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$406+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Sofia to Seattle

Best flights from Sofia to Seattle
Discover carefully curated flight deals from Sofia to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/97:00 amSOF - SEA
1 stop14h 50mMultiple Airlines
Thu 1/221:40 pmSEA - SOF
1 stop14h 15mMultiple Airlines
Deal found 12/17$897
This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 amSOF - SEA
1 stop19h 30mKLM
Thu 4/305:35 pmSEA - SOF
1 stop34h 25mKLM
Deal found 12/16$900
This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/157:00 amSOF - SEA
1 stop14h 50mMultiple Airlines
Thu 1/291:40 pmSEA - SOF
1 stop14h 15mMultiple Airlines
Deal found 12/16$897
This KLM deal was found by Cheapflights users on 12/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 amSOF - SEA
1 stop19h 30mKLM
Fri 5/19:30 amSEA - SOF
2 stops18h 30mKLM
Deal found 12/16$905
This Air France deal was found by Cheapflights users on 12/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/127:00 amSOF - SEA
1 stop16h 25mMultiple Airlines
Mon 4/201:45 pmSEA - SOF
1 stop14h 15mMultiple Airlines
Deal found 12/17$907
This KLM deal was found by Cheapflights users on 12/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:00 amSOF - SEA
2 stops17h 55mKLM
Fri 5/19:30 amSEA - SOF
2 stops18h 30mKLM
Deal found 12/17$915
This KLM deal was found by Cheapflights users on 12/18. 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.
Sun 2/87:00 amSOF - SEA
2 stops21h 23mMultiple Airlines
Mon 2/168:00 amSEA - SOF
2 stops20h 05mMultiple Airlines
Deal found 12/18$913

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$857
(Mytrip)

One-way from

$406
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$987
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 ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
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

Fri 1/9

7:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Thu 1/22

1:40 pm-1:55 pm

1 stop14h 15m

$897

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 1/15

7:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Thu 1/29

1:40 pm-1:55 pm

1 stop14h 15m

$897

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 4/8

7:00 am-4:30 pm

1 stop19h 30m

Seattle/Tacoma Intl

Thu 4/30

5:35 pm-2:00 pm

1 stop34h 25m

$900

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 4/8

7:00 am-4:30 pm

1 stop19h 30m

Seattle/Tacoma Intl

Fri 5/1

9:30 am-2:00 pm

2 stops18h 30m

$905

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 1/12

7:00 am-1:25 pm

1 stop16h 25m

Seattle/Tacoma Intl

Mon 4/20

1:45 pm-2:00 pm

1 stop14h 15m

$907

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sun 2/8

7:00 am-6:23 pm

2 stops21h 23m

Seattle/Tacoma Intl

Mon 2/16

8:00 am-2:05 pm

2 stops20h 05m

$913

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/9

7:00 am-2:55 pm

2 stops17h 55m

Seattle/Tacoma Intl

Fri 5/1

9:30 am-2:00 pm

2 stops18h 30m

$915

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 1/15

8:00 pm-10:22 am

3 stops48h 22m

$406

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 1/15

6:00 am-12:10 pm

1 stop16h 10m

$802

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 1/15

9:35 am-5:05 pm

1 stop17h 30m

$828

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 12 results
1
2

Compare providers for flights from Sofia to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sofia to Seattle in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sofia-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Sofia-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, May is the cheapest month in which you can book a flight from Sofia to Seattle (average of $778). Flying from Sofia to Seattle in November is currently the most expensive (average of $876). 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.

What is the cheapest time of day to fly from SOF to SEA?

Find hourly flight availability from Sofia to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight at noon.

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 December 18, 2025.
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
4,105 reviews

Entertainment

7.4

Crew

7.8

Overall

7.3

Boarding

7.3

Food

7.4

Comfort

7.3

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
4,105 reviews
Turkish Airlines
7.3
Good
4,105 reviews

Entertainment

7.4

Crew

7.8

Overall

7.3

Boarding

7.3

Food

7.4

Comfort

7.3

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
7,635 reviews
Turkish Airlines
7.3
Good
4,105 reviews

Entertainment

7.4

Crew

7.8

Overall

7.3

Boarding

7.3

Food

7.4

Comfort

7.3

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 19h 30m. 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 $791, 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 $824. Lufthansa is priced at 12% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Sofia to Seattle one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $731. United Airlines flights start at $794 while deals on Turkish Airlines start at $816 one-way.

  • 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, May is the cheapest month in which you can book a flight from Sofia to Seattle (average of $778). Flying from Sofia to Seattle in November is currently the most expensive (average of $876). 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
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Lakewood
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Olympia
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Puyallup
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Kent
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Federal Way

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$878FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$824Average$921FlexibilityNo cancel feeOn-time77%

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