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$433+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 2025.

Round-trip from

$777
(Mytrip)

One-way from

$433
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$951
From Sofia to Seattle/Tacoma Intl
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One-way flight from Sofia to Seattle/Tacoma Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/305:00 amSOF - SEA
3 stops22h 00mMultiple Airlines
Thu 11/62:35 pmSEA - SOF
3 stops26h 25mMultiple Airlines
Deal found 9/15$777
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:40 pmSOF - SEA
1 stop29h 25mTurkish Airlines
Sun 11/167:00 pmSEA - SOF
1 stop34h 10mTurkish Airlines
Deal found 9/14$792
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:25 pmSOF - SEA
1 stop28h 05mBritish Airways
Tue 11/256:50 pmSEA - SOF
1 stop15h 20mBritish Airways
Deal found 9/15$798
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:25 pmSOF - SEA
1 stop28h 05mAmerican Airlines
Mon 11/2412:59 amSEA - SOF
2 stops33h 11mAmerican Airlines
Deal found 9/15$800
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:00 pmSOF - SEA
2 stops34h 46mAmerican Airlines
Tue 11/41:35 pmSEA - SOF
2 stops20h 35mAmerican Airlines
Deal found 9/14$810
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/112:05 pmSOF - SEA
2 stops32h 39mAmerican Airlines
Sun 11/1611:42 amSEA - SOF
2 stops18h 38mAmerican Airlines
Deal found 9/14$827
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:00 pmSOF - SEA
1 stop25h 10mBritish Airways
Sun 10/196:10 amSEA - SOF
2 stops27h 00mBritish Airways
Deal found 9/14$829
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amSOF - SEA
1 stop14h 50mMultiple Airlines
Wed 10/221:30 pmSEA - SOF
1 stop14h 30mMultiple Airlines
Deal found 9/15$831
This British Airways deal was found by Cheapflights users on 9/14. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:00 pmSOF - SEA
1 stop25h 10mBritish Airways
Fri 10/2410:39 amSEA - SOF
2 stops41h 21mBritish Airways
Deal found 9/14$834
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amSOF - SEA
1 stop14h 50mMultiple Airlines
Tue 10/219:25 amSEA - SOF
2 stops18h 35mMultiple Airlines
Deal found 9/15$836
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amSOF - SEA
1 stop19h 05mKLM
Tue 10/215:40 pmSEA - SOF
1 stop34h 20mKLM
Deal found 9/15$837
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:00 amSOF - SEA
1 stop14h 50mKLM
Wed 10/229:29 amSEA - SOF
2 stops18h 31mKLM
Deal found 9/15$841

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 September 15, 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

Mon 11/10

5:25 pm-11:30 am

1 stop28h 05m

Seattle/Tacoma Intl

Tue 11/25

6:50 pm-8:10 pm

1 stop15h 20m

$798

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 11/10

5:25 pm-8:39 pm

2 stops37h 14m

Seattle/Tacoma Intl

Tue 11/25

11:42 am-8:10 pm

2 stops22h 28m

$810

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 10/13

8:00 pm-11:10 am

1 stop25h 10m

Seattle/Tacoma Intl

Sun 10/19

6:10 am-7:10 pm

2 stops27h 00m

$829

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 10/13

7:00 am-4:05 pm

1 stop19h 05m

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-2:00 pm

1 stop14h 30m

$831

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 10/14

7:00 am-4:05 pm

1 stop19h 05m

Seattle/Tacoma Intl

Wed 10/22

1:30 pm-2:00 pm

1 stop14h 30m

$831

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 10/30

7:00 am-12:45 pm

1 stop14h 45m

Seattle/Tacoma Intl

Thu 11/6

1:40 pm-1:55 pm

1 stop14h 15m

$831

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 10/13

8:00 pm-12:27 am

2 stops38h 27m

Seattle/Tacoma Intl

Thu 10/23

1:30 pm-1:30 pm

1 stop14h 00m

$834

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 10/13

8:00 pm-8:46 pm

2 stops34h 46m

Seattle/Tacoma Intl

Sat 10/18

2:52 pm-7:10 pm

2 stops42h 18m

$834

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 10/13

8:00 pm-11:10 am

1 stop25h 10m

Seattle/Tacoma Intl

Fri 10/24

10:39 am-2:00 pm

2 stops41h 21m

$834

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 10/14

7:00 am-4:05 pm

1 stop19h 05m

Seattle/Tacoma Intl

Tue 10/21

9:25 am-2:00 pm

2 stops18h 35m

$836

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 14 results
1
2

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, January is the cheapest month in which you can book a flight from Sofia to Seattle (average of $238). Flying from Sofia to Seattle in June is currently the most expensive (average of $387). 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 September 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Sofia to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the morning.

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 September 15, 2025.
Read through reviews of airlines operating flights from Sofia to Seattle, such as United Airlines, Turkish Airlines, and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Turkish Airlines
7.3
Good
3,968 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Lufthansa
6.8
Okay
7,407 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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 British Airways and American Airlines fly from Sofia to Seattle in about 28h 05m. The time it takes to get you to your destination can typically vary by up to 9h 09m. 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 $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. Search Cheapflights for deals from United Airlines and Turkish Airlines - these airlines can fly you to your destination from $795 and $824, respectively. 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, January is the cheapest month in which you can book a flight from Sofia to Seattle (average of $238). Flying from Sofia to Seattle in June is currently the most expensive (average of $387). 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?

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Alternative routes for Sofia to Seattle

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Sofia to Portland flights

Top 3 airlines flying from Sofia to Seattle

Discover the top 3 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$876FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$795Average$836FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$824Average$945FlexibilityNo cancel feeOn-time77%

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