SOF - IAD

$493 Find Cheap Flights from Sofia to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sofia to Dulles Intl departing on 11/11. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sofia to Washington, D.C., 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 Sofia to Washington, D.C., as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$553
Typical prices: $657-$847
Multiple Airlines
Tue 11/11Tue 12/9
SOF - IAD • 1 stop
Cheapest one-way
$493
Multiple Airlines
Tue 11/11
SOF - IAD • 3 stops
Top airlines
KLM
Cheapest • from $558 (round-trip)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 12% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Dulles Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Sofia to Dulles Intl (SOF-IAD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sofia to Dulles Intl 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sofia to Dulles Intl

Tue, Nov 11 - Tue, Dec 9
Multiple Airlines Logo
7:00 am - 4:05 pmSOF-IAD
16h 05m1 stop
Multiple Airlines Logo
6:50 pm - 1:55 pmIAD-SOF
12h 05m1 stop
$553Multiple Airlines
Find Deal
Mon, Nov 10 - Sun, Nov 23
KLM Logo
7:00 am - 4:05 pmSOF-IAD
16h 05m1 stop
KLM Logo
6:05 pm - 2:05 pmIAD-SOF
13h 00m1 stop
$558KLM
Find Deal
Fri, Dec 19 - Fri, Jan 16
Air France Logo
7:00 am - 4:35 pmSOF-IAD
16h 35m1 stop
Air France Logo
6:50 pm - 1:55 pmIAD-SOF
12h 05m1 stop
$559Air France
Find Deal
Wed, Nov 12 - Wed, Dec 10
Turkish Airlines Logo
4:00 pm - 7:20 pmSOF-IAD
34h 20m1 stop
Turkish Airlines Logo
1:30 pm - 8:50 pmIAD-SOF
24h 20m1 stop
$640Turkish Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Turkish Airlines Logo
9:40 pm - 11:45 amSOF-IAD
21h 05m1 stop
Turkish Airlines Logo
1:30 pm - 8:45 amIAD-SOF
12h 15m1 stop
$641Turkish Airlines
Find Deal
Tue, Nov 11 - Thu, Dec 11
Lufthansa Logo
6:00 am - 3:50 pmSOF-IAD
16h 50m1 stop
Lufthansa Logo
5:40 pm - 1:15 pmIAD-SOF
12h 35m1 stop
$644Lufthansa
Find Deal
Mon, Dec 22 - Thu, Jan 15
Air France Logo
7:00 am - 7:15 pmSOF-IAD
19h 15m1 stop
Air France Logo
6:50 pm - 1:55 pmIAD-SOF
12h 05m1 stop
$646Air France
Find Deal
Tue, Nov 11 - Thu, Dec 11
Lufthansa Logo
6:05 am - 3:50 pmSOF-IAD
16h 45m2 stops
Lufthansa Logo
5:40 pm - 1:15 pmIAD-SOF
12h 35m1 stop
$652Lufthansa
Find Deal
Mon, Nov 10 - Mon, Dec 8
United Airlines Logo
2:20 pm - 8:15 pmSOF-IAD
12h 55m1 stop
United Airlines Logo
10:55 pm - 10:45 pmIAD-SOF
16h 50m1 stop
$659United Airlines
Find Deal
Sun, Nov 9 - Tue, Dec 9
United Airlines Logo
6:10 am - 3:50 pmSOF-IAD
16h 40m1 stop
United Airlines Logo
10:00 pm - 10:45 pmIAD-SOF
17h 45m1 stop
$661United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Sofia to Dulles Intl flights

Get data-powered insights and trends into flights from Sofia to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Sofia to Washington, D.C. Dulles Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Sofia to Washington, D.C. Dulles Intl Airport departing in November.

What’s the cheapest day of the week to fly from Sofia to Washington Dulles Airport?

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

If your flying dates are flexible, you should consider flying to Washington Dulles Airport on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Sofia to Washington Dulles Airport. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sofia to Washington, D.C. Dulles Intl Airport, 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 Sofia to Washington, D.C. Dulles Intl Airport is February, where tickets cost $580 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $920 and $677 respectively.

Good to know

Low seasonJune
Cheapest flight$493
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Sofia to Washington Dulles Airport

When to book flights from Sofia to Dulles Intl

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

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

    In the last 3 days, the lowest price for a flight from Sofia to Washington, D.C. Dulles Intl Airport was $493 for a one-way ticket and $553 for a round-trip.

