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$219+ 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
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 11, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$446
(Ticket)

One-way from

$219
(Kiwi.com)

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. 15% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 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 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/11. 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.
Sun 2/153:10 pmSEA - SOF
1 stop17h 10mLufthansa
Tue 3/36:00 amSOF - SEA
2 stops23h 03mLufthansa
Deal found 1/11$446
This Mytrip deal was found by Cheapflights users on 1/10. 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 2/249:55 amSEA - SOF
2 stops22h 25mMultiple Airlines
Tue 3/36:00 amSOF - SEA
1 stop16h 10mMultiple Airlines
Deal found 1/10$473
This Kiwi.com deal was found by Cheapflights users on 1/9. 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.
Mon 2/239:55 amSEA - SOF
2 stops17h 30mLufthansa
Mon 3/22:20 pmSOF - SEA
1 stop31h 50mLufthansa
Deal found 1/9$474
This FlightHub deal was found by Cheapflights users on 1/8. 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 4/16:50 pmSEA - SOF
1 stop13h 50mLufthansa
Wed 4/86:20 amSOF - SEA
1 stop16h 00mLufthansa
Deal found 1/8$487
This United Airlines deal was found by Cheapflights users on 1/8. 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 3/245:20 pmSEA - SOF
2 stops20h 25mUnited Airlines
Tue 4/286:10 amSOF - SEA
1 stop16h 10mUnited Airlines
Deal found 1/8$495
This FlightHub deal was found by Cheapflights users on 1/9. 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 1/213:10 pmSEA - SOF
1 stop17h 10mLufthansa
Mon 1/261:45 pmSOF - SEA
2 stops39h 31mLufthansa
Deal found 1/9$496
This FlightHub deal was found by Cheapflights users on 1/8. 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 pmSEA - SOF
2 stops18h 16mMultiple Airlines
Wed 4/811:05 amSOF - SEA
2 stops22h 22mMultiple Airlines
Deal found 1/8$498
This KAYAK deal was found by Cheapflights users on 1/9. 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.
Sun 8/26:50 pmSEA - VAR
2 stops31h 55mLufthansa
Tue 9/159:15 amVAR - SEA
1 stop36h 40mLufthansa
Deal found 1/9$685
This oojo deal was found by Cheapflights users on 1/9. 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.
Sun 8/27:10 pmSEA - VAR
1 stop27h 35mTurkish Airlines
Mon 9/143:35 amVAR - SEA
1 stop23h 40mTurkish Airlines
Deal found 1/9$688
This Turkish Airlines deal was found by Cheapflights users on 1/10. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 pmSEA - VAR
1 stop28h 10mTurkish Airlines
Sun 3/110:00 amVAR - SEA
1 stop17h 05mTurkish Airlines
Deal found 1/10$811
This KAYAK deal was found by Cheapflights users on 1/11. 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.
Sun 8/26:50 pmSEA - BOJ
2 stops37h 25mLufthansa
Tue 9/157:05 pmBOJ - SEA
1 stop26h 50mLufthansa
Deal found 1/11$870
This FlightHub deal was found by Cheapflights users on 1/9. 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.
Sun 8/161:35 pmSEA - BOJ
2 stops22h 00mMultiple Airlines
Sat 9/1211:20 pmBOJ - SEA
2 stops22h 10mMultiple Airlines
Deal found 1/9$971

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 11, 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

Mon 2/23

9:55 am-1:25 pm

2 stops17h 30m

Sofia

Mon 3/2

2:20 pm-12:10 pm

1 stop31h 50m

$474

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

6:50 pm-6:40 pm

1 stop13h 50m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$487

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/24

5:20 pm-10:45 pm

2 stops20h 25m

Sofia

Tue 4/28

6:10 am-12:20 pm

1 stop16h 10m

$495

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

2:24 pm-11:10 pm

2 stops22h 46m

Sofia

Wed 4/8

11:05 am-11:27 pm

2 stops22h 22m

$498

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/15

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Thu 4/30

6:30 am-12:20 pm

1 stop15h 50m

$498

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/15

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Fri 5/1

6:20 am-12:20 pm

1 stop16h 00m

$498

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/15

8:42 am-11:10 pm

2 stops28h 28m

Sofia

Tue 5/5

6:10 am-12:20 pm

1 stop16h 10m

$502

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 2/25

7:00 pm-8:35 pm

1 stop15h 35m

Varna

Sun 3/1

10:00 am-5:05 pm

1 stop17h 05m

$811

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 1/21

7:00 pm-9:10 am

1 stop28h 10m

Varna

Fri 4/24

9:35 am-5:15 pm

1 stop17h 40m

$4,380

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 1/21

7:00 pm-8:35 pm

1 stop15h 35m

Varna

Mon 4/20

3:35 am-5:15 pm

1 stop23h 40m

$4,862

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/10

Showing 1-10 of 23 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 $943). 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 11, 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
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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
1,435 reviews
KLM
7.7
Good
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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
1,518 reviews
KLM
7.7
Good
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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
9,144 reviews
KLM
7.7
Good
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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
4,157 reviews
KLM
7.7
Good
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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
7,710 reviews
KLM
7.7
Good
1,435 reviews

Crew

8.4

Comfort

7.6

Boarding

7.8

Food

7.2

Overall

7.7

Entertainment

7.1

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 15h 35m. Lufthansa provides one of the quickest options available for as low as $811. Seattle and Bulgaria are separated by a distance of 5908 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $943). 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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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 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$541Average$1,055FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$587Average$949FlexibilityNo cancel feeOn-time77%
KLMCheapest$615Average$908FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$621Average$840FlexibilityNo cancel feeOn-time69%

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