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$324+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SOF
jul. 8 — jul. 151
mar. 7/8
mar. 7/15
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 10 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 julio 3, 2025.

Round-trip from

$647
(FlightHub)

One-way from

$324
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$1,068
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. 18% potential increase in price ($187 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/3. 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.
mié. 10/19:40 pmIAD - SOF
1 stop34h 05mTurkish Airlines
mié. 10/153:35 pmSOF - IAD
1 stop35h 10mTurkish Airlines
Deal found 7/3$647
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/319:45 pmIAD - SOF
1 stop30h 30mMultiple Airlines
vie. 11/146:05 amSOF - IAD
2 stops21h 24mMultiple Airlines
Deal found 7/3$649
This SWISS deal was found by Cheapflights users on 7/1. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/278:45 pmIAD - SOF
2 stops32h 15mSWISS
mié. 8/2012:45 pmSOF - IAD
2 stops34h 30mSWISS
Deal found 7/1$650
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/306:00 amDCA - SOF
2 stops25h 10mAir Canada
jue. 11/136:00 amSOF - DCA
2 stops22h 56mAir Canada
Deal found 7/2$651
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/75:40 pmIAD - SOF
1 stop12h 30mUnited Airlines
mar. 11/112:20 pmSOF - IAD
1 stop12h 55mUnited Airlines
Deal found 7/2$651
This KAYAK deal was found by Cheapflights users on 7/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 7/276:10 pmIAD - SOF
1 stop21h 40mLufthansa
mié. 8/202:05 pmSOF - IAD
1 stop32h 10mLufthansa
Deal found 7/2$661
This Air Canada deal was found by Cheapflights users on 7/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/74:30 pmIAD - SOF
2 stops18h 45mAir Canada
mar. 11/116:00 amSOF - IAD
2 stops17h 21mAir Canada
Deal found 7/1$662
This Expedia deal was found by Cheapflights users on 7/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/18:25 pmIAD - SOF
2 stops37h 55mBritish Airways
sáb. 11/1512:05 pmSOF - IAD
1 stop14h 40mBritish Airways
Deal found 7/1$665
This Air France deal was found by Cheapflights users on 7/1. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/2812:35 pmIAD - SOF
2 stops18h 20mAir France
vie. 12/127:00 amSOF - IAD
1 stop16h 35mAir France
Deal found 7/1$670
This British Airways deal was found by Cheapflights users on 7/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/138:35 pmBWI - SOF
1 stop31h 40mBritish Airways
lun. 11/175:25 pmSOF - BWI
1 stop32h 20mBritish Airways
Deal found 7/2$674
This Mytrip deal was found by Cheapflights users on 7/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/116:50 pmBWI - SOF
2 stops18h 05mMultiple Airlines
lun. 8/255:00 amSOF - BWI
3 stops19h 40mMultiple Airlines
Deal found 7/1$683
This United Airlines deal was found by Cheapflights users on 7/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:15 amBWI - SOF
2 stops24h 40mUnited Airlines
lun. 11/172:20 pmSOF - BWI
2 stops38h 04mUnited Airlines
Deal found 7/2$689

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 julio 3, 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

mié. 10/1

9:40 pm-2:45 pm

1 stop34h 05m

Sofia

mié. 10/15

3:35 pm-7:45 pm

1 stop35h 10m

$647

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 10/31

9:45 pm-10:15 am

1 stop30h 30m

Sofia

vie. 11/14

6:05 am-8:29 pm

2 stops21h 24m

$649

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 7/27

8:45 pm-12:00 pm

2 stops32h 15m

Sofia

mié. 8/20

12:45 pm-4:15 pm

2 stops34h 30m

$650

Washington, D.C.Sofia

DCA - SOF

DCASOF

Washington, D.C. Reagan-National

jue. 10/30

6:00 am-1:10 pm

2 stops25h 10m

Sofia

jue. 11/13

6:00 am-9:56 pm

2 stops22h 56m

$651

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 11/7

5:40 pm-1:10 pm

1 stop12h 30m

Sofia

mar. 11/11

6:00 am-4:21 pm

2 stops17h 21m

$651

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

dom. 7/27

6:10 pm-10:50 pm

1 stop21h 40m

Sofia

mié. 8/20

2:05 pm-3:15 pm

1 stop32h 10m

$661

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 11/7

4:30 pm-6:15 pm

2 stops18h 45m

Sofia

mar. 11/11

6:00 am-4:21 pm

2 stops17h 21m

$662

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

sáb. 11/1

8:25 pm-4:20 pm

2 stops37h 55m

Sofia

sáb. 11/15

12:05 pm-7:45 pm

1 stop14h 40m

$665

Washington, D.C.Sofia

IAD - SOF

IADSOF

Washington, D.C. Dulles Intl

vie. 11/28

12:35 pm-1:55 pm

2 stops18h 20m

Sofia

vie. 12/12

7:00 am-4:35 pm

1 stop16h 35m

$670

BaltimoreSofia

BWI - SOF

BWISOF

Baltimore/Washington

jue. 11/13

8:35 pm-11:15 am

1 stop31h 40m

Sofia

lun. 11/17

5:25 pm-6:45 pm

1 stop32h 20m

$674

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 32 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 June 27, 2025.

Booking 10 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 $1,189). 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 julio 3, 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.

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 julio 3, 2025.
Read reviews from past customers who have flown KLM, LOT, and Air France 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.
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,366 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
LOT
7.6
Good
1,093 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Air France
7.5
Good
1,473 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
SWISS
7.5
Good
1,654 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,845 reviews
KLM
7.8
Good
1,366 reviews

Crew

8.4

Food

7.2

Entertainment

7.1

Comfort

7.7

Boarding

7.8

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • What are the cheapest airlines flying from Washington, D.C. to Sofia round-trip?

    Turkish Airlines, at $647, was found to be the cheapest airline from Washington, D.C. to Sofia.Alternate airlines to your destination round-trip include SWISS and Air Canada. Turkish Airlines is 20% 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 $417. Users have also found prices from $463 and $515 on ITA Airways and Air France, 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 $1,189). 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 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 julio 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$552Average$699FlexibilityNo cancel feeOn-time77%
SWISSCheapest$552Average$1,049FlexibilityNo cancel feeOn-time79%
Austrian AirlinesCheapest$667Average$1,069FlexibilityNo cancel feeOn-time78%
United AirlinesCheapest$679Average$885FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$693Average$1,001FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$879Average$1,159FlexibilityNo cancel feeOn-time81%

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