Sofia

$278+ Cheap flights from Washington, D.C. (WAS) to Sofia (SOF)

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
Jan 20 — Jan 271
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Find cheap flights from Washington, D.C. to Sofia with Cheapflights

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Cheapflights Tip: The best prices from Washington, D.C. to Sofia are usually found in September or January, booked 47 days in advance, depart on a Wednesday or Sunday and return on a Monday

Cheap flight deals from Washington, D.C. to Sofia

Cheapest flights from Washington, D.C. to Sofia
Explore the most affordable flight options available from Washington, D.C. to Sofia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This SWISS deal was found by Cheapflights users on 12/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mSWISS
Thu 2/54:00 pmSOF - IAD
1 stop30h 30mSWISS
Deal found 12/19$682
This Gurufare deal was found by Cheapflights users on 12/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mMultiple Airlines
Tue 2/36:00 amSOF - IAD
1 stop15h 35mMultiple Airlines
Deal found 12/19$684
This oojo deal was found by Cheapflights users on 12/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:25 pmIAD - SOF
2 stops36h 50mSWISS
Mon 1/123:00 pmSOF - IAD
1 stop32h 40mSWISS
Deal found 12/20$688
This Ovago deal was found by Cheapflights users on 12/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mSWISS
Tue 2/36:00 amSOF - IAD
2 stops17h 24mSWISS
Deal found 12/19$693
This Ovago deal was found by Cheapflights users on 12/19. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mSWISS
Wed 2/42:00 pmSOF - IAD
2 stops16h 18mSWISS
Deal found 12/19$701
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mSWISS
Mon 2/23:00 pmSOF - IAD
2 stops30h 35mSWISS
Deal found 12/19$702
This KAYAK deal was found by Cheapflights users on 12/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mMultiple Airlines
Thu 2/512:35 pmSOF - IAD
1 stop33h 05mMultiple Airlines
Deal found 12/19$705
This United Airlines deal was found by Cheapflights users on 12/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 pmIAD - SOF
1 stop10h 50mUnited Airlines
Fri 2/66:10 amSOF - IAD
2 stops17h 20mUnited Airlines
Deal found 12/19$706
This Cheapflightsfares deal was found by Cheapflights users on 12/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:45 pmIAD - SOF
2 stops35h 05mAustrian Airlines
Mon 1/126:45 pmSOF - IAD
2 stops26h 15mAustrian Airlines
Deal found 12/20$715
This Gurufare deal was found by Cheapflights users on 12/19. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:25 pmIAD - SOF
1 stop14h 50mMultiple Airlines
Sun 2/16:10 amSOF - IAD
1 stop16h 40mMultiple Airlines
Deal found 12/19$717
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:19 pmBWI - SOF
2 stops36h 56mUnited Airlines
Mon 1/122:20 pmSOF - BWI
2 stops38h 01mUnited Airlines
Deal found 12/20$719
This oojo deal was found by Cheapflights users on 12/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:50 pmDCA - SOF
2 stops37h 30mBritish Airways
Sat 1/1012:05 pmSOF - DCA
2 stops16h 53mBritish Airways
Deal found 12/19$1,981

Find flight deals from Washington, D.C. to Sofia

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Sofia (SOF). 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 December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$494
(oojo)

One-way from

$278
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$1,060
Provider with most accurate pricing for Washington, D.C. (WAS)-Sofia flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Sofia flights.
From Washington, D.C. (WAS) to Sofia
One-way flight from Washington, D.C. (WAS) to Sofia
Highest demand for flights based on searches. 5% potential increase in price ($48 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Sofia 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 December 21, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Sofia that are best for you.

Fly from

Washington, D.C.

