WAS - SOF

$419 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Sofia departing on 6/4. 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.
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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.
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Cheap Flights from Washington, D.C. to Sofia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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.

Recent round-trip flight deals from Washington, D.C. to Sofia

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Sofia.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
2:06 pm - 5:05 pmIAD-SOF
20h 59m2 stops
American Airlines Logo
5:25 pm - 7:45 pmSOF-IAD
33h 20m1 stop
$559American Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
American Airlines Logo
6:05 pm - 5:05 pmIAD-SOF
17h 00m2 stops
American Airlines Logo
5:25 pm - 4:00 pmSOF-IAD
29h 35m2 stops
$569American Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Turkish Airlines Logo
9:40 pm - 2:45 pmIAD-SOF
34h 05m1 stop
Turkish Airlines Logo
9:25 am - 7:45 pmSOF-IAD
17h 20m1 stop
$639Turkish Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 21
Turkish Airlines Logo
9:40 pm - 8:25 pmIAD-SOF
15h 45m1 stop
Turkish Airlines Logo
9:15 pm - 11:45 amSOF-IAD
21h 30m1 stop
$643Turkish Airlines
Find Deal
Thu, Aug 21 - Fri, Sep 12
United Airlines Logo
6:40 pm - 6:10 pmIAD-SOF
17h 30m1 stop
United Airlines Logo
6:00 am - 7:39 pmSOF-IAD
20h 39m2 stops
$689United Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 9
Lufthansa Logo
10:20 pm - 11:00 pmIAD-SOF
17h 40m1 stop
Lufthansa Logo
6:20 am - 1:30 pmSOF-IAD
14h 10m1 stop
$713Lufthansa
Find Deal
Fri, Aug 1 - Sun, Aug 24
United Airlines Logo
5:40 pm - 12:00 pmIAD-SOF
11h 20m1 stop
United Airlines Logo
6:20 am - 9:05 pmSOF-IAD
21h 45m2 stops
$724United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 21
Lufthansa Logo
5:16 pm - 6:40 pmIAD-SOF
18h 24m2 stops
Lufthansa Logo
12:45 pm - 7:25 pmSOF-IAD
13h 40m1 stop
$739Lufthansa
Find Deal
Wed, Aug 20 - Fri, Sep 12
ITA Airways Logo
6:04 am - 12:00 pmDCA-SOF
22h 56m2 stops
ITA Airways Logo
12:55 pm - 11:36 pmSOF-DCA
17h 41m2 stops
$894ITA Airways
Find Deal
Sun, Jul 13 - Wed, Jul 23
ITA Airways Logo
12:12 pm - 12:05 pmIAD-SOF
16h 53m2 stops
ITA Airways Logo
12:55 pm - 12:02 pmSOF-IAD
30h 07m2 stops
$900ITA Airways
Find Deal
Tue, Jul 15 - Wed, Jul 23
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KAYAK's insights & trends for Washington, D.C. to Sofia flights

Get data-powered insights and trends into flights from Washington, D.C. 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, D.C. to Sofia?

The average price of all round-trip flights from Washington, D.C. to Sofia clicked on KAYAK for each day over the last 12 months.

When flying from Washington, D.C. to Sofia, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to Washington, D.C., 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. to Sofia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. 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. to Sofia is November, where tickets cost $593 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,143 and $1,088 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Sofia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Sofia, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonFebruary
High seasonJuly
Cheapest flight$419
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Baltimore to Sofia

When to book flights from Washington, D.C. to Sofia

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Sofia

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Sofia was $419 for a one-way ticket and $559 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Sofia?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Sofia?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Sofia. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Sofia.

  • Which aircraft models fly most regularly from Washington, D.C. to Sofia?

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

  • Which airline alliances offer flights from Washington, D.C. to Sofia?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington, D.C. 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Sofia are SWISS and United Airlines. With an average price for the route of $937 and an overall rating of 7.5, SWISS is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,052 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Sofia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Washington, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 5 airlines serving from Washington, D.C. 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 Washington, D.C. 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 780 reviews
7.3Comfort
7.6Boarding
6.7Food
8.1Crew
6.7Entertainment
Airline reviews

Not so good. I paid for a preference economic seat, and I couldn’t incline it back because it was blocked. They explained me that because is the last before emergency exit. The company new that but it was not explained in the seat selection

8.0 ExcellentMichael, Apr 2025TLV - VIE
Read more Austrian Airlines reviews

Not so good. I paid for a preference economic seat, and I couldn’t incline it back because it was blocked. They explained me that because is the last before emergency exit. The company new that but it was not explained in the seat selection

It was on time. Snacks could have been provided for free.

Tirana was crazy check in and getting bussed to another gate. Both Germany stops were intensive customs but organized, but that wasn't the airlines problem. The crews were fabulous on the planes. The announcements were not easy to understand in English, slurred speech. Customs inthe US were fast. We waited for luggage, three later arriving planes had their luggage and left before us

Business class old style from 10 years ago. Ok for short flights but nor for 12 hours journey. The passenger near the window have to jump over the passenger seat aisle side or wake him up to upright the seat. That’s not the business class that you expect on long night flight. Seats are not so confortable. And believe it or not no wifi!

