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IAD - SOF

$338 Find cheap flights from Washington Dulles Airport to Sofia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Sofia departing on 8/6. 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
Tue 7/2
Tue 7/9

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sofia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sofia.
In the last 7 days travelers have searched 41,909,192 times on KAYAK, and here is why:

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Cheap flight deals from Dulles Intl to Sofia (IAD-SOF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Sofia 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
6:49 am - 2:10 pmIAD-SOF
25h 21m2 stops
6:05 pm - 3:40 pmSOF-IAD
28h 35m1 stop
$598American Airlines
Find Deal
Tue, Oct 29 - Tue, Nov 12
3:45 pm - 1:00 pmIAD-SOF
15h 15m2 stops
6:00 am - 9:19 pmSOF-IAD
22h 19m2 stops
Tue, Oct 29 - Tue, Nov 12
6:30 pm - 11:00 pmIAD-SOF
21h 30m2 stops
6:05 am - 4:55 pmSOF-IAD
16h 50m1 stop
$610United Airlines
Find Deal
Wed, Oct 16 - Fri, Nov 1
6:50 pm - 1:30 pmIAD-SOF
12h 40m1 stop
6:55 pm - 8:05 pmSOF-IAD
32h 10m1 stop
$611Lufthansa
Find Deal
Tue, Oct 29 - Tue, Nov 12
10:15 pm - 6:05 pmIAD-SOF
12h 50m1 stop
6:05 am - 4:55 pmSOF-IAD
16h 50m1 stop
$612United Airlines
Find Deal
Wed, Oct 16 - Fri, Nov 1
4:40 pm - 8:20 pmIAD-SOF
20h 40m1 stop
9:20 am - 2:45 pmSOF-IAD
36h 25m1 stop
$616Turkish Airlines
Find Deal
Tue, Sep 24 - Tue, Oct 8
12:45 pm - 8:50 pmIAD-SOF
25h 05m1 stop
3:55 pm - 11:00 amSOF-IAD
26h 05m1 stop
$646Turkish Airlines
Find Deal
Thu, Nov 28 - Thu, Dec 12
5:50 pm - 10:25 pmIAD-SOF
21h 35m1 stop
6:00 am - 3:50 pmSOF-IAD
16h 50m1 stop
$649Lufthansa
Find Deal
Fri, Nov 29 - Fri, Dec 13
5:35 pm - 6:00 pmIAD-SOF
17h 25m1 stop
4:05 pm - 2:35 pmSOF-IAD
29h 30m1 stop
$876Austrian Airlines
Find Deal
Sun, Aug 18 - Sat, Aug 24
5:34 pm - 3:20 pmIAD-SOF
38h 46m2 stops
4:05 pm - 2:35 pmSOF-IAD
29h 30m1 stop
$915Austrian Airlines
Find Deal
Sat, Aug 31 - Sat, Sep 14

Flights from Dulles Intl to Sofia - Travel Insights & Trends

Get data-powered insights and trends into flights from Dulles Intl to Sofia 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 Washington Dulles Airport to Sofia?

The average price of all flights from Washington, D.C. Dulles Intl Airport to Sofia clicked on KAYAK for each day over the last 12 months.
When flying from Washington Dulles Airport to Sofia, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Fridays.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sofia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Washington, D.C. Dulles Intl Airport to Sofia, 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 Washington, D.C. Dulles Intl Airport to Sofia is November, where tickets cost $741 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,359 and $1,200 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Sofia?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Washington, D.C. Dulles Intl Airport to Sofia, 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 Washington, D.C. Dulles Intl Airport to Sofia, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 22 days before departure.

Which airlines provide the cheapest flights from Washington Dulles Airport to Sofia?

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 Sofia from Washington Dulles Airport were found on Turkish Airlines ($431) and TAP AIR PORTUGAL ($603), and the lowest round-trip tickets were found on American Airlines ($598) and United Airlines ($610).

