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$556+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$869
(United Airlines)

One-way from

$556
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,084
From Sofia to Seattle/Tacoma Intl
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One-way flight from Sofia to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($61 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/1. 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 10/16:15 amSOF - SEA
2 stops18h 01mUnited Airlines
Fri 10/106:50 pmSEA - SOF
1 stop18h 10mUnited Airlines
Deal found 7/1$869
This Booking.com deal was found by Cheapflights users on 7/1. 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.
Mon 7/216:15 amSOF - SEA
2 stops24h 26mMultiple Airlines
Sun 8/36:50 pmSEA - SOF
1 stop18h 10mMultiple Airlines
Deal found 7/1$878
This Orbitz deal was found by Cheapflights users on 7/1. 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.
Wed 10/16:15 amSOF - SEA
1 stop15h 40mLufthansa
Fri 10/106:50 pmSEA - SOF
1 stop18h 10mLufthansa
Deal found 7/1$879
This Booking.com deal was found by Cheapflights users on 7/1. 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.
Mon 7/216:15 amSOF - SEA
2 stops24h 26mAir Canada
Sun 8/312:05 pmSEA - SOF
2 stops37h 10mAir Canada
Deal found 7/1$882
This Air France deal was found by Cheapflights users on 6/30. 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.
Fri 11/77:00 amSOF - SEA
1 stop16h 15mAir France
Tue 11/111:40 pmSEA - SOF
1 stop14h 15mAir France
Deal found 6/30$1,033

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 July 3, 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

Wed 10/1

6:15 am-2:16 pm

2 stops18h 01m

Seattle/Tacoma Intl

Fri 10/10

6:50 pm-11:00 pm

1 stop18h 10m

$869

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 7/21

6:15 am-8:41 pm

2 stops24h 26m

Seattle/Tacoma Intl

Sun 8/3

6:50 pm-11:00 pm

1 stop18h 10m

$878

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 10/1

6:15 am-11:55 am

1 stop15h 40m

Seattle/Tacoma Intl

Fri 10/10

6:50 pm-11:00 pm

1 stop18h 10m

$879

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 7/21

6:15 am-8:41 pm

2 stops24h 26m

Seattle/Tacoma Intl

Sun 8/3

12:05 pm-11:15 am

2 stops37h 10m

$882

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 11/7

7:00 am-1:15 pm

1 stop16h 15m

Seattle/Tacoma Intl

Tue 11/11

1:40 pm-1:55 pm

1 stop14h 15m

$1,033

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 7/22

6:55 am-10:38 am

3 stops37h 43m

$556

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 7/24

6:40 pm-4:59 pm

2 stops32h 19m

$794

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 8/1

1:30 pm-12:45 pm

1 stop33h 15m

$876

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 8/2

9:25 am-5:15 pm

1 stop17h 50m

$920

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 7/26

2:05 pm-11:50 am

3 stops31h 45m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

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 July is currently the most expensive (average of $390). 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 July 3, 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 July 3, 2025.
Read through reviews of airlines operating flights from Sofia to Seattle, such as Air France, Qatar Airways, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Air France
7.5
Good
1,465 reviews
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Qatar Airways
7.4
Good
3,594 reviews
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
United Airlines
7.4
Good
8,861 reviews
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Turkish Airlines
7.3
Good
3,895 reviews
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.
Air Canada
7.1
Good
9,681 reviews
Air France
7.5
Good
1,465 reviews

Overall

7.5

Crew

8.2

Entertainment

7.0

Boarding

7.4

Food

7.0

Comfort

7.4

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

SGN - CDG

Staff attentive, would have liked a covering on the seats for sleeping (as Vietnam airways did - and others) ‘duvet’ cover very light- needed but heavier. Food not great, scallop did not smell right, chicken over cooked.

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.

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

    Currently priced at $869, United Airlines will fly you from Sofia to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and Air Canada - these airlines can fly you to your destination from $879 and $882, respectively. United Airlines is priced at 6% 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 $794. Qatar Airways flights start at $876 while deals on Turkish Airlines start at $920 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, 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 July is currently the most expensive (average of $390). 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 Sofia?

Book flights to Sofia if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$867FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$795Average$836FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$824Average$935FlexibilityNo cancel feeOn-time77%

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