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$396+ Cheap flights from Sofia (SOF) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — WAS
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheap flight deals from Sofia to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$516
(KLM)

One-way from

$396
(Mytrip)

Popular in

July

Cheapest in

June

Average price

$651
Provider with most accurate pricing for Sofia-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Sofia-Washington, D.C. (WAS) flights.
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From Sofia to Washington, D.C. (WAS)
Search Deals
One-way flight from Sofia to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 3% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Sofia to Washington, D.C.

Cheapest flights from Sofia to Washington, D.C.
Explore the most affordable flight options available from Sofia to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSOF - IAD
1 stop16h 05mMultiple Airlines
Tue 1/136:50 pmIAD - SOF
1 stop12h 05mMultiple Airlines
Deal found 11/13$516
This KLM deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/217:00 amSOF - IAD
1 stop16h 05mMultiple Airlines
Thu 12/46:50 pmIAD - SOF
1 stop12h 05mMultiple Airlines
Deal found 11/11$517
This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSOF - IAD
1 stop16h 05mKLM
Thu 1/156:05 pmIAD - SOF
1 stop13h 00mKLM
Deal found 11/13$522
This Air France deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:10 amSOF - IAD
1 stop16h 25mAir France
Thu 12/46:50 pmIAD - SOF
1 stop12h 05mAir France
Deal found 11/11$523
This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSOF - IAD
1 stop16h 05mKLM
Wed 1/142:25 pmIAD - SOF
2 stops16h 40mKLM
Deal found 11/13$526
This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amSOF - IAD
2 stops18h 26mKLM
Wed 12/106:05 pmIAD - SOF
1 stop13h 00mKLM
Deal found 11/13$532
This Air France deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:10 amSOF - IAD
1 stop16h 25mMultiple Airlines
Thu 12/412:30 pmIAD - SOF
2 stops18h 35mMultiple Airlines
Deal found 11/11$533
This KLM deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amSOF - DCA
2 stops18h 03mKLM
Thu 1/83:10 pmDCA - SOF
2 stops15h 55mKLM
Deal found 11/11$536
This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:00 amSOF - DCA
2 stops17h 05mKLM
Wed 1/142:35 pmDCA - SOF
2 stops16h 30mKLM
Deal found 11/13$537
This KLM deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amSOF - IAD
1 stop16h 05mMultiple Airlines
Wed 1/76:50 pmIAD - SOF
1 stop12h 15mMultiple Airlines
Deal found 11/11$557
This KLM deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amSOF - IAD
1 stop16h 05mKLM
Thu 1/86:05 pmIAD - SOF
1 stop13h 00mKLM
Deal found 11/11$563
This KLM deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:00 amSOF - BWI
2 stops18h 22mMultiple Airlines
Wed 12/102:41 pmBWI - SOF
2 stops16h 24mMultiple Airlines
Deal found 11/13$572

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Sofia to Washington, D.C. that are best for you.

Fly from

Sofia

Fly to

Washington, D.C.

Route

Depart

Return

Price

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Wed 4/15

7:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 4/22

5:50 pm-2:00 pm

1 stop13h 10m

$520

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 12/11

7:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Thu 1/15

6:05 pm-2:05 pm

1 stop13h 00m

$522

SofiaWashington, D.C.

SOF - IAD

SOFIAD

Sofia

Thu 11/27

7:00 am-6:26 pm

2 stops18h 26m

Washington, D.C. Dulles Intl

Wed 12/10

6:05 pm-2:05 pm

1 stop13h 00m

$532

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Wed 4/15

7:00 am-4:29 pm

2 stops16h 29m

Washington, D.C. Reagan-National

Wed 4/22

5:00 pm-2:00 pm

2 stops14h 00m

$535

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Wed 12/10

7:00 am-5:59 pm

2 stops17h 59m

Washington, D.C. Reagan-National

Thu 1/8

3:10 pm-2:05 pm

2 stops15h 55m

$536

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Tue 12/9

7:00 am-5:05 pm

2 stops17h 05m

Washington, D.C. Reagan-National

Thu 1/8

3:10 pm-2:05 pm

2 stops15h 55m

$536

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Thu 12/4

7:00 am-6:03 pm

2 stops18h 03m

Washington, D.C. Reagan-National

Thu 1/8

3:10 pm-2:05 pm

2 stops15h 55m

$536

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Tue 12/9

7:00 am-5:05 pm

2 stops17h 05m

Washington, D.C. Reagan-National

Wed 1/14

2:35 pm-2:05 pm

2 stops16h 30m

$537

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Tue 12/9

7:00 am-5:05 pm

2 stops17h 05m

Washington, D.C. Reagan-National

Tue 1/13

2:35 pm-2:05 pm

2 stops16h 30m

$537

SofiaWashington, D.C.