Good to know

Low season

February

High season

July

Cheapest flight

$338
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Washington Dulles Airport to Sofia

When to book flights from Dulles Intl to Sofia

Are your dates flexible? Find out the best times to travel from Dulles Intl to Sofia 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 Washington Dulles Airport to Sofia flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Sofia?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Sofia was $338 for a one-way ticket and $598 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Sofia?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Sofia.

  • Which airports will I be using when flying from Washington Dulles Airport to Sofia?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Sofia, also known as Sofia.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Sofia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Sofia?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Sofia, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Sofia, SWISS or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Sofia are SWISS and Austrian Airlines. With an average price for the route of $1,108 and an overall rating of 7.7, SWISS is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of $1,031 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Sofia?

    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 Washington Dulles Airport to Sofia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Sofia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Washington Dulles Airport 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 Washington Dulles Airport to Sofia?

    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 Sofia with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SOF 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 Washington Dulles Airport to Sofia?

    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 Sofia from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Dulles Intl to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Sofia. 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 Dulles Intl to Sofia? 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.
7.5
Austrian AirlinesOverall score based on 1016 reviews
8.1Crew
7.4Comfort
6.8Food
7.6Boarding
6.8Entertainment
Airline reviews

No delays, helpful staff, well organised. The check in and boarding procedures ran smoothly. The only thing that put me off is that the meal had spicy peppers in. I would have appreciated at least a warning (if i couldn't have a choice) so as to simply not eat them because they were too spicy.

8.0 ExcellentAnonymous, May 2024ORD - VIE
Read more about Austrian Airlines reviews

No delays, helpful staff, well organised. The check in and boarding procedures ran smoothly. The only thing that put me off is that the meal had spicy peppers in. I would have appreciated at least a warning (if i couldn't have a choice) so as to simply not eat them because they were too spicy.

The crew was attentive but not intrusive, and was always kind in every interaction.

Austrian was not the issue. Kayak was terrible The flight was canceled. Frustrating but it can happen. The worst was Kayak's customer support around re-booking. I have chatted with a bot, than with a person who insisted the flight was still on as originally booked. while chatting i went on Austrian web page and told the kayak chat lady that the flight is shown as cancelled. She said she will escalate this and that someone will contact me within the hour. When I have asked her to give me the details of the flight she sees, She gave me the general A to B and return B to A. Totally unhelpful. After two hours I contacted them again, They were still saying the original flight is as scheduled and when I explained again I was told I will be contacted within 2-6 hours. NO ONE CONTACTED ME EVER SINCE! I have than contacted Austrian directly and was rebooked on a difficult flight. Kayak continued to send me irrelevant updates about my original flight. Terrible customer service at time of need.

From all the segments I flew it was the only one I did not get the option to choose ni seat, I did not get the quality of seat I had paid for. Crew was nice, airplane was clean, but no food, only water and a small courtesy chocolate. Everything else you had to pay for.

Austrian airline they cancel my fight , and the couldn’t give me flight , they said only available flight 4th and after , I sacked for refund, even from you KYAK , and tell now no any refund , because what happened I lost more money because I have to stay in hotel and then I buy new ticket

Management and staff att viena wasn’t professional,and they are not good by how to communicate and solve the problem, I was shocked , as I know Austrian airlines was amusing Thank you

The baggage arrived damaged and i spent EUR 300 on the baggage a month ago. No responsibility from airline or the handles.

Tight connection from Austrian Airlines made this challenging. Our luggage did not make it, delivered the next day at noon. Flight itself was very full, not especially comfortable.

The flight was late. We accommodated other missed flights, and the plane was full of people, without space to store carry-on luggage. They lost our checked luggage for the entire flight and delivered it after two days.

Premium Economy is good value in comparison to Business Class. Not all the perks of Business but a lot of leg room and wider seat and elbow room. Food was very good. I even asked for a Gruner Veltliner wine which was not on the trolley and the attendant went into Business/First to get me a glass. Nice little touch. I would like to have a wider selection of music -- more 70's-80's (guess how old I am).

