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Bulgaria

$282+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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Cheap 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 June 10, 2026.

This oojo deal was found by Cheapflights users on 6/6. 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 11/101:25 pm
SEA
-
SOF
1 stop20h 45m
British Airways
Mon 11/235:25 pm
SOF
-
SEA
1 stop28h 05m
British Airways
Deal found 6/6$741
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 11/82:50 pm
SEA
-
SOF
1 stop21h 55m
United Airlines
Wed 11/256:25 am
SOF
-
SEA
1 stop15h 35m
United Airlines
Deal found 6/6$747
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:50 pm
SEA
-
SOF
1 stop13h 50m
Lufthansa
Tue 9/226:10 am
SOF
-
SEA
1 stop15h 45m
Lufthansa
Deal found 6/8$748
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 11/82:50 pm
SEA
-
SOF
1 stop17h 30m
United Airlines
Fri 11/206:00 am
SOF
-
SEA
1 stop17h 00m
United Airlines
Deal found 6/6$749
This British Airways deal was found by Cheapflights users on 6/6. 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.
Tue 11/101:25 pm
SEA
-
SOF
1 stop20h 45m
British Airways
Wed 11/259:00 pm
SOF
-
SEA
1 stop24h 30m
British Airways
Deal found 6/6$750
This KLM deal was found by Cheapflights users on 6/6. 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.
Mon 11/98:25 am
SEA
-
SOF
2 stops19h 40m
KLM
Tue 11/247:00 am
SOF
-
SEA
1 stop14h 47m
KLM
Deal found 6/6$754
This FlightHub deal was found by Cheapflights users on 6/6. 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 11/118:00 am
SEA
-
SOF
2 stops19h 25m
Multiple Airlines
Tue 11/246:25 am
SOF
-
SEA
2 stops18h 12m
Multiple Airlines
Deal found 6/6$758
This Air Canada deal was found by Cheapflights users on 6/6. 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.
Tue 11/108:40 am
SEA
-
SOF
2 stops23h 40m
Air Canada
Mon 11/231:55 pm
SOF
-
SEA
2 stops53h 22m
Air Canada
Deal found 6/6$759
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Mon 11/92:00 pm
SEA
-
SOF
1 stop23h 00m
United Airlines
Fri 11/206:00 am
SOF
-
SEA
1 stop17h 00m
United Airlines
Deal found 6/6$761
This FlightHub deal was found by Cheapflights users on 6/7. 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.
Tue 8/183:00 pm
SEA
-
VAR
2 stops19h 45m
Multiple Airlines
Tue 8/259:10 pm
VAR
-
SEA
2 stops31h 22m
Multiple Airlines
Deal found 6/7$799
This KAYAK deal was found by Cheapflights users on 6/7. 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.
Mon 8/1710:45 am
SEA
-
VAR
2 stops23h 25m
SWISS
Tue 8/259:10 pm
VAR
-
SEA
2 stops31h 22m
SWISS
Deal found 6/7$817
This FlightHub deal was found by Cheapflights users on 6/7. 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.
Tue 8/183:00 pm
SEA
-
VAR
2 stops19h 45m
Lufthansa
Wed 8/269:30 pm
VAR
-
SEA
1 stop29h 29m
Lufthansa
Deal found 6/7$831

Find flight deals from Seattle to Bulgaria

Keep the following information in mind while searching for Seattle to Bulgaria flight deals. Data was last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$741
(oojo)

One-way from

$282
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$1,178
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 Seattle/Tacoma Intl to Bulgaria
Search Deals
One-way flight from Seattle/Tacoma Intl to Bulgaria
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($192 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 June 2026
Search Deals

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 June 10, 2026.
Use the filters below to find and compare flights from Seattle to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 11/10

11:42 am-8:10 pm

2 stops22h 28m

Sofia

Mon 11/23

5:25 pm-11:30 am

1 stop28h 05m

$755

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/6

7:00 am-11:15 pm

2 stops30h 15m

Sofia

Tue 9/22

12:55 pm-4:59 pm

1 stop14h 04m

$770

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 11/10

5:30 pm-10:45 pm

2 stops19h 15m

Sofia

Mon 11/16

6:25 am-12:00 pm

1 stop15h 35m

$802

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 8/23

11:03 am-6:40 pm

2 stops21h 37m

Sofia

Tue 9/1

6:10 am-4:59 pm

1 stop20h 49m

$830

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 8/23

6:50 pm-11:15 pm

1 stop18h 25m

Sofia

Sun 9/6

6:20 am-11:55 am

1 stop15h 35m

$834

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 7/7

3:40 pm-11:15 pm

2 stops21h 35m

Sofia

Wed 8/26

6:10 am-9:58 pm

2 stops25h 48m

$840

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 9/19

11:59 pm-11:15 pm

2 stops37h 16m

Sofia

Sun 10/4

6:20 am-12:20 pm

1 stop16h 00m

$846

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 8/26

7:11 am-11:15 pm

2 stops30h 04m

Sofia

Mon 9/14

2:20 pm-7:15 pm

2 stops38h 55m

$859

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Tue 8/11

7:15 pm-9:20 pm

1 stop16h 05m

Varna

Sun 8/30

9:20 am-10:40 am

1 stop35h 20m

$878

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 9/1

7:15 pm-3:00 pm

1 stop33h 45m

Sofia

Mon 9/14

3:50 pm-5:20 pm

1 stop35h 30m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/6

Showing 1-10 of 36 resultsSorted by cheapest first
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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, August is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $228). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $716). 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.

How far ahead should I book a flight from Seattle to Bulgaria?

Booking 22 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Bulgaria. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 June 10, 2026.
Read reviews from past customers who have flown KLM,Austrian Airlines, andTurkish 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
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,527 reviews
KLM
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Austrian Airlines
7.6
Good
929 reviews
KLM
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Turkish Airlines
7.4
Good
4,408 reviews
KLM
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
United Airlines
7.4
Good
9,808 reviews
KLM
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,053 reviews
KLM
7.8
Good
1,527 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 13h 50m. British Airways provides one of the quickest options available for as low as $748. Seattle and Bulgaria are separated by a distance of 5862 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, August is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $228). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $716). 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

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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 June 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$538Average$908FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$540Average$907FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$545Average$885FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$572Average$859FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$884Average$897FlexibilityNo cancel feeOn-time78%

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