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$409+ Cheap flights from Sofia (SOF) to Seattle (SEA)

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/5. 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 6/134:55 pm
SOF
-
SEA
2 stops30h 50m
Multiple Airlines
Tue 7/146:50 pm
SEA
-
SOF
1 stop18h 10m
Multiple Airlines
Deal found 3/5$855
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:30 am
SOF
-
SEA
1 stop15h 50m
Lufthansa
Fri 4/242:39 pm
SEA
-
SOF
2 stops18h 01m
Lufthansa
Deal found 3/8$913
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Thu 4/96:30 am
SOF
-
SEA
1 stop15h 50m
United Airlines
Fri 4/246:50 pm
SEA
-
SOF
1 stop18h 10m
United Airlines
Deal found 3/8$916
This United Airlines deal was found by Cheapflights users on 3/5. 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.
Thu 3/196:00 am
SOF
-
SEA
1 stop16h 10m
United Airlines
Wed 4/16:50 pm
SEA
-
SOF
1 stop13h 50m
United Airlines
Deal found 3/5$918
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Thu 4/236:30 am
SOF
-
SEA
1 stop15h 50m
United Airlines
Thu 5/285:40 am
SEA
-
SOF
2 stops26h 45m
United Airlines
Deal found 3/6$919
This Air Canada deal was found by Cheapflights users on 3/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:30 am
SOF
-
SEA
2 stops25h 23m
Air Canada
Thu 5/2810:30 am
SEA
-
SOF
2 stops16h 50m
Air Canada
Deal found 3/9$926
This Orbitz deal was found by Cheapflights users on 3/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:30 am
SOF
-
SEA
2 stops24h 23m
Multiple Airlines
Fri 4/247:00 am
SEA
-
SOF
2 stops19h 55m
Multiple Airlines
Deal found 3/8$928
This United Airlines deal was found by Cheapflights users on 3/5. 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.
Sat 6/136:20 am
SOF
-
SEA
2 stops19h 21m
United Airlines
Tue 7/149:55 am
SEA
-
SOF
2 stops17h 10m
United Airlines
Deal found 3/5$930

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$855
(Kiwi.com)

One-way from

$409
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$863
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
One-way flight from Sofia to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($20 potential increase over avg. RT price).
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 March 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 March 10, 2026.
Use the filters below to find and compare flights from Sofia to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/9

6:30 am-12:20 pm

1 stop15h 50m

Seattle/Tacoma Intl

Fri 4/24

6:50 pm-11:00 pm

1 stop18h 10m

$916
Quickest round-trip

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

6:30 am-12:20 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 5/28

6:50 pm-6:40 pm

1 stop13h 50m

$916

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

6:30 am-9:53 pm

2 stops25h 23m

Seattle/Tacoma Intl

Thu 5/28

10:30 am-1:20 pm

2 stops16h 50m

$926

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 6/13

6:20 am-3:41 pm

2 stops19h 21m

Seattle/Tacoma Intl

Tue 7/14

9:55 am-1:05 pm

2 stops17h 10m

$930

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 4/17

7:00 am-10:50 pm

3 stops25h 50m

Seattle/Tacoma Intl

Fri 5/1

7:00 pm-1:50 pm

3 stops32h 50m

$950

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 4/17

6:20 am-12:20 pm

1 stop16h 00m

Seattle/Tacoma Intl

Fri 5/1

6:50 pm-11:00 pm

1 stop18h 10m

$951

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 4/17

6:20 am-12:20 pm

1 stop16h 00m

Seattle/Tacoma Intl

Fri 5/1

8:10 am-12:10 pm

2 stops18h 00m

$952
Cheapest one-way

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sun 4/5

6:55 pm-11:32 am

3 stops50h 37m

$415

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/2

7:30 pm-10:40 am

3 stops49h 10m

$468

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 7/15

1:50 pm-10:38 am

3 stops54h 48m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 14 resultsSorted by cheapest first
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, April is the cheapest month in which you can book a flight from Sofia to Seattle (average of $799). Flying from Sofia to Seattle in January is currently the most expensive (average of $988). 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 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 March 10, 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
4,249 reviews

Comfort

7.3

Entertainment

7.5

Boarding

7.3

Food

7.5

Overall

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Muhammad,Jan 2026

ORD - DFW

Great, customer service agent at O’hare was able to change the flight due to snow storm. Thank you
Turkish Airlines
7.3
Good
4,249 reviews
Turkish Airlines
7.3
Good
4,249 reviews

Comfort

7.3

Entertainment

7.5

Boarding

7.3

Food

7.5

Overall

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Muhammad,Jan 2026

ORD - DFW

Great, customer service agent at O’hare was able to change the flight due to snow storm. Thank you
Lufthansa
6.8
Okay
7,840 reviews
Turkish Airlines
7.3
Good
4,249 reviews

Comfort

7.3

Entertainment

7.5

Boarding

7.3

Food

7.5

Overall

7.3

Crew

7.8

Reviews

1 / 20
8.0
Excellent

Muhammad,Jan 2026

ORD - DFW

Great, customer service agent at O’hare was able to change the flight due to snow storm. Thank you

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 United Airlines and Air Canada fly from Sofia to Seattle in about 15h 50m. The time it takes to get you to your destination can typically vary by up to 9h 33m. Sofia and Seattle are separated by a distance of 5862 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $831, 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 $854. Lufthansa is priced at 12% 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, April is the cheapest month in which you can book a flight from Sofia to Seattle (average of $799). Flying from Sofia to Seattle in January is currently the most expensive (average of $988). 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
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis

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 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$831Average$906FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$854Average$978FlexibilityNo cancel feeOn-time77%

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