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$228+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
feb. 3 — feb. 101
mar. 2/3
mar. 2/10
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 enero 4, 2026.

This oojo deal was found by Cheapflights users on 1/4. 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.
mié. 4/89:30 pmBWI - SOF
1 stop33h 00mBritish Airways
mié. 4/229:30 pmSOF - BWI
1 stop29h 10mBritish Airways
Deal found 1/4$518
This oojo deal was found by Cheapflights users on 1/2. 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.
lun. 4/66:14 pmDCA - SOF
2 stops43h 26mBritish Airways
lun. 4/208:00 pmSOF - DCA
2 stops29h 59mBritish Airways
Deal found 1/2$518
This FlightHub deal was found by Cheapflights users on 1/3. 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.
jue. 2/261:30 pmIAD - SOF
1 stop12h 15mTurkish Airlines
jue. 3/129:40 pmSOF - IAD
1 stop28h 40mTurkish Airlines
Deal found 1/3$531
This oojo deal was found by Cheapflights users on 1/1. 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.
dom. 3/19:15 pmIAD - SOF
1 stop16h 35mTurkish Airlines
vie. 3/139:40 pmSOF - IAD
1 stop28h 40mTurkish Airlines
Deal found 1/1$535
This oojo deal was found by Cheapflights users on 1/1. 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.
mar. 1/131:30 pmIAD - SOF
1 stop24h 20mTurkish Airlines
mar. 1/279:35 amSOF - IAD
1 stop33h 10mTurkish Airlines
Deal found 1/1$536
This Kiwi.com deal was found by Cheapflights users on 1/2. 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.
mar. 2/310:15 pmIAD - SOF
2 stops18h 40mMultiple Airlines
mar. 2/176:00 amSOF - IAD
1 stop15h 35mMultiple Airlines
Deal found 1/2$538
This oojo deal was found by Cheapflights users on 1/1. 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.
lun. 1/121:30 pmIAD - SOF
1 stop24h 20mTurkish Airlines
lun. 1/269:35 amSOF - IAD
1 stop16h 45mTurkish Airlines
Deal found 1/1$542
This oojo deal was found by Cheapflights users on 1/3. 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.
lun. 2/231:30 pmIAD - SOF
1 stop18h 40mTurkish Airlines
lun. 3/99:40 pmSOF - IAD
1 stop28h 40mTurkish Airlines
Deal found 1/3$543
This oojo deal was found by Cheapflights users on 1/2. 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.
mié. 5/610:25 pmIAD - SOF
1 stop32h 05mBritish Airways
mié. 5/209:30 pmSOF - IAD
1 stop25h 20mBritish Airways
Deal found 1/2$547
This oojo deal was found by Cheapflights users on 1/3. 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.
lun. 4/68:45 pmDCA - SOF
2 stops40h 55mBritish Airways
mié. 4/159:30 pmSOF - DCA
2 stops28h 28mBritish Airways
Deal found 1/3$548
This FlightHub deal was found by Cheapflights users on 1/4. 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.
dom. 1/251:30 pmIAD - SOF
1 stop18h 40mTurkish Airlines
jue. 2/124:00 pmSOF - IAD
1 stop34h 20mTurkish Airlines
Deal found 1/4$550
This KLM deal was found by Cheapflights users on 1/4. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/15:40 pmIAD - SOF
1 stop13h 20mKLM
mar. 9/227:00 amSOF - IAD
1 stop15h 35mKLM
Deal found 1/4$551

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 enero 4, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$518
(oojo)

One-way from

$228
(oojo)

Popular in

June

Cheapest in

September

Average price

$661
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. 14% potential increase in price ($129 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 enero 4, 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

jue. 2/26

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

jue. 3/5

9:35 am-7:20 pm

1 stop16h 45m

$531

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

mar. 2/3

9:15 pm-8:45 am

1 stop28h 30m

Sofia

mar. 2/17

9:35 am-7:20 pm

1 stop16h 45m

$531

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

mié. 2/25

9:15 pm-8:45 am

1 stop28h 30m

Sofia

mié. 3/11

9:40 pm-12:45 pm

1 stop21h 05m

$531

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

jue. 2/5

9:15 pm-3:10 pm

1 stop34h 55m

Sofia

jue. 2/19

4:00 pm-7:20 pm

1 stop34h 20m

$531

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

jue. 2/26

1:30 pm-8:45 am

1 stop12h 15m

Sofia

jue. 3/12

9:40 pm-8:20 pm

1 stop28h 40m

$531

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 3/1

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

vie. 3/13

9:40 pm-8:20 pm

1 stop28h 40m

$535

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

lun. 1/26

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

lun. 2/9

4:00 pm-7:20 pm

1 stop34h 20m

$542

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

lun. 1/12

1:30 pm-8:50 pm

1 stop24h 20m

Sofia

lun. 1/26

9:35 am-7:20 pm

1 stop16h 45m

$542

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 2/27

9:15 pm-8:50 pm

1 stop16h 35m

Sofia

vie. 3/13

9:40 pm-12:45 pm

1 stop21h 05m

$542

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 1/25

1:30 pm-3:10 pm

1 stop18h 40m

Sofia

jue. 2/12

4:00 pm-7:20 pm

1 stop34h 20m

$550

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

Showing 1-10 of 36 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 January.
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 January 2, 2026.

Booking 8 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 $813). 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.

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 enero 4, 2026.
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
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Austrian Airlines
7.6
Good
889 reviews
Austrian Airlines
7.6
Good
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
SWISS
7.5
Good
1,837 reviews
Austrian Airlines
7.6
Good
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
United Airlines
7.4
Good
9,138 reviews
Austrian Airlines
7.6
Good
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Turkish Airlines
7.3
Good
4,148 reviews
Austrian Airlines
7.6
Good
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.
Lufthansa
6.8
Okay
7,681 reviews
Austrian Airlines
7.6
Good
889 reviews

Entertainment

6.8

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.3

Food

6.8

Reviews

1 / 20
2.0
Mediocre

Nate,Dec 2025

IAD - GSP

Again, I missed this flight because of the first leg of my journey being delayed by three hours. I hope the people on the flight had a nice flight.

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 19h 05m. Fly via Turkish Airlines, British Airways, or Air Canada 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?

    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?

    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 $551). Flying from Washington, D.C. to Sofia in June is currently the most expensive (average of $813). 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 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 enero 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$530Average$714FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$679Average$904FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$683Average$930FlexibilityNo cancel feeOn-time76%
Austrian AirlinesCheapest$731Average$1,131FlexibilityNo cancel feeOn-time78%
ITA AirwaysCheapest$768Average$1,241FlexibilityNo cancel feeOn-time81%

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