Overnight flight in the old style Business class, but still very good.

I was in business class, without the business class amenities. Large seat with lots of legroom, but no TV or bed. Food was okay, but I did enjoy the Turkish red wine.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

On line check in needs a lot of improvement. I tried and gave up.

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

I flew Delta last week and United Airlines is a poor substitute mechanical problems with the plane and shitty food among other things made my travel experience what’s become to be expected from United no way is it ever worth the money they make us pay

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Food was terrible Not many options Stewards dont care Delay

The ride was good but no food ot entertainment hence, it was just over an hour flight.

they made me check my carryon. There was space in the overhead bins.

The plane was delayed 2 hours. The wifi did not work. The seat in first class was not comfortable because the bottom felt like it lost all of its padding. And I did not like when the flight attendant made me wait at my seat to use the bathroom and didn't tell me why. If there were too many people using the 1st Class bathroom, she should have told me to go in the back, coach bathrooms. I guess I have to feel fortunate that they found 2 local pilots to still fly the plane tonight after the original pilots ended up at an airport 60 miles away due to high winds.

The crew were really great, but the 4 hour delay in small chunks was the worst.

Every experience was good except for the lack of comfort in those economy seats. I never had knee pain until that flight. Those seats are uncomfortable.

I bought internet for the flight. Don’t waste your money. I wasn’t able to download a 1 Mb file from Google Docs during a 3-4 hr period. You can only use WhatsApp and email if you are willing to wait.

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.

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Boston Logan is a crummy airport - signage is terrible or lacking in areas. Boarding seemed to be a free for all and with all the different airlines speaking, you couldn't tell who was supposed to be where and when. Plain and simple, airlines should board from the back of the plane to the front. Also someone was sitting in my seat. By the time that was figured out, I had to place my overhead behind me which made de-planing more difficult. Logan is not Lufthansa's fault so that is not on them, Boarding is on them! Still, overall it was a Good Experience flying with Lufthansa. This is not my first flight with them...

Overall, the flight was comfortable without any serious issues. Transit through Frankfurt airport was a little confusing, but not too difficult if you follow the signs

There was a screaming child behind our seats. This prevented us from getting any sleep during the night.

There was a screaming child just behind our seats. This prevented us from getting any sleep during the night!!

Staff disappeared after dinner service until breakfast, no help with beds, no help running to our gate to catch connection cause flight was late, our luggage didn’t make it, took over 24 hours to get luggage to hotel, no compensation!!

Everything was good except food. I believe there is room for improvement

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

Very bed boarding, there was overbooked and make a lot of problems and noises

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

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

Book cheap flights from Washington, D.C. to Sofia

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Washington, D.C. to Sofia found on KAYAK in the last 72 hours.
8/6Tue
2 stops
30h 00mIAD-SOF
$338
8/5Mon
2 stops
29h 40mIAD-SOF
$340
8/6Tue
3 stops
29h 15mIAD-SOF
$346
8/5Mon
1 stopTurkish Airlines
15h 30mIAD-SOF
$431
8/6Tue
1 stopTurkish Airlines
15h 15mIAD-SOF
$455
10/17Thu
2 stopsTAP AIR PORTUGAL
17h 40mIAD-SOF
$603
8/3Sat
2 stopsTAP AIR PORTUGAL
22h 25mIAD-SOF
$751
8/2Fri
2 stopsSWISS
15h 00mIAD-SOF
$896
6/22Sat
1 stopLufthansa
17h 40mIAD-SOF
$935
6/22Sat
2 stopsLufthansa
17h 15mIAD-SOF
$954

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Washington Dulles Airport - Sofia Flights

Departure:

Washington Dulles Airport (IAD)United States

Destination:

Sofia (SOF)Bulgaria

Return flight deals:

Sofia - Washington Dulles Airport

Cabin classes:

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