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$670+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
SOF — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 12, 2025.

Round-trip from

$833
(oojo)

One-way from

$670
(Booking.com)

Popular in

July

Cheapest in

February

Average price

$837
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 ($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 12, 2025.

This British Airways deal was found by Cheapflights users on 6/11. 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.
Wed 6/189:30 pmSOF - SEA
1 stop30h 50mBritish Airways
Tue 7/158:20 pmSEA - SOF
1 stop14h 20mBritish Airways
Deal found 6/11$815
This oojo deal was found by Cheapflights users on 6/12. 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 7/169:15 pmSOF - SEA
1 stop23h 20mTurkish Airlines
Sat 8/212:30 pmSEA - SOF
1 stop16h 15mTurkish Airlines
Deal found 6/12$833
This Lufthansa deal was found by Cheapflights users on 6/11. 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.
Tue 7/226:20 amSOF - SEA
1 stop15h 35mLufthansa
Sun 8/317:00 amSEA - SOF
2 stops25h 40mLufthansa
Deal found 6/11$858
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 6/306:15 amSOF - SEA
2 stops26h 01mUnited Airlines
Tue 7/157:00 amSEA - SOF
2 stops19h 00mUnited Airlines
Deal found 6/11$864
This Travelocity deal was found by Cheapflights users on 6/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/306:15 amSOF - SEA
1 stop16h 10mMultiple Airlines
Tue 7/152:55 pmSEA - SOF
2 stops22h 05mMultiple Airlines
Deal found 6/12$909
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Wed 6/182:05 pmSOF - SEA
2 stops40h 36mAir Canada
Wed 7/1612:05 pmSEA - SOF
2 stops37h 55mAir Canada
Deal found 6/12$975
This SWISS deal was found by Cheapflights users on 6/12. 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.
Mon 7/143:30 pmSOF - SEA
2 stops37h 28mSWISS
Mon 8/44:25 pmSEA - SOF
1 stop31h 40mSWISS
Deal found 6/12$999

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 12, 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 7/16

9:15 pm-10:35 am

1 stop23h 20m

Seattle/Tacoma Intl

Sat 8/2

12:30 pm-2:45 pm

1 stop16h 15m

$833

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 7/22

6:20 am-11:55 am

1 stop15h 35m

Seattle/Tacoma Intl

Sun 8/31

7:00 am-6:40 pm

2 stops25h 40m

$858

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 6/30

6:15 am-10:16 pm

2 stops26h 01m

Seattle/Tacoma Intl

Tue 7/15

7:00 am-12:00 pm

2 stops19h 00m

$864

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 6/30

6:15 am-12:25 pm

1 stop16h 10m

Seattle/Tacoma Intl

Tue 7/15

2:55 pm-11:00 pm

2 stops22h 05m

$909

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 7/21

12:00 pm-1:06 pm

2 stops59h 06m

Seattle/Tacoma Intl

Sat 8/30

12:05 pm-11:15 am

2 stops37h 10m

$977

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 7/14

3:30 pm-6:58 pm

2 stops37h 28m

Seattle/Tacoma Intl

Mon 8/4

4:25 pm-10:05 am

1 stop31h 40m

$999

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 7/17

7:00 am-11:35 am

1 stop14h 35m

Seattle/Tacoma Intl

Fri 8/8

5:40 pm-2:00 pm

1 stop34h 20m

$1,104

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Sun 7/13

9:10 pm-6:05 pm

2 stops30h 55m

Seattle/Tacoma Intl

Thu 7/31

10:46 am-1:30 pm

2 stops16h 44m

$1,239

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 7/23

10:30 am-3:05 pm

1 stop14h 35m

$670

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Tue 7/22

6:20 am-11:55 am

1 stop15h 35m

$890

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 11 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 July is currently the most expensive (average of $391). 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 12, 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 12, 2025.
Read reviews from past customers who have flown KLM, 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.
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
SWISS
7.5
Good
1,623 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
United Airlines
7.