We have travelled on 13 December with Austrian Airlines from Yangon through Bangkok and Vienna to Varna. The first flight operated by Thai Airlines was nice and comfortable. I wouldn’t say the same thing about the next two flights which were operated directly by the Austrian Airlines. During our flight from Bangkok to Vienna:  > The service was very poor – serving of food and drinks was disorganized, late and not combined, the stewards were walking back and forth without doing anything substantial for the passengers. Even the morning breakfast was very late with a cup of coffee almost while landing (after a reminding).  > The food itself was OK-ish but for a 12-hour flight, there were no snacks/bites in between dinner and breakfast as it is with the other airlines.  > The cutlery was wooden, most probably recycling, but very unpleasant to eat with.  > The stewards were not rude but not friendly and/or helpful  > And also, half of the passengers had travel sets, others did not. The flight from Vienna to Varna was another surprise: firstly, the flight was late and secondly, they were serving only water free, even the coffee was paid, so were the snacks, but we had to pay to reserve seats. The whole experience is as if it was a low-cost airline. All in all, I wouldn’t recommend using the services of Austrian Airlines: the ticket prizes are quite the same as of the other carriers flying to this destination and you would have much pleasant time.

Friendly staff, always good food , as comfortable as it can be in economy

Business class is not worth it. Not comfortable and old plane with no privacy or enough space unless you on the single seats

We didn’t fly into Neuark , because it departed without us . We ran to a closed gate , and no staff to assist, then to a customer service center that was also closed, then briskly walked (20mins) to another customer center and got a ticket , waited 2 hours , got a flight to JFK instead, because of the time delay we Ran to catch our train home , and again our luggage arrived 3 days later delivery time at 3:45 in the MORNING!!!! Crazy!!!!!! Took a few days to shake off this disappointment of your service. You’re an embarrassment to customer service .

My luggage was lost and I did not receive any compensation

Pleasant up to Vienna. Afterward (Vienna- Zagreb) was an horrific experience

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

Ordered Vegan meal - it was ok, but not exceptional. Seat ok row 39 middle section aisle. Nearly full flight - crew was busy but they did the best they could. There was a USB A port at the seat. I listened to my own music and only looked at flight information. One nice thing was the connection information was made available in the screen.

Very nice and friendly crew. Boarding system can be improved.

The Etickets had been changed (Why?) without notice ; Hence, that caused troubles when checking in. Not until I contacted my ticket agent and was given correct Etickets could I then check in.

Cleanliness of seats, trays, storage pockets need more attention, but everything else was good.

A great airline, no complaints at all. My experience with Cheap Tickets was very disappointing however. Two hours after purchasing the flight they called to tell me that the ticket price had gone up. I’ve never heard of such a thing. That is called false advertising; I will never use this ticketing service again and will warn all friends to never use it.

One of the worst check in process at the DIA as well as the boarding counter Changed seat at the last minute and assigned middle seat while I paid for window seat. Requested many times but to no avail . horrible customer service and very poor process Requesting refund for seat that was changed last minute

Good overall flight. Excellent crew. Food options could be improved.

Vegan food tasted good. Restroom could be kept cleaner. Seat tray table was a bit tilted so food tray kept sliding down a bit. Flight crew can be a little more friendly, caring and approachable. Their faces lacked smiles and tone was stern.

Flight was delayed then we had to redirect for medical emergency during which time we had no information on what is the plan. The connecting flight was also delayed.

Professional & courteous cabin crew. Food was very good even in economy class

We ordered a gluten free meal and never got it!

The seats are horribly uncomfortable. We were in premium economy and paid a premium price yet, the seats were the worst! You could feel every structural bar in the seat, there was no padding, no amenities kit, and the leg rests were broken. Duct tape was holding another seat together. When we arrived at our final destination, Venice, my suitcase was ripped open, and my clothes were about to fall out of the bag. I would’ve been more comfortable if I flew a paper airplane across the Atlantic.

I don't like anything in this flight the food was bad the service was bad the flight was old and not connected to the screen no intertainments at all and it was long trip was bad intertainments the crew not helping

Seats weren’t comfortable. Both of our seat backs were either almost straight vertical or laying back into the laps of the people behind us, which is a weird angle to try to get some sleep even on a plane. No in between. Also, neither seat would spring forward like they should.

The flight was great, smooth and even a little ahead of time.

There wasn't a time for neither food morning entertainment in a short one hour hop over.

Flight on time, flight assistants super nice, business class very comfortable. The whole experience was very good.

It is the worst ever airline. All employees I spoke with over the phone were pompous asses.

The gate information was never populated on the Delta app or the airport displays or the desk at the Delta lounge. We found at the last minute that we had to switch terminals and just made it to our flight. Even this we found accidentally by asking an employee at another gate. On board service was poor. Seats were very poor. All in all a poor experience. At best like a Premium Economy on other airlines

No online or self check in. Sent emails in Italian language. In general, not recommended airline company.

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

We had a 1 1/2 hour delay before we left Denver. When we arrive to Frankfort, they didn’t announce that people with connecting flights to exit the plane first. My next flight was already boarding when we we taxiing in to the gate. I waited another 10 minutes to get off the plane. I had to run to catch my next flight. I mean run! I made it with one minute to spare, but my luggage did not. My luggage came two hours later on a different flight.

My flight was late from US to Frankfurt so I missed my connecting flight flight and I had to wait for long to catch the next flight which was very tiring. Otherwise everyone was very nice.

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Crew was not happy. Very uncomfortable seats. When person leans back in front of you the screen is too close to me. Food was awful.

They lost my luggage and despite all follow ups through emails and phone calls they don’t give me an update

Everything went really well. Snacks could be better and there was no tea/coffee service after dinner. Crew was helpful and friendly.

Everything you need to know for your flight from Washington, D.C. to Sofia

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