Fly to

Sofia

Route

Depart

Return

Price

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 4/22

10:25 pm-1:30 pm

1 stop32h 05m

Sofia

Wed 5/6

9:30 pm-3:50 pm

1 stop25h 20m

$494

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 4/22

5:59 pm-1:30 pm

2 stops36h 31m

Sofia

Wed 5/6

9:30 pm-6:55 pm

2 stops28h 25m

$518

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 4/26

1:00 pm-2:00 pm

2 stops18h 00m

Sofia

Thu 4/30

7:00 am-3:35 pm

1 stop15h 35m

$524

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

Fri 3/13

4:00 pm-12:45 pm

1 stop26h 45m

$535

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 2/4

9:15 pm-3:10 pm

1 stop34h 55m

Sofia

Wed 2/11

9:35 am-11:45 am

1 stop33h 10m

$535

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Sun 4/19

9:35 pm-7:10 pm

1 stop14h 35m

Sofia

Sun 5/3

9:10 pm-7:40 pm

1 stop29h 30m

$544

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Mon 3/23

10:30 pm-8:10 pm

2 stops39h 40m

Sofia

Mon 4/6

8:00 pm-10:33 pm

2 stops33h 33m

$548

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 3/10

2:30 pm-8:50 pm

1 stop24h 20m

Sofia

Sat 6/6

3:50 pm-7:50 pm

1 stop35h 00m

$561

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 1/13

1:30 pm-8:45 am

1 stop12h 15m

Sofia

Thu 1/29

9:40 pm-7:20 pm

1 stop28h 40m

$564

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 4/1

9:40 pm-3:00 pm

1 stop34h 20m

Sofia

Thu 4/9

9:05 pm-11:35 am

1 stop21h 30m

$565

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 47 results
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Compare providers for flights from Washington, D.C. to Sofia

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 Washington, D.C. to Sofia in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*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 Washington, D.C.-Sofia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Sofia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Sofia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Sofia 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 Washington, D.C.-Sofia 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 Washington, D.C. to Sofia

Have a flexible travel schedule? Discover the best time to fly to Sofia from Washington, D.C. 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 Washington, D.C. to Sofia

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Sofia. Price data was last updated on December 12, 2025.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to Sofia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $551). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $822). 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 WAS to SOF?

Find hourly flight availability from Washington, D.C. to Sofia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 21, 2025.

One of the essential ways to save on airfare from Washington, D.C. to Sofia is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

How much does it cost to fly round-trip from Washington, D.C. to Sofia?

Reviews of airlines servicing Sofia

Get insights into the airlines that provide service to Sofia. 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 Sofia. Reviews last updated December 21, 2025.
Read reviews from past customers who have flown Austrian Airlines, SWISS, and United Airlines from Washington, D.C. to Sofia. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Boarding

7.6

Overall

7.6

Comfort

7.3

Crew

8.1

Entertainment

6.8

Food

6.8

Reviews

1 / 20
10.0
Excellent

Andra,Aug 2025

LHR - LAX

Flight was very good, few minutes delayed, but good flight. We both are satisfied, thank you!

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Sofia. 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 into for flights to Sofia from Washington, D.C.?

    If you book a flight to Sofia from Washington, D.C., you will be flying to 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 Washington, D.C. to Sofia per day from 5 different airlines.

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

    There are many flights that can get you from Washington, D.C. to Sofia in 18h. Fly via British Airways, KLM, or Turkish Airlines to get the fastest option. There are 4931 mi between Washington, D.C. and Sofia. This flight may include one or multiple stops.

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

    Turkish Airlines, at $530, was found to be the cheapest airline from Washington, D.C. to Sofia.Alternate airlines to your destination round-trip include United Airlines and Lufthansa. Turkish Airlines is 31% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Sofia 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 Washington, D.C. to Sofia?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $551). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $822). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Sofia

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Washington, D.C. to Sofia

Discover the top 5 airlines that operate flights from Washington, D.C. to Sofia. 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 December 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$562Average$696FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$679Average$850FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$946FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$731Average$1,184FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$768Average$1,288FlexibilityNo cancel feeOn-time81%

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