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

    A passport is required to fly from Sofia to Washington Dulles Airport.

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

    Sofia airport is called Sofia and the only airport in Washington Dulles Airport is Washington, D.C. Dulles Intl.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Sofia to Washington, D.C. are KLM and United Airlines. With an average price for the route of $601 and an overall rating of 7.7, KLM is the most popular choice. United Airlines is also a great choice for the route, with an average price of $641 and an overall rating of 7.4.

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

    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 Sofia to Washington Dulles Airport.

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

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

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

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

Reviews of the top 4 airlines serving from Sofia to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Sofia to Washington, D.C.. 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 Sofia to Dulles Intl? 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.
7.7
KLMOverall score based on 1406 reviews
7.8Boarding
7.3Food
8.4Crew
7.1Entertainment
7.7Comfort
Airline reviews

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

2.0 MediocreElizabeth, Oct 2025CDG - AMS
Read more KLM reviews

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

The best airline for international travel in terms of value you get in business class (service/cost)

I liked the overall flight experience. However, Turkish officials could do a better job at guiding non-Turkish speakers to their connecting flight gates in such a huge & vast airport.

Very small and cramped aisles and seats. Food was poor but the fresh hot roll and hummus was good. No cans of soda given but they had small bottles of water. Crew was nice and pleasant and kept bathroom clean.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Small seat space for 13 hours flight, they charged for baggage , very bad quality of food,

I was sitting almost in the back, the seats are very tight and there’s no legroom, it’s uncomfortable for a long distance

Absolute worst airline. Charged us $720 to check 4 bags (2 of which were carry-on). Entertainment systems didnt work. And on a 12 hour flight they served 2 meals and never once came around outside of those 2 meals with a beverage or cup of water. Will never fly them again.

Took forever to board. They made announcements without the loudspeaker and since the waiting room was full of screaming kids, no one could hear what they were saying. The business class sleeper seats were designed for tall skinny people. When partially reclined there was nowhere to rest my feet because they did not reach the footrest. and when fully reclined there wasn't room at my sides for my arms. Definitely one of the worst sleeper seats I have ever had.

About an hour delay but we made it to Chicago. I feel that the smaller connecting flights are the ones that cause the delays on the bigger planes that fly international.

We left 1.5 hours late therefore missing my connection. The airline didn’t give vouchers.

Food could have something without dairy, I couldn't eat anything. Tv for both seats was malfunctioning. They have one bottle of ginger ale for entire plane.... and I paid extra for these seats...very disappointed

We took two long flights with Lufthansa, both were delayed making us miss our connecting flights. Lufthansa took care of the first one. The second was a switch to United and figuring out how to rebook was not a pleasant experience.

Welp - they boarded us appropriately...then had us sit on the plane for over two hours before cancelling the flight...which meant another night in Munich. I probably had it a little better than most as over 500 people had to be accommodated/re-booked etc. The next day I boarded the same flight (for which I had now been ticketed 3 straight days) and - with "only" an hour delay, managed to finally get home over 2 days later than scheduled. I haven't flown Lufthansa to Europe in years...and I won't be looking to do so again in the future. To be clear, though, the people I interacted with - flight crew, Service Center, check-in were all professional and courteous - management is clearly to blame for their lack of communication and unpreparedness for when things go wrong.

Seat very cramped, could not recline. No cheese with meal. Staff very helpful.

The flight from Dulles to Munich was just okay. The seats were comfortable and extra foot room was noticeable in comfort plus. Disappointed in the booking in so much I requested an aisle seat and then was assigned a middle seat. The food was inedible. Movie choices were moderate. I usually fly Delta, but this WA flight was cheaper. Next time, I'll happily pay the extra to fly Delta.

Food was terrible. They ran out of options and gave me a bland undercooked pasta and veggies. Only middle seat was available to select although I paid extra. Baggage delayed at destination. Flight attendants not really helpful.

One one boarding scanner was working to scan 400+ passengers to an Airbus 380. Food in premium economy was mediocre.

Liked the flight being almost on time (airport issues created a delay). Disliked the issue printing tag bags on the kiosk and having to wait for an hour on like to drop my bags.

The flight crew was friendly and accommodating. I witnessed one of the flight attendants deal with a difficult flyer with extreme calm and compassion. I was so annoyed with the passenger and so impressed by the flight attendant. His quick action de-escalated what could have been a major incident. He was awesome.

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