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$286+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
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 March 17, 2026.

This FlightHub deal was found by Cheapflights users on 3/17. 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.
Sun 9/67:10 pm
SEA
-
SOF
1 stop15h 05m
Turkish Airlines
Tue 9/229:35 am
SOF
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/17$595
This oojo deal was found by Cheapflights users on 3/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:10 pm
SEA
-
SOF
1 stop15h 05m
Turkish Airlines
Thu 5/289:35 am
SOF
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/17$596
This oojo deal was found by Cheapflights users on 3/13. 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.
Fri 4/107:10 pm
SEA
-
SOF
1 stop32h 05m
Turkish Airlines
Fri 4/179:35 am
SOF
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/13$606
This FlightHub deal was found by Cheapflights users on 3/15. 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 3/248:00 pm
SEA
-
SOF
1 stop15h 50m
Turkish Airlines
Tue 4/289:35 am
SOF
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/15$611
This Gotogate deal was found by Cheapflights users on 3/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Wed 11/256:10 am
SOF
-
SEA
2 stops25h 46m
Multiple Airlines
Deal found 3/16$620
This Turkish Airlines deal was found by Cheapflights users on 3/15. 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 4/17:10 pm
SEA
-
SOF
1 stop33h 50m
Turkish Airlines
Wed 4/83:50 pm
SOF
-
SEA
1 stop35h 25m
Turkish Airlines
Deal found 3/15$624
This oojo deal was found by Cheapflights users on 3/12. 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.
Sat 9/512:35 pm
SEA
-
SOF
1 stop14h 40m
Turkish Airlines
Tue 9/159:35 am
SOF
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/12$636
This FlightHub deal was found by Cheapflights users on 3/15. 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 8/27:10 pm
SEA
-
VAR
1 stop27h 35m
Turkish Airlines
Tue 9/159:35 am
VAR
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/15$640
This oojo deal was found by Cheapflights users on 3/15. 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.
Wed 4/297:10 pm
SEA
-
VAR
1 stop16h 10m
Turkish Airlines
Wed 5/610:10 pm
VAR
-
SEA
1 stop29h 05m
Turkish Airlines
Deal found 3/15$645
This FlightHub deal was found by Cheapflights users on 3/15. 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.
Mon 5/47:10 pm
SEA
-
VAR
1 stop27h 35m
Turkish Airlines
Mon 5/1110:10 pm
VAR
-
SEA
1 stop29h 05m
Turkish Airlines
Deal found 3/15$652
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/87:10 pm
SEA
-
VAR
1 stop16h 10m
Turkish Airlines
Wed 4/229:35 am
VAR
-
SEA
1 stop17h 40m
Turkish Airlines
Deal found 3/14$665
This FlightHub deal was found by Cheapflights users on 3/14. 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 4/97:10 pm
SEA
-
VAR
1 stop21h 45m
Turkish Airlines
Thu 4/2310:10 pm
VAR
-
SEA
1 stop29h 05m
Turkish Airlines
Deal found 3/14$698

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$596
(oojo)

One-way from

$286
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$654
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. 19% potential increase in price ($181 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 March 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 March 17, 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
Quickest round-trip

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 4/16

7:10 pm-8:15 pm

1 stop15h 05m

Sofia

Sun 4/26

9:35 am-5:15 pm

1 stop17h 40m

$624

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Mon 5/4

7:10 pm-8:45 am

1 stop27h 35m

Varna

Mon 5/11

10:10 pm-5:15 pm

1 stop29h 05m

$652

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/6

7:06 am-11:00 pm

2 stops29h 54m

Sofia

Tue 9/22

6:10 am-10:42 pm

2 stops26h 32m

$669

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/6

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Tue 9/22

6:10 am-2:22 pm

2 stops18h 12m

$707

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 8/13

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Thu 8/20

6:30 am-8:43 pm

2 stops24h 13m

$707

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 4/8

7:10 pm-9:20 pm

1 stop16h 10m

Varna

Fri 4/24

9:35 am-5:15 pm

1 stop17h 40m

$710

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sun 4/12

7:10 pm-8:45 am

1 stop27h 35m

Varna

Fri 4/24

9:35 am-5:15 pm

1 stop17h 40m

$710

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Thu 4/9

7:10 pm-2:55 am

1 stop21h 45m

Varna

Fri 4/24

9:35 am-5:15 pm

1 stop17h 40m

$710

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 4/12

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Thu 4/23

6:30 am-11:27 pm

3 stops26h 57m

$717

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 5/17

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Thu 6/4

6:30 am-12:20 pm

1 stop15h 50m

$740

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 38 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, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $510). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $925). 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 March 17, 2026.
Read reviews from past customers who have flown KLM,Air France, andUnited 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
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,473 reviews
KLM
7.8
Good
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Air France
7.4
Good
1,546 reviews
KLM
7.8
Good
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
United Airlines
7.4
Good
9,433 reviews
KLM
7.8
Good
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Turkish Airlines
7.3
Good
4,258 reviews
KLM
7.8
Good
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,858 reviews
KLM
7.8
Good
1,473 reviews

Overall

7.8

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 05m. Turkish Airlines provides one of the quickest options available for as low as $624. 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, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $510). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $925). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$538Average$859FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$541Average$1,073FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$587Average$847FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$620Average$840FlexibilityNo cancel feeOn-time69%

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