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Bulgaria

$289+ Cheap flights from Washington to Bulgaria

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Washington to Bulgaria

Cheapest flights from Washington to Bulgaria
Explore the most affordable flight options available from Washington to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/114:10 pm
SEA
-
SOF
1 stop21h 35m
Lufthansa
Wed 4/156:20 am
SOF
-
SEA
1 stop16h 00m
Lufthansa
Deal found 2/3$520
This Mytrip deal was found by Cheapflights users on 2/1. 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.
Tue 3/38:00 am
SEA
-
SOF
2 stops28h 45m
Multiple Airlines
Tue 3/102:15 pm
SOF
-
SEA
2 stops41h 01m
Multiple Airlines
Deal found 2/1$531
This Air France deal was found by Cheapflights users on 2/3. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:40 pm
SEA
-
SOF
1 stop33h 20m
Multiple Airlines
Wed 4/87:00 am
SOF
-
SEA
1 stop19h 30m
Multiple Airlines
Deal found 2/3$532
This Mytrip deal was found by Cheapflights users on 2/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:30 am
SEA
-
SOF
2 stops21h 30m
Multiple Airlines
Mon 11/22:25 pm
SOF
-
SEA
1 stop31h 45m
Multiple Airlines
Deal found 2/2$535
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 4/13:48 pm
SEA
-
SOF
2 stops21h 22m
United Airlines
Wed 4/86:20 am
SOF
-
SEA
1 stop16h 00m
United Airlines
Deal found 2/2$538
This oojo deal was found by Cheapflights users on 2/2. 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.
Tue 5/57:00 am
SEA
-
SOF
2 stops27h 30m
British Airways
Wed 6/109:25 pm
SOF
-
SEA
1 stop24h 10m
British Airways
Deal found 2/2$544
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 3/43:10 pm
SEA
-
SOF
1 stop17h 10m
United Airlines
Sun 3/86:05 am
SOF
-
SEA
2 stops26h 23m
United Airlines
Deal found 2/2$545
This Air France deal was found by Cheapflights users on 2/3. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:50 am
GEG
-
SOF
2 stops19h 15m
Multiple Airlines
Wed 3/257:00 am
SOF
-
GEG
2 stops23h 29m
Multiple Airlines
Deal found 2/3$546
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:30 am
PDX
-
SOF
2 stops29h 15m
Lufthansa
Mon 3/96:10 am
SOF
-
PDX
2 stops21h 38m
Lufthansa
Deal found 2/1$548
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 3/51:30 pm
PDX
-
SOF
2 stops23h 15m
United Airlines
Mon 3/96:10 am
SOF
-
PDX
2 stops25h 35m
United Airlines
Deal found 2/2$561
This United Airlines deal was found by Cheapflights users on 1/31. 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 3/31:18 pm
PDX
-
SOF
2 stops19h 02m
United Airlines
Fri 5/16:20 am
SOF
-
PDX
2 stops26h 13m
United Airlines
Deal found 1/31$571
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Thu 3/55:30 am
PDX
-
SOF
2 stops31h 15m
United Airlines
Fri 5/16:20 am
SOF
-
PDX
2 stops27h 30m
United Airlines
Deal found 1/31$584

Find flight deals from Washington to Bulgaria

Keep the following information in mind while searching for Washington to Bulgaria flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$531
(Mytrip)

One-way from

$289
(FlightHub)

Popular in

June

Cheapest in

October

Average price

$733
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
Search Deals
From Washington to Bulgaria
Search Deals
One-way flight from Washington to Bulgaria
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($193 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Bulgaria 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 February 3, 2026.
Use the filters below to find and compare flights from Washington to Bulgaria that are best for you.

Fly from

Washington

Fly to

Bulgaria

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/3

8:00 am-10:45 pm

2 stops28h 45m

Sofia

Tue 3/10

2:15 pm-10:16 pm

2 stops41h 01m

$531

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

6:40 pm-2:00 pm

1 stop33h 20m

Sofia

Wed 4/8

7:00 am-11:45 am

1 stop14h 45m

$532

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-12:10 pm

2 stops18h 10m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$538

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 5/5

7:00 am-8:30 pm

2 stops27h 30m

Sofia

Wed 6/10

9:25 pm-11:35 am

1 stop24h 10m

$544

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Sun 3/8

6:05 am-10:28 pm

2 stops26h 23m

$545

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 5/6

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Wed 6/10

6:20 am-12:20 pm

1 stop16h 00m

$546

SpokaneSofia

GEG - SOF

GEGSOF

Spokane

Wed 3/11

9:50 am-2:05 pm

2 stops19h 15m

Sofia

Wed 3/25

7:00 am-9:29 pm

2 stops23h 29m

$546

PortlandSofia

PDX - SOF

PDXSOF

Portland

Thu 3/5

7:30 am-10:45 pm

2 stops29h 15m

Sofia

Mon 3/9

6:10 am-6:48 pm

2 stops21h 38m

$561

PortlandSofia

PDX - SOF

PDXSOF

Portland

Mon 3/9

5:05 am-10:45 pm

2 stops32h 40m

Sofia

Fri 5/1

6:20 am-11:50 pm

2 stops27h 30m

$571

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 3/4

7:30 am-10:45 pm

2 stops29h 15m

Sofia

Fri 5/1

6:20 am-11:50 pm

2 stops27h 30m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 38 results
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Best time to book a flight from Washington to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Washington 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 to Bulgaria

What is the cheapest month to book a flight from State of Washington to Bulgaria?

Currently, July is the cheapest month in which you can book a flight from State of Washington to Bulgaria (average of $520). Flying from State of Washington to Bulgaria in June is currently the most expensive (average of $947). 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.

Related info for your journey

Find useful and relevant information for your journey from Washington to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Bulgaria?

    Departing from State of Washington to Bulgaria will take you 16h 10m. Airlines will cover a distance of 5908 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Washington to Bulgaria that include hotel bookings?

    Yes. In addition to deals on Washington to Bulgaria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Bulgaria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Bulgaria.

  • Can I find deals for business class flights from Washington to Bulgaria?

    Yes. Cheapflights offers flight deals from Washington to Bulgaria 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 State of Washington to Bulgaria?

    Currently, July is the cheapest month in which you can book a flight from State of Washington to Bulgaria (average of $520). Flying from State of Washington to Bulgaria in June is currently the most expensive (average of $947). 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 to Bulgaria

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Washington to Bulgaria

Discover the top 5 airlines that operate flights from Washington to Bulgaria. 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$540Average$1,071FlexibilityNo cancel feeOn-time76%
KLMCheapest$548Average$972FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$587Average$826FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$620Average$840FlexibilityNo cancel feeOn-time69%

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