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$287+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Sofia are usually found in September or February, booked 47 days in advance, depart on a Wednesday or Sunday and return on a Monday

Find 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 November 18, 2025.

This FlightHub deal was found by Cheapflights users on 11/17. 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.
Tue 12/21:30 pmIAD - SOF
1 stop12h 15mTurkish Airlines
Fri 12/199:35 amSOF - IAD
1 stop16h 45mTurkish Airlines
Deal found 11/17$613
This Kiwi.com deal was found by Cheapflights users on 11/18. 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.
Fri 11/2810:55 pmIAD - SOF
1 stop16h 50mLufthansa
Mon 12/226:05 amSOF - IAD
1 stop21h 00mLufthansa
Deal found 11/18$643
This CrystalTravel deal was found by Cheapflights users on 11/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2410:55 pmIAD - SOF
1 stop12h 25mLufthansa
Mon 12/221:45 pmSOF - IAD
1 stop13h 20mLufthansa
Deal found 11/17$655
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 12/106:10 pmIAD - SOF
2 stops17h 10mLufthansa
Wed 12/246:10 amSOF - IAD
1 stop16h 40mLufthansa
Deal found 11/18$661
This FlightHub deal was found by Cheapflights users on 11/18. 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.
Fri 11/281:30 pmIAD - SOF
1 stop12h 15mTurkish Airlines
Mon 12/229:35 amSOF - IAD
1 stop33h 10mTurkish Airlines
Deal found 11/18$669
This Gotogate deal was found by Cheapflights users on 11/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:45 amIAD - SOF
2 stops20h 30mMultiple Airlines
Mon 12/221:45 pmSOF - IAD
1 stop13h 20mMultiple Airlines
Deal found 11/17$675
This CrystalTravel deal was found by Cheapflights users on 11/17. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:30 pmIAD - SOF
2 stops14h 50mMultiple Airlines
Tue 12/236:00 amSOF - IAD
1 stop16h 50mMultiple Airlines
Deal found 11/17$676
This CrystalTravel deal was found by Cheapflights users on 11/18. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/98:30 pmIAD - SOF
2 stops14h 50mMultiple Airlines
Thu 2/126:00 amSOF - IAD
1 stop16h 50mMultiple Airlines
Deal found 11/18$677
This United Airlines deal was found by Cheapflights users on 11/18. 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.
Fri 11/288:19 amIAD - SOF
2 stops21h 56mUnited Airlines
Mon 12/226:10 amSOF - IAD
1 stop16h 40mUnited Airlines
Deal found 11/18$698
This CrystalTravel deal was found by Cheapflights users on 11/18. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:55 pmIAD - SOF
1 stop12h 25mLufthansa
Wed 11/262:00 pmSOF - IAD
1 stop13h 05mLufthansa
Deal found 11/18$703
This Booking.com deal was found by Cheapflights users on 11/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/285:45 pmDCA - SOF
2 stops36h 15mBritish Airways
Mon 12/225:25 pmSOF - DCA
2 stops54h 52mBritish Airways
Deal found 11/18$747
This Air Canada deal was found by Cheapflights users on 11/18. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:40 amDCA - SOF
2 stops25h 40mAir Canada
Sun 11/236:10 amSOF - DCA
2 stops16h 21mAir Canada
Deal found 11/18$752

Cheap 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 November 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$521
(FlightHub)

One-way from

$287
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$790
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. 6% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 18, 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

Sun 3/1

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

Fri 3/13

9:40 pm-8:20 pm

1 stop28h 40m

$530

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 1/18

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

Tue 2/3

9:40 pm-7:20 pm

1 stop28h 40m

$586

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 1/8

1:30 pm-8:45 am

1 stop12h 15m

Sofia

Thu 1/22

4:00 pm-11:45 am

1 stop26h 45m

$594

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 1/19

1:30 pm-8:45 am

1 stop12h 15m

Sofia

Sun 2/1

9:40 pm-11:45 am

1 stop21h 05m

$626

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Thu 3/12

10:15 pm-8:50 pm

1 stop16h 35m

Sofia

Mon 3/16

9:40 pm-8:20 pm

1 stop28h 40m

$643

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Fri 11/28

1:30 pm-8:45 am

1 stop12h 15m

Sofia

Mon 12/22

9:35 am-11:45 am

1 stop33h 10m

$669

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 3/10

10:15 pm-8:50 pm

1 stop16h 35m

Sofia

Sat 6/6

9:35 am-11:35 am

1 stop33h 00m

$670

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Wed 3/18

6:00 am-6:20 pm

2 stops30h 20m

Sofia

Wed 4/1

6:20 am-9:53 pm

2 stops22h 33m

$679

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 1/19

5:40 pm-1:15 pm

1 stop12h 35m

Sofia

Tue 2/3

6:00 am-4:24 pm

2 stops17h 24m

$679

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

Sun 2/1

6:00 am-6:20 pm

2 stops29h 20m

Sofia

Fri 2/13

2:35 pm-8:55 am

2 stops25h 20m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 53 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 November.
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

*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 November 14, 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 $548). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $825). 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 November 18, 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 30% on airfare.

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 November 18, 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.
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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!
Austrian Airlines
7.6
Good
873 reviews
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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!
SWISS
7.5
Good
1,788 reviews
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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!
United Airlines
7.4
Good
9,015 reviews
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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!
Turkish Airlines
7.3
Good
4,047 reviews
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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!
Lufthansa
6.8
Okay
7,576 reviews
Austrian Airlines
7.6
Good
873 reviews

Boarding

7.6

Comfort

7.3

Crew

8.1

Food

6.8

Overall

7.6

Entertainment

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 6 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 15h 21m. Fly via Turkish Airlines, Air Canada, or British Airways to get the fastest option. There are 4919 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?

    SWISS, at $552, was found to be the cheapest airline from Washington, D.C. to Sofia.Alternate airlines to your destination round-trip include Turkish Airlines and United Airlines. SWISS is 28% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to Sofia one-way?

    For one-way options, check prices for Turkish Airlines. According to our data, you can fly for as low as $469. Users have also found prices from $485 and $503 on British Airways and Air Canada, respectively.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $548). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $825). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 6 airlines flying from Washington, D.C. to Sofia

Discover the top 6 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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$552Average$993FlexibilityNo cancel feeOn-time79%
Turkish AirlinesCheapest$555Average$698FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$679Average$843FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$964FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$731Average$1,184FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$951Average$1,241FlexibilityNo cancel feeOn-time81%

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