SOF - DCA

SOFDCA

Sofia

Wed 12/10

7:00 am-5:05 pm

2 stops17h 05m

Washington, D.C. Reagan-National

Tue 1/13

2:35 pm-2:05 pm

2 stops16h 30m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 55 results
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Compare providers for flights from Sofia to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sofia to Washington, D.C. in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sofia-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sofia-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Sofia-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sofia to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Sofia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Sofia to Washington, D.C.?

Currently, October is the cheapest month in which you can book a flight from Sofia to Washington, D.C. (average of $487). Flying from Sofia to Washington, D.C. in December is currently the most expensive (average of $624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SOF to WAS?

Find hourly flight availability from Sofia to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

When flying from Sofia to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 21% versus a flight in the evening.

What’s the top layover airport for flights from Sofia to Washington, D.C.?

Share of 1-stop round-trip flights from Sofia to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Amsterdam (AMS) – chosen by Cheapflights users on 75% of 1-stop itineraries from Sofia to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from Sofia to Washington, D.C.?

Average round-trip fare for 1-stop flights from Sofia to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Amsterdam (AMS) is the most affordable 1-stop option, with an average round-trip price of $612.

What’s the fastest layover option from Sofia to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from Sofia to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Amsterdam (AMS) have the shortest average one-way travel time for 1-stop routes: 15h 45m.

Which airport typically offers the quickest layover for flights from Sofia to Washington, D.C.?

Average layover duration for 1-stop one-way flights from Sofia to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average layover time of 3h 38m.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated November 13, 2025.
Get a feel of what it's like to fly with KLM, Austrian Airlines, and United Airlines from Sofia to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,411 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Austrian Airlines
7.6
Good
868 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
United Airlines
7.4
Good
9,017 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Turkish Airlines
7.3
Good
4,043 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,572 reviews
KLM
7.7
Good
1,411 reviews

Comfort

7.7

Overall

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Sofia to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sofia to Washington, D.C.?

    If you book a flight to Washington, D.C. from Sofia, you will be flying from Sofia, which is the city’s only airport. Sofia (SOF) is located 4.2 mi from the center of Sofia. There are 0 flights from Sofia to Washington, D.C. per day from 4 different airlines.

  • How long is the flight from Sofia to Washington, D.C.?

    For as low as $520, KLM can have you in Washington, D.C. from Sofia in 15h 35m. Airlines will cover a distance of 4931 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Sofia to Washington, D.C. round-trip?

    KLM, at $520, was found to be the cheapest airline from Sofia to Washington, D.C..Alternate airlines to your destination round-trip include Lufthansa and United Airlines. These flights start at 21% lower than the current average price 3 months from now.

  • What are the most popular routes from Sofia to Washington, D.C.?

    The most popular flight routes from Sofia to Washington, D.C. are Sofia - Washington, D.C. Dulles Intl, Sofia - Washington, D.C. Reagan-National and Sofia - Baltimore/Washington.

  • Can I find deals for flights from Sofia to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Sofia to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sofia to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sofia to Washington, D.C..

  • Can I find deals for business class flights from Sofia to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Sofia to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, October is the cheapest month in which you can book a flight from Sofia to Washington, D.C. (average of $487). Flying from Sofia to Washington, D.C. in December is currently the most expensive (average of $624). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sofia to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to Dulles Intl flights

Top 4 airlines flying from Sofia to Washington, D.C.

Discover the top 4 airlines that operate flights from Sofia to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$520Average$601FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$572Average$650FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$588Average$641FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$621Average$687FlexibilityNo cancel feeOn-time77%

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