h 45mSFO-LIS
$671
9/19Thu
2 stopsDelta
20h 45mLIS-SFO
10/19Sat
2 stopsDelta
20h 05mSFO-LIS
$674
7/11Thu
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
7/18Thu
nonstopTAP AIR PORTUGAL
11h 05mSFO-LIS
$695
9/27Fri
2 stopsAmerican Airlines
24h 40mLIS-SFO
9/29Sun
1 stopAmerican Airlines
23h 45mSFO-LIS
$703
10/6Sun
1 stopBritish Airways
26h 30mLIS-SFO
10/12Sat
2 stopsBritish Airways
36h 35mSFO-LIS
$709
9/9Mon
2 stopsAmerican Airlines
36h 30mOPO-SFO
9/16Mon
2 stopsAmerican Airlines
20h 25mSFO-OPO
$715
10/20Sun
1 stopTAP AIR PORTUGAL
17h 30mOPO-SFO
10/26Sat
1 stopTAP AIR PORTUGAL
16h 20mSFO-OPO
$745
10/20Sun
1 stopBritish Airways
28h 00mLIS-SFO
10/26Sat
1 stopBritish Airways
19h 20mSFO-LIS
$760

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to San Francisco found on KAYAK in the last 72 hours.
10/3Thu
2 stops
47h 43mLIS-SFO
$241
9/18Wed
2 stops
33h 18mLIS-SFO
$251
9/25Wed
2 stopsTAP AIR PORTUGAL
26h 50mOPO-SFO
$410
8/19Mon
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
$499
9/4Wed
2 stopsBritish Airways
21h 39mOPO-SFO
$588
10/20Sun
1 stopBritish Airways
26h 30mLIS-SFO
$594
11/22Fri
2 stopsAmerican Airlines
25h 39mLIS-SFO
$600
9/20Fri
2 stopsAmerican Airlines
21h 14mLIS-SFO
$603
8/30Fri
2 stopsDelta
37h 00mFNC-SFO
$1,442
8/30Fri
1 stopDelta
32h 30mFNC-SFO
$1,450

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Last minute flights to San Francisco

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 to San Francisco that are departing in the next 10 days.
6/14Fri
multi-stop
27h 55mLIS-SFO
7/20Sat
nonstop
11h 05mSFO-LIS
$631
6/14Fri
multi-stop
27h 55mLIS-SFO
7/16Tue
multi-stop
28h 40mSFO-LIS
$651
6/14Fri
multi-stop
27h 55mLIS-SFO
7/16Tue
multi-stop
25h 40mSFO-LIS
$674
6/13Thu
multi-stopAmerican Airlines
15h 45mLIS-SFO
6/17Mon
multi-stopAmerican Airlines
19h 45mSFO-LIS
$801
6/13Thu
multi-stopAmerican Airlines
19h 13mLIS-SFO
6/17Mon
multi-stopAmerican Airlines
15h 42mSFO-LIS
$811
6/17Mon
multi-stopBritish Airways
19h 29mLIS-SFO
7/17Wed
multi-stopBritish Airways
15h 35mSFO-LIS
$939
6/17Mon
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
7/15Mon
nonstopTAP AIR PORTUGAL
11h 05mSFO-LIS
$1,025
6/13Thu
multi-stopBritish Airways
26h 30mLIS-SFO
6/26Wed
multi-stopBritish Airways
22h 40mSFO-LIS
$1,041
6/14Fri
nonstopTAP AIR PORTUGAL
12h 40mLIS-SFO
7/18Thu
nonstopTAP AIR PORTUGAL
11h 05mSFO-LIS
$1,081
6/14Fri
multi-stopDelta
20h 53mLIS-SFO
6/18Tue
multi-stopDelta
21h 27mSFO-LIS
$1,370

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Flights to San Francisco

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Portugal

Cabin classes:

$2,512
$2,409
$609