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$279+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$498
(Mytrip)

One-way from

$279
(Kiwi.com)

Popular in

September

Cheapest in

November

Average price

$727
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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Highest demand for flights based on searches. 5% potential increase in price ($50 potential increase over avg. RT price).
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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 August 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 August 21, 2025.

This Mytrip deal was found by Cheapflights users on 8/21. 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 10/56:50 pmBWI - SOF
2 stops20h 30mMultiple Airlines
Sun 10/126:15 amSOF - BWI
2 stops18h 25mMultiple Airlines
Deal found 8/21$498
This oojo deal was found by Cheapflights users on 8/20. 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.
Tue 12/21:30 pmIAD - SOF
1 stop12h 45mTurkish Airlines
Fri 12/1210:05 amSOF - IAD
1 stop16h 10mTurkish Airlines
Deal found 8/20$590
This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/221:30 pmIAD - SOF
1 stop23h 55mTurkish Airlines
Wed 9/109:15 pmSOF - IAD
1 stop29h 30mTurkish Airlines
Deal found 8/20$595
This Priceline deal was found by Cheapflights users on 8/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:45 amIAD - SOF
2 stops25h 35mMultiple Airlines
Wed 12/36:10 amSOF - IAD
1 stop16h 40mMultiple Airlines
Deal found 8/21$600
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Tue 11/185:40 pmIAD - SOF
1 stop17h 40mUnited Airlines
Tue 12/26:00 amSOF - IAD
2 stops36h 23mUnited Airlines
Deal found 8/20$601
This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:30 pmIAD - SOF
1 stop18h 15mTurkish Airlines
Wed 11/194:00 pmSOF - IAD
1 stop26h 45mTurkish Airlines
Deal found 8/20$604
This FlightHub deal was found by Cheapflights users on 8/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1811:05 amDCA - SOF
2 stops19h 40mAir Canada
Tue 12/26:00 amSOF - DCA
2 stops16h 31mAir Canada
Deal found 8/20$605
This FlightHub deal was found by Cheapflights users on 8/21. 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 11/196:00 amDCA - SOF
2 stops29h 20mAir Canada
Wed 12/36:10 amSOF - DCA
2 stops33h 45mAir Canada
Deal found 8/21$607
This Priceline deal was found by Cheapflights users on 8/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/199:45 amIAD - SOF
2 stops25h 35mAir Canada
Wed 12/32:25 pmSOF - IAD
2 stops32h 29mAir Canada
Deal found 8/21$607
This Mytrip deal was found by Cheapflights users on 8/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:20 pmIAD - SOF
2 stops18h 39mMultiple Airlines
Thu 10/235:55 pmSOF - IAD
2 stops28h 25mMultiple Airlines
Deal found 8/20$608
This Ovago deal was found by Cheapflights users on 8/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:40 pmIAD - SOF
1 stop34h 05mTurkish Airlines
Wed 10/89:25 amSOF - IAD
1 stop17h 20mTurkish Airlines
Deal found 8/20$613
This FlightHub deal was found by Cheapflights users on 8/21. 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 11/191:30 pmIAD - SOF
1 stop12h 45mTurkish Airlines
Sun 11/304:00 pmSOF - IAD
1 stop26h 45mTurkish Airlines
Deal found 8/21$614

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 August 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

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

Sun 10/5

6:50 pm-10:20 pm

2 stops20h 30m

Sofia

Sun 10/12

6:15 am-5:40 pm

2 stops18h 25m

$498

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 12/2

1:30 pm-9:15 am

1 stop12h 45m

Sofia

Fri 12/12

10:05 am-7:15 pm

1 stop16h 10m

$590

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 11/19

1:30 pm-9:15 am

1 stop12h 45m

Sofia

Mon 12/1

9:40 pm-7:15 pm

1 stop28h 35m

$595

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Fri 10/10

1:30 pm-2:45 pm

1 stop18h 15m

Sofia

Fri 10/24

3:35 pm-11:45 am

1 stop27h 10m

$595

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 10/15

1:30 pm-8:25 pm

1 stop23h 55m

Sofia

Mon 10/27

4:00 pm-12:45 pm

1 stop26h 45m

$595

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Mon 9/8

1:30 pm-2:45 pm

1 stop18h 15m

Sofia

Mon 9/15

3:35 pm-11:45 am

1 stop27h 10m

$595

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 1/21

1:20 pm-3:15 pm

2 stops18h 55m

Sofia

Wed 2/4

6:10 am-4:13 pm

2 stops17h 03m

$598

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Wed 11/19

9:45 am-6:20 pm

2 stops25h 35m

Sofia

Wed 12/3

6:10 am-3:50 pm

1 stop16h 40m

$600

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 11/18

5:40 pm-6:20 pm

1 stop17h 40m

Sofia

Tue 12/2

6:00 am-11:23 am

2 stops36h 23m

$601

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

Tue 11/18

5:40 pm-6:20 pm

1 stop17h 40m

Sofia

Tue 12/2

6:00 am-11:23 am

2 stops36h 23m

$601

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/21

Showing 1-10 of 54 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 August 8, 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 $1,185). 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 August 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 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 August 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.
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Austrian Airlines
7.6
Good
832 reviews
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
SWISS
7.6
Good
1,702 reviews
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
United Airlines
7.4
Good
8,930 reviews
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Turkish Airlines
7.3
Good
3,950 reviews
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me
Lufthansa
6.8
Okay
7,344 reviews
Austrian Airlines
7.6
Good
832 reviews

Overall

7.6

Boarding

7.6

Crew

8.1

Food

6.8

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

VIE - RHO

They went by offering coffee and didn’t even asked me totally ignored me

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 Turkish Airlines, Air Canada, 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 $551, 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 32% 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, 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 $1,185). 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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$551Average$678FlexibilityNo cancel feeOn-time77%
SWISSCheapest$552Average$993FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$679Average$839FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$961FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$709Average$1,084FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$951Average$1,159FlexibilityNo cancel feeOn-time81%

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