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$809+ 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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Aug 26 — Sep 21
Tue 8/26
Tue 9/2
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 August 21, 2025.

Round-trip from

$809
(Gotogate)

Popular in

March

Cheapest in

February

Average price

$891
From Sofia to Seattle/Tacoma Intl
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 0% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 21, 2025.

This Gotogate deal was found by Cheapflights users on 8/20. 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.
Thu 12/116:00 amSOF - SEA
2 stops23h 16mMultiple Airlines
Mon 12/155:50 amSEA - SOF
2 stops30h 55mMultiple Airlines
Deal found 8/20$809
This Justfly.com deal was found by Cheapflights users on 8/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:15 pmSOF - SEA
1 stop23h 20mTurkish Airlines
Thu 10/167:10 pmSEA - SOF
1 stop33h 35mTurkish Airlines
Deal found 8/21$813
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Wed 9/106:15 amSOF - SEA
1 stop15h 40mUnited Airlines
Mon 9/223:36 pmSEA - SOF
2 stops21h 24mUnited Airlines
Deal found 8/21$816
This United Airlines deal was found by Cheapflights users on 8/21. 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 9/116:15 amSOF - SEA
2 stops26h 01mUnited Airlines
Tue 9/162:20 pmSEA - SOF
1 stop17h 30mUnited Airlines
Deal found 8/21$817
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Tue 9/96:20 amSOF - SEA
2 stops22h 16mUnited Airlines
Thu 9/188:00 amSEA - SOF
2 stops28h 50mUnited Airlines
Deal found 8/21$818
This oojo deal was found by Cheapflights users on 8/20. 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.
Mon 9/159:15 pmSOF - SEA
1 stop23h 20mTurkish Airlines
Fri 9/267:10 pmSEA - SOF
1 stop33h 35mTurkish Airlines
Deal found 8/20$821
This United Airlines deal was found by Cheapflights users on 8/21. 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.
Fri 9/126:15 amSOF - SEA
2 stops24h 27mUnited Airlines
Wed 9/177:00 amSEA - SOF
2 stops24h 50mUnited Airlines
Deal found 8/21$822
This KLM deal was found by Cheapflights users on 8/21. 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 9/117:00 amSOF - SEA
1 stop19h 05mKLM
Thu 9/185:40 pmSEA - SOF
1 stop34h 20mKLM
Deal found 8/21$834
This Lufthansa deal was found by Cheapflights users on 8/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:00 pmSOF - SEA
1 stop33h 55mLufthansa
Thu 10/1610:00 amSEA - SOF
2 stops17h 05mLufthansa
Deal found 8/21$837
This KLM deal was found by Cheapflights users on 8/21. 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 9/117:00 amSOF - SEA
2 stops19h 40mKLM
Fri 9/191:55 pmSEA - SOF
1 stop14h 05mKLM
Deal found 8/21$839
This KLM deal was found by Cheapflights users on 8/20. 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 9/157:00 amSOF - SEA
1 stop19h 05mKLM
Fri 9/2610:25 amSEA - SOF
2 stops17h 35mKLM
Deal found 8/20$840
This Booking.com deal was found by Cheapflights users on 8/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:00 amSOF - SEA
2 stops20h 49mMultiple Airlines
Thu 10/1610:00 amSEA - SOF
2 stops17h 05mMultiple Airlines
Deal found 8/21$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 August 21, 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

Thu 12/11

6:00 am-7:16 pm

2 stops23h 16m

Seattle/Tacoma Intl

Mon 12/15

5:50 am-10:45 pm

2 stops30h 55m

$809

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 10/3

9:15 pm-10:35 am

1 stop23h 20m

Seattle/Tacoma Intl

Thu 10/16

7:10 pm-2:45 pm

1 stop33h 35m

$813

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 9/12

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Tue 9/16

5:02 am-11:00 pm

2 stops31h 58m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 9/13

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Tue 9/16

7:00 am-11:00 pm

2 stops30h 00m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 9/12

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Sun 9/21

5:02 am-11:00 pm

2 stops31h 58m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 9/12

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Mon 9/22

2:29 pm-11:00 pm

2 stops22h 31m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 9/13

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Sun 9/21

7:00 am-11:00 pm

2 stops30h 00m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 9/10

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Sun 9/21

7:00 am-11:00 pm

2 stops30h 00m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 9/10

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Tue 9/16

5:35 pm-11:00 pm

2 stops19h 25m

$816

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 9/10

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Mon 9/22

3:36 pm-11:00 pm

2 stops21h 24m

$816

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/20

Showing 1-10 of 12 results
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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 $388). 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 August 21, 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.

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 August 21, 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
8,930 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,930 reviews
United Airlines
7.4
Good
8,930 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Turkish Airlines
7.3
Good
3,950 reviews
United Airlines
7.4
Good
8,930 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Lufthansa
6.8
Okay
7,344 reviews
United Airlines
7.4
Good
8,930 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 Turkish Airlines and United Airlines fly from Sofia to Seattle in about 15h 40m. The time it takes to get you to your destination can typically vary by up to 7h 40m. 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 13% 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 $388). 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
SeaTac
Tukwila
Tacoma
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Ocean Shores
Lynnwood
Leavenworth
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Olympia
Kent
Cle Elum
Puyallup
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Federal Way
Shelton

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 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 August 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$877FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$795Average$836FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$824Average$937FlexibilityNo cancel feeOn-time77%

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