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$623+ Cheap flights from Sofia (SOF) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap flight deals from Sofia to Seattle

Cheapest flights from Sofia to Seattle
Explore the most affordable flight options available from Sofia to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 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.
Sat 3/77:15 pm
SOF
-
SEA
2 stops54h 54m
Multiple Airlines
Sun 3/154:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Deal found 1/19$623
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.
Thu 3/57:00 pm
SOF
-
SEA
2 stops37h 54m
Multiple Airlines
Sun 3/154:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Deal found 1/19$634
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.
Sat 3/77:15 pm
SOF
-
SEA
2 stops54h 54m
Multiple Airlines
Mon 3/163:00 pm
SEA
-
SOF
1 stop13h 25m
Multiple Airlines
Deal found 1/19$636
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.
Thu 3/57:00 pm
SOF
-
SEA
2 stops37h 54m
Multiple Airlines
Mon 3/163:00 pm
SEA
-
SOF
1 stop13h 25m
Multiple Airlines
Deal found 1/19$646
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.
Mon 3/95:45 am
SOF
-
SEA
2 stops37h 52m
Multiple Airlines
Sun 3/154:10 pm
SEA
-
SOF
1 stop21h 35m
Multiple Airlines
Deal found 1/19$654
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.
Mon 3/95:45 am
SOF
-
SEA
2 stops37h 52m
Multiple Airlines
Mon 3/163:00 pm
SEA
-
SOF
1 stop13h 25m
Multiple Airlines
Deal found 1/19$666
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.
Fri 3/66:00 am
SOF
-
SEA
2 stops26h 54m
Multiple Airlines
Sun 3/154:10 pm
SEA
-
SOF
1 stop17h 10m
Multiple Airlines
Deal found 1/19$668
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 4/159:40 pm
SOF
-
SEA
2 stops35h 36m
Multiple Airlines
Sun 5/36:50 pm
SEA
-
SOF
1 stop18h 20m
Multiple Airlines
Deal found 1/19$679
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 4/159:40 pm
SOF
-
SEA
2 stops35h 36m
Multiple Airlines
Wed 4/296:50 pm
SEA
-
SOF
1 stop13h 50m
Multiple Airlines
Deal found 1/19$680
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.
Fri 3/66:00 am
SOF
-
SEA
2 stops26h 54m
Multiple Airlines
Mon 3/163:00 pm
SEA
-
SOF
1 stop13h 25m
Multiple Airlines
Deal found 1/19$682
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 4/159:40 pm
SOF
-
SEA
2 stops35h 36m
Multiple Airlines
Tue 5/52:10 pm
SEA
-
SOF
1 stop17h 50m
Multiple Airlines
Deal found 1/19$693
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.
Thu 3/57:00 pm
SOF
-
SEA
2 stops37h 54m
Multiple Airlines
Thu 3/123:00 pm
SEA
-
SOF
1 stop13h 50m
Multiple Airlines
Deal found 1/19$698

Find flight deals from Sofia to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sofia (SOF) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$623
(Kiwi.com)

Popular in

July

Cheapest in

June

Average price

$990
Provider with most accurate pricing for Sofia-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sofia-Seattle/Tacoma Intl flights.
Search Deals
From Sofia to Seattle/Tacoma Intl
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sofia to Seattle 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 20, 2026.
Use the filters below to find and compare flights from Sofia to Seattle that are best for you.

Fly from

Sofia

Fly to

Seattle

Route

Depart

Return

Price

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 4/6

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Sun 4/19

9:00 am-2:00 pm

2 stops19h 00m

$815

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Thu 5/28

1:30 pm-2:00 pm

1 stop14h 30m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sun 4/19

7:00 am-4:23 pm

2 stops19h 23m

Seattle/Tacoma Intl

Sun 5/3

6:40 pm-2:00 pm

1 stop33h 20m

$818

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 4/1

9:25 pm-11:13 pm

2 stops35h 48m

Seattle/Tacoma Intl

Mon 4/6

1:37 pm-8:30 pm

2 stops44h 53m

$825

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Thu 5/28

9:30 am-2:00 pm

2 stops18h 30m

$825

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 4/15

9:25 pm-10:26 pm

2 stops35h 01m

Seattle/Tacoma Intl

Sat 5/2

1:29 pm-7:20 pm

2 stops43h 51m

$825

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 4/20

8:10 pm-10:26 pm

2 stops36h 16m

Seattle/Tacoma Intl

Sat 5/2

1:29 pm-7:20 pm

2 stops43h 51m

$825

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 4/8

9:25 pm-10:26 pm

2 stops35h 01m

Seattle/Tacoma Intl

Sun 4/19

1:29 pm-7:20 pm

2 stops19h 51m

$825

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 3/7

7:00 am-8:46 pm

2 stops23h 46m

Seattle/Tacoma Intl

Sun 3/15

9:00 am-2:05 pm

2 stops20h 05m

$827

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 3/6

7:00 am-8:00 pm

2 stops23h 00m

Seattle/Tacoma Intl

Sun 3/15

9:00 am-2:05 pm

2 stops20h 05m

$827

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on Sofia-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sofia-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sofia-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sofia-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sofia-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sofia to Seattle

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

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

Currently, February is the cheapest month in which you can book a flight from Sofia to Seattle (average of $791). Flying from Sofia to Seattle in May is currently the most expensive (average of $950). 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 much does it cost to fly round-trip from Sofia to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated January 20, 2026.
Read through reviews of airlines operating flights from Sofia to Seattle, such as Turkish Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Turkish Airlines
7.3
Good
4,196 reviews

Crew

7.8

Comfort

7.3

Food

7.4

Boarding

7.3

Overall

7.3

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.
Turkish Airlines
7.3
Good
4,196 reviews
Turkish Airlines
7.3
Good
4,196 reviews

Crew

7.8

Comfort

7.3

Food

7.4

Boarding

7.3

Overall

7.3

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.
Lufthansa
6.8
Okay
7,732 reviews
Turkish Airlines
7.3
Good
4,196 reviews

Crew

7.8

Comfort

7.3

Food

7.4

Boarding

7.3

Overall

7.3

Entertainment

7.4

Reviews

1 / 20
2.0
Mediocre

Joel,Nov 2025

IST - IAD

The flight was fine except half the bathrooms in economy class were out of order and taped shut. Turkish Airlines had changed or ultimately canceled the flight to Istanbul several times and the vendor that kayak uses to purchase the tickets then canceled our reservations without informing us. When I called for a boarding pass 24 hours before the flight, we found out that our reservations have been canceled and had to act quickly to get new reservations at double the expense… Using the same vendor who had gotten reimbursed for the original flights.

Related info for your journey

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

    Airlines like KLM fly from Sofia to Seattle in about 14h 45m. The time it takes to get you to your destination can typically vary by up to . Sofia and Seattle are separated by a distance of 5862 mi.

  • What are the cheapest airlines flying from Sofia to Seattle round-trip?

    Currently priced at $796, Lufthansa will fly you from Sofia to Seattle and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Turkish Airlines for as low as $844. Lufthansa is priced at 14% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Sofia to Seattle (average of $791). Flying from Sofia to Seattle in May is currently the most expensive (average of $950). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sofia to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Sofia to Portland flights

Top 2 airlines flying from Sofia to Seattle

Discover the top 2 airlines that operate flights from Sofia to Seattle. 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 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$796Average$887FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$844Average$972FlexibilityNo cancel feeOn-time77%

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