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$260+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Sofia are usually found in November or February, booked 42 days in advance, depart on a Wednesday or Sunday and return on a Monday

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 September 17, 2025.

Round-trip from

$523
(Kiwi.com)

One-way from

$260
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$653
From Washington, D.C. (WAS) to Sofia
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One-way flight from Washington, D.C. (WAS) to Sofia
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 17, 2025.

This Mytrip deal was found by Cheapflights users on 9/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:45 amIAD - SOF
2 stops26h 35mMultiple Airlines
Mon 11/103:00 pmSOF - IAD
1 stop32h 40mMultiple Airlines
Deal found 9/16$535
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:00 pmIAD - SOF
1 stop10h 50mAustrian Airlines
Wed 11/197:55 amSOF - IAD
1 stop13h 45mAustrian Airlines
Deal found 9/16$536
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:30 pmIAD - SOF
1 stop18h 15mTurkish Airlines
Wed 10/89:25 amSOF - IAD
1 stop33h 20mTurkish Airlines
Deal found 9/15$538
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:30 pmIAD - SOF
2 stops14h 50mMultiple Airlines
Tue 11/186:00 amSOF - IAD
2 stops21h 54mMultiple Airlines
Deal found 9/15$544
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:55 pmIAD - SOF
1 stop12h 25mLufthansa
Wed 11/196:10 amSOF - IAD
1 stop16h 40mLufthansa
Deal found 9/16$546
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:35 pmBWI - SOF
1 stop12h 45mBritish Airways
Mon 11/105:25 pmSOF - BWI
1 stop32h 20mBritish Airways
Deal found 9/16$548
This British Airways deal was found by Cheapflights users on 9/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:20 pmIAD - SOF
1 stop15h 00mBritish Airways
Mon 11/105:25 pmSOF - IAD
1 stop29h 10mBritish Airways
Deal found 9/16$548
This United deal was found by Cheapflights users on 9/16. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/510:55 pmIAD - SOF
1 stop12h 25mMultiple Airlines
Wed 11/196:10 amSOF - IAD
2 stops17h 11mMultiple Airlines
Deal found 9/16$551
This Air Canada deal was found by Cheapflights users on 9/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:40 amDCA - SOF
2 stops19h 50mMultiple Airlines
Wed 11/122:25 pmSOF - DCA
2 stops25h 30mMultiple Airlines
Deal found 9/15$555
This FlightHub deal was found by Cheapflights users on 9/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2210:20 pmIAD - SOF
1 stop13h 20mMultiple Airlines
Mon 11/33:00 pmSOF - IAD
1 stop32h 40mMultiple Airlines
Deal found 9/15$555
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:25 pmIAD - SOF
1 stop11h 15mMultiple Airlines
Wed 11/122:00 pmSOF - IAD
1 stop13h 05mMultiple Airlines
Deal found 9/15$557
This FlightHub deal was found by Cheapflights users on 9/16. 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.
Wed 11/56:50 pmDCA - SOF
2 stops16h 10mAir Canada
Wed 11/196:10 amSOF - DCA
2 stops16h 21mAir Canada
Deal found 9/16$562

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 September 17, 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 1/14

6:00 pm-1:50 pm

1 stop12h 50m

Sofia

Wed 1/28

7:55 am-2:40 pm

1 stop13h 45m

$523

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 11/4

8:30 pm-6:20 pm

2 stops14h 50m

Sofia

Tue 11/18

6:00 am-8:54 pm

2 stops21h 54m

$544

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Sun 10/26

9:35 pm-4:20 pm

1 stop12h 45m

Sofia

Mon 11/10

5:25 pm-6:45 pm

1 stop32h 20m

$548

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 11/5

9:45 am-6:20 pm

2 stops25h 35m

Sofia

Wed 11/19

6:10 am-8:54 pm

2 stops21h 44m

$551

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Sun 3/1

6:00 pm-6:00 pm

1 stop17h 00m

Sofia

Fri 3/13

6:10 am-4:50 pm

1 stop16h 40m

$551

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 11/5

10:55 pm-6:20 pm

1 stop12h 25m

Sofia

Wed 11/19

6:10 am-4:21 pm

2 stops17h 11m

$551

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 2/17

5:40 pm-1:15 pm

1 stop12h 35m

Sofia

Tue 3/3

6:00 am-8:59 pm

2 stops21h 59m

$552

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 1/13

5:40 pm-1:15 pm

1 stop12h 35m

Sofia

Tue 1/27

6:00 am-4:24 pm

2 stops17h 24m

$552

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 1/13

1:15 pm-1:45 pm

2 stops17h 30m

Sofia

Tue 1/27

6:00 am-8:59 pm

2 stops21h 59m

$556

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 1/14

6:20 pm-10:45 pm

2 stops21h 25m

Sofia

Wed 1/28

6:10 am-11:35 am

2 stops36h 25m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 58 results
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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 September 12, 2025.

Booking 42 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, November is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $632). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $1,183). 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 September 17, 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 afternoon tend to be the most expensive. A flight at noon could potentially save you up to 41% 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 September 17, 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
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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
850 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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
7.6
Good
1,737 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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
8,926 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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
3,965 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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
7,409 reviews
Austrian Airlines
7.6
Good
850 reviews

Comfort

7.3

Entertainment

6.8

Food

6.8

Boarding

7.6

Crew

8.1

Overall

7.6

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 12h 45m. Fly via British Airways, Air Canada, or Lufthansa to get the fastest option. There are 4889 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 $552, was found to be the cheapest airline from Washington, D.C. to Sofia.Alternate airlines to your destination round-trip include SWISS and United Airlines. Turkish Airlines 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 Air Canada. According to our data, you can fly for as low as $461. Users have also found prices from $465 and $498 on United Airlines and British Airways, 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, November is the cheapest month in which you can book a flight from Washington, D.C. to Sofia (average of $632). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $1,183). 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.
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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$552Average$669FlexibilityNo cancel feeOn-time77%
SWISSCheapest$552Average$993FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$679Average$839FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$955FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$719Average$1,069FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$951Average$1,159FlexibilityNo cancel feeOn-time81%

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