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$853+ 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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
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 June 18, 2025.

Round-trip from

$853
(Priceline)

Popular in

July

Cheapest in

February

Average price

$837
From Sofia to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($62 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 June 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 June 18, 2025.

This Priceline deal was found by Cheapflights users on 6/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/308:00 pmSOF - SEA
1 stop25h 10mBritish Airways
Tue 7/158:20 pmSEA - SOF
1 stop14h 20mBritish Airways
Deal found 6/17$853
This United Airlines deal was found by Cheapflights users on 6/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/166:15 amSOF - SEA
2 stops37h 06mUnited Airlines
Wed 8/67:00 amSEA - SOF
2 stops30h 00mUnited Airlines
Deal found 6/18$854
This oojo deal was found by Cheapflights users on 6/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/163:35 pmSOF - SEA
1 stop29h 00mTurkish Airlines
Wed 8/67:10 pmSEA - SOF
1 stop27h 25mTurkish Airlines
Deal found 6/16$865
This Lufthansa deal was found by Cheapflights users on 6/18. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/186:00 amSOF - SEA
1 stop20h 59mLufthansa
Sun 8/32:20 pmSEA - SOF
1 stop22h 30mLufthansa
Deal found 6/18$881
This Air Canada deal was found by Cheapflights users on 6/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/196:00 amSOF - SEA
2 stops26h 16mAir Canada
Sat 8/912:05 pmSEA - SOF
2 stops37h 10mAir Canada
Deal found 6/18$890
This SWISS deal was found by Cheapflights users on 6/18. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1910:50 amSOF - SEA
1 stop14h 00mSWISS
Mon 8/412:40 pmSEA - SOF
2 stops59h 25mSWISS
Deal found 6/18$1,034
This Austrian Airlines deal was found by Cheapflights users on 6/17. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/134:05 pmSOF - SEA
2 stops36h 53mAustrian Airlines
Mon 8/47:00 amSEA - SOF
2 stops30h 55mAustrian Airlines
Deal found 6/17$1,065
This Mytrip deal was found by Cheapflights users on 6/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/113:05 pmSOF - SEA
2 stops29h 30mMultiple Airlines
Tue 7/293:45 pmSEA - SOF
3 stops34h 15mMultiple Airlines
Deal found 6/17$1,101
This American Airlines deal was found by Cheapflights users on 6/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/238:00 pmSOF - SEA
1 stop25h 10mAmerican Airlines
Sun 7/201:30 pmSEA - SOF
1 stop19h 40mAmerican Airlines
Deal found 6/16$1,526

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 June 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

Mon 6/30

8:00 pm-11:10 am

1 stop25h 10m

Seattle/Tacoma Intl

Tue 7/15

8:20 pm-8:40 pm

1 stop14h 20m

$853

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 7/16

6:15 am-9:21 am

2 stops37h 06m

Seattle/Tacoma Intl

Wed 8/6

7:00 am-11:00 pm

2 stops30h 00m

$854

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 7/16

3:35 pm-10:35 am

1 stop29h 00m

Seattle/Tacoma Intl

Wed 8/6

7:10 pm-8:35 am

1 stop27h 25m

$865

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 7/18

6:00 am-4:59 pm

1 stop20h 59m

Seattle/Tacoma Intl

Sun 8/3

2:20 pm-10:50 pm

1 stop22h 30m

$881

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 7/19

6:00 am-10:16 pm

2 stops26h 16m

Seattle/Tacoma Intl

Sat 8/9

12:05 pm-11:15 am

2 stops37h 10m

$890

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sat 7/19

10:50 am-2:50 pm

1 stop14h 00m

Seattle/Tacoma Intl

Mon 8/4

12:40 pm-10:05 am

2 stops59h 25m

$1,034

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sun 7/13

4:05 pm-6:58 pm

2 stops36h 53m

Seattle/Tacoma Intl

Mon 8/4

7:00 am-11:55 pm

2 stops30h 55m

$1,065

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 7/11

3:05 pm-10:35 am

2 stops29h 30m

Seattle/Tacoma Intl

Tue 7/29

3:45 pm-12:00 pm

3 stops34h 15m

$1,101

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 9/30

3:00 pm-10:34 am

3 stops53h 34m

$1,608

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 9/30

6:20 am-11:55 am

1 stop15h 35m

$2,395

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 11 results
1
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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 $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 June 18, 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 18, 2025.
Read reviews from past customers who have flown Austrian Airlines, SWISS and United Airlines from Sofia to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
804 reviews
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
SWISS
7.5
Good
1,632 reviews
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,810 reviews
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Turkish Airlines
7.3
Good
3,853 reviews
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Air Canada
7.1
Good
9,573 reviews
Austrian Airlines
7.6
Good
804 reviews

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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 $853, British Airways will fly you from Sofia to Seattle and back. In addition to British Airways, 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 $854 and $865, respectively. British Airways is priced at 7% 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 $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
Lacey
Ocean Shores
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Cle Elum
Centralia
Kent
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$862FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$795Average$836FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$824Average$935FlexibilityNo cancel feeOn-time77%

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