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Bulgaria

$237+ Cheap flights from Seattle (SEA) 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Feb 18 — Feb 251
Wed 2/18
Wed 2/25
1 adult, Economy
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Cheap flight deals from Seattle to Bulgaria

Keep the following information in mind while searching for Seattle to Bulgaria flight deals. Data was last updated January 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$458
(Kiwi.com)

One-way from

$237
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$615
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
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From Seattle/Tacoma Intl to Bulgaria
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One-way flight from Seattle/Tacoma Intl to Bulgaria
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Highest demand for flights based on searches. 18% potential increase in price ($175 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Seattle to Bulgaria

Cheapest flights from Seattle to Bulgaria
Explore the most affordable flight options available from Seattle to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/19. 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 3/43:10 pm
SEA
-
SOF
1 stop17h 10m
Lufthansa
Wed 3/116:05 am
SOF
-
SEA
1 stop17h 15m
Lufthansa
Deal found 1/19$458
This Mytrip deal was found by Cheapflights users on 1/17. 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.
Wed 3/43:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Thu 5/76:30 am
SOF
-
SEA
2 stops25h 50m
Multiple Airlines
Deal found 1/17$472
This Gotogate deal was found by Cheapflights users on 1/17. 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.
Wed 2/43:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Tue 4/146:10 am
SOF
-
SEA
2 stops26h 00m
Multiple Airlines
Deal found 1/17$474
This Mytrip deal was found by Cheapflights users on 1/16. 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.
Tue 3/310:05 am
SEA
-
SOF
2 stops26h 40m
Multiple Airlines
Tue 3/106:05 am
SOF
-
SEA
2 stops25h 11m
Multiple Airlines
Deal found 1/16$481
This Mytrip deal was found by Cheapflights users on 1/17. 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.
Wed 2/43:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Wed 4/156:20 am
SOF
-
SEA
2 stops25h 31m
Multiple Airlines
Deal found 1/17$485
This FlightHub deal was found by Cheapflights users on 1/17. 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 2/43:10 pm
SEA
-
SOF
1 stop21h 35m
Lufthansa
Tue 4/146:10 am
SOF
-
SEA
1 stop16h 10m
Lufthansa
Deal found 1/17$486
This FlightHub deal was found by Cheapflights users on 1/16. 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 4/12:24 pm
SEA
-
SOF
2 stops22h 46m
Lufthansa
Wed 4/86:20 am
SOF
-
SEA
1 stop16h 00m
Lufthansa
Deal found 1/16$488
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Tue 4/281:35 pm
SEA
-
SOF
1 stop20h 55m
British Airways
Mon 5/118:10 pm
SOF
-
SEA
1 stop32h 15m
British Airways
Deal found 1/19$490
This FlightHub deal was found by Cheapflights users on 1/19. 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 3/410:55 am
SEA
-
SOF
2 stops18h 20m
Multiple Airlines
Wed 3/116:05 am
SOF
-
SEA
1 stop17h 15m
Multiple Airlines
Deal found 1/19$491
This KAYAK deal was found by Cheapflights users on 1/19. 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.
Tue 4/2810:25 am
SEA
-
SOF
2 stops24h 05m
British Airways
Wed 5/139:25 pm
SOF
-
SEA
1 stop31h 00m
British Airways
Deal found 1/19$493
This KAYAK deal was found by Cheapflights users on 1/18. 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.
Tue 4/212:10 pm
SEA
-
VAR
2 stops39h 05m
Lufthansa
Fri 5/19:45 am
VAR
-
SEA
1 stop17h 14m
Lufthansa
Deal found 1/18$544
This KAYAK deal was found by Cheapflights users on 1/18. 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.
Tue 4/212:10 pm
SEA
-
VAR
2 stops39h 05m
Lufthansa
Thu 4/309:30 am
VAR
-
SEA
1 stop36h 50m
Lufthansa
Deal found 1/18$563

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 January 19, 2026.
Use the filters below to find and compare flights from Seattle to Bulgaria that are best for you.

Fly from

Seattle

Fly to

Bulgaria

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 2/4

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Tue 4/14

6:10 am-7:18 pm

2 stops23h 08m

$477

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/3

10:05 am-6:20 pm

2 stops22h 15m

Sofia

Tue 3/10

6:00 am-1:10 pm

1 stop16h 10m

$482

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 2/4

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Wed 4/15

6:20 am-9:51 pm

2 stops25h 31m

$485

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 2/4

2:10 pm-6:20 pm

2 stops18h 10m

Sofia

Tue 4/14

6:10 am-7:00 pm

2 stops22h 50m

$495

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/24

3:30 pm-10:45 pm

2 stops22h 15m

Sofia

Tue 4/28

6:10 am-12:20 pm

1 stop16h 10m

$497

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 5/3

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Wed 5/13

6:20 am-12:20 pm

1 stop16h 00m

$497

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 5/3

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Tue 5/12

6:10 am-12:20 pm

1 stop16h 10m

$497

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/29

2:24 pm-11:10 pm

2 stops22h 46m

Sofia

Tue 5/12

6:10 am-12:20 pm

1 stop16h 10m

$502

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 4/27

5:00 am-11:10 pm

2 stops32h 10m

Sofia

Tue 5/12

6:10 am-12:20 pm

1 stop16h 10m

$502

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/3

2:00 pm-10:45 pm

1 stop22h 45m

Sofia

Tue 3/10

6:00 am-1:10 pm

1 stop16h 10m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 31 results
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Best time to book a flight from Seattle to Bulgaria

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

What is the cheapest month to book a flight from Seattle to Bulgaria?

Currently, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $513). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $949). 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 Bulgaria

Get insights into the airlines that provide service to Bulgaria. 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 Bulgaria. Reviews last updated January 19, 2026.
Read reviews from past customers who have flown KLM, Air France, and United Airlines from Seattle to Bulgaria. 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
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,441 reviews
KLM
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Air France
7.4
Good
1,523 reviews
KLM
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,177 reviews
KLM
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Turkish Airlines
7.3
Good
4,196 reviews
KLM
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,731 reviews
KLM
7.7
Good
1,441 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bulgaria. 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 from for flights from Seattle to Bulgaria?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Bulgaria.

  • How long is the flight from Seattle to Bulgaria?

    A quick flight from Seattle to Bulgaria can take about 18h 10m. Lufthansa provides one of the quickest options available for as low as $495. Seattle and Bulgaria are separated by a distance of 5862 mi.

  • What are the most popular routes from Seattle to Bulgaria?

    While some choose either Seattle/Tacoma Intl - Varna or Seattle/Tacoma Intl - Bourgas, Seattle/Tacoma Intl - Sofia is the most popular route from Seattle to Bulgaria.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Bulgaria?

    Currently, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $513). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $949). 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.

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Top 5 airlines flying from Seattle to Bulgaria

Discover the top 5 airlines that operate flights from Seattle 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 January 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$541Average$1,055FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$587Average$867FlexibilityNo cancel feeOn-time77%
KLMCheapest$615Average$908FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$620Average$830FlexibilityNo cancel feeOn-time69%

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