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$258+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
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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 February 17, 2026.

This FlightHub deal was found by Cheapflights users on 2/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:20 pm
IAD
-
SOF
1 stop13h 20m
Multiple Airlines
Mon 12/73:00 pm
SOF
-
IAD
1 stop32h 40m
Multiple Airlines
Deal found 2/16$510
This oojo deal was found by Cheapflights users on 2/16. 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 10/198:40 pm
DCA
-
SOF
2 stops40h 50m
British Airways
Mon 12/75:25 pm
SOF
-
DCA
2 stops35h 05m
British Airways
Deal found 2/16$519
This Justfly.com deal was found by Cheapflights users on 2/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:20 pm
IAD
-
SOF
1 stop13h 20m
Lufthansa
Tue 9/226:10 am
SOF
-
IAD
1 stop14h 25m
Lufthansa
Deal found 2/15$533
This Justfly.com deal was found by Cheapflights users on 2/14. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/810:20 pm
IAD
-
SOF
1 stop13h 20m
Lufthansa
Tue 9/226:10 am
SOF
-
IAD
1 stop14h 25m
Lufthansa
Deal found 2/14$535
This United Airlines deal was found by Cheapflights users on 2/16. 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 10/1912:35 pm
IAD
-
SOF
2 stops16h 35m
United Airlines
Mon 12/71:55 pm
SOF
-
IAD
1 stop32h 40m
United Airlines
Deal found 2/16$536
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:55 pm
IAD
-
SOF
1 stop16h 50m
Lufthansa
Wed 4/16:20 am
SOF
-
IAD
1 stop16h 45m
Lufthansa
Deal found 2/14$537
This oojo deal was found by Cheapflights users on 2/16. 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.
Sun 3/11:30 pm
IAD
-
SOF
1 stop12h 15m
Turkish Airlines
Fri 3/134:00 pm
SOF
-
IAD
1 stop34h 20m
Turkish Airlines
Deal found 2/16$544
This Air France deal was found by Cheapflights users on 2/17. 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.
Tue 9/86:15 pm
IAD
-
SOF
1 stop12h 45m
Multiple Airlines
Tue 9/227:00 am
SOF
-
IAD
1 stop15h 35m
Multiple Airlines
Deal found 2/17$547
This FlightHub deal was found by Cheapflights users on 2/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1910:20 pm
IAD
-
SOF
1 stop13h 20m
Lufthansa
Tue 9/156:10 am
SOF
-
IAD
1 stop16h 55m
Lufthansa
Deal found 2/17$548
This United Airlines deal was found by Cheapflights users on 2/15. 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.
Tue 8/115:30 pm
IAD
-
SOF
1 stop11h 40m
United Airlines
Fri 8/286:20 am
SOF
-
IAD
1 stop14h 15m
United Airlines
Deal found 2/15$550
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:20 pm
IAD
-
SOF
1 stop13h 20m
Multiple Airlines
Wed 4/811:05 am
SOF
-
IAD
1 stop12h 40m
Multiple Airlines
Deal found 2/14$551
This United Airlines deal was found by Cheapflights users on 2/16. 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 8/1910:20 pm
IAD
-
SOF
1 stop17h 40m
United Airlines
Tue 9/152:10 pm
SOF
-
IAD
2 stops35h 50m
United Airlines
Deal found 2/16$553

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 February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$535
(Justfly.com)

One-way from

$258
(oojo)

Popular in

December

Cheapest in

January

Average price

$707
Provider with most accurate pricing for Washington, D.C. (WAS)-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Sofia flights.
Search Deals
From Washington, D.C. (WAS) to Sofia
Search Deals
One-way flight from Washington, D.C. (WAS) to Sofia
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 17, 2026.
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 8/12

1:05 pm-12:10 pm

2 stops16h 05m

Sofia

Fri 8/28

6:20 am-3:29 pm

2 stops40h 09m

$563

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Tue 3/31

4:10 pm-6:40 pm

2 stops19h 30m

Sofia

Tue 4/21

12:55 pm-9:53 pm

2 stops15h 58m

$573

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Sat 8/8

10:15 pm-7:20 pm

2 stops38h 05m

Sofia

Sun 8/23

9:05 pm-7:49 am

2 stops41h 44m

$575

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Wed 4/8

9:30 pm-1:25 pm

1 stop32h 55m

Sofia

Mon 4/20

8:10 pm-7:40 pm

1 stop30h 30m

$577

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Sun 4/5

9:35 pm-7:20 pm

1 stop14h 45m

Sofia

Mon 4/20

8:10 pm-7:40 pm

1 stop30h 30m

$577

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Tue 5/19

9:30 pm-8:30 pm

1 stop16h 00m

Sofia

Mon 6/1

8:10 pm-7:40 pm

1 stop30h 30m

$577

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/8

10:15 pm-8:50 pm

1 stop16h 35m

Sofia

Sun 3/22

9:40 pm-12:45 pm

1 stop21h 05m

$578

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 4/8

10:20 pm-6:40 pm

1 stop13h 20m

Sofia

Thu 4/23

6:30 am-4:05 pm

1 stop16h 35m

$579

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 4/5

5:25 pm-12:10 pm

1 stop11h 45m

Sofia

Tue 4/21

6:10 am-4:05 pm

1 stop16h 55m

$579

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 4/5

5:25 pm-12:10 pm

1 stop11h 45m

Sofia

Fri 4/24

6:20 am-7:55 pm

1 stop20h 35m

$579

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/14

Showing 1-10 of 60 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust 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 Washington, D.C.-Sofia flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Sofia flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 February 13, 2026.

Booking 66 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $531). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $768). 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.

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

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

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

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

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

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

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $617.

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

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

Flights via Munich (MUC) have the shortest average one-way travel time for 1-stop routes: 13h 20m.

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

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

Flights via Munich (MUC) offer the fastest connection on this route, with an average layover time of 2h 50m.

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 February 17, 2026.
Read reviews from past customers who have flown SWISS, Austrian Airlines, 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.
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.
SWISS
7.6
Good
1,876 reviews
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.
Austrian Airlines
7.5
Good
897 reviews
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.
United Airlines
7.4
Good
9,311 reviews
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.
Turkish Airlines
7.3
Good
4,220 reviews
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.
Lufthansa
6.8
Okay
7,787 reviews
SWISS
7.6
Good
1,876 reviews

Overall

7.6

Food

7.1

Boarding

7.7

Entertainment

6.8

Comfort

7.4

Crew

8.3

Reviews

1 / 20
10.0
Excellent

Henriette,Dec 2025

ZRH - JNB

The flight was good but again my luggage was delayed. The 2nd time now. I know it us at the airlines fault but maybe there have to be more control on which luggage on on which plane. Especially if a flight has been delayed.

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 11h 40m. Fly via Lufthansa, Turkish Airlines, or United 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 $529, was found to be the cheapest airline from Washington, D.C. to Sofia.Alternate airlines to your destination round-trip include Lufthansa and United Airlines. Turkish Airlines is 29% 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?

    Most travelers choose Washington, D.C. Dulles Intl - Sofia, Washington, D.C. Reagan-National - Sofia or Baltimore/Washington - Sofia when deciding on the best route 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, February is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $531). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $768). 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

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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.
Dulles Intl to Sofia flights
Reagan-National to Sofia flights

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 February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$529Average$700FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$660Average$859FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$666Average$889FlexibilityNo cancel feeOn-time69%
Austrian AirlinesCheapest$866Average$1,131FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$1,062Average$1,288FlexibilityNo cancel feeOn-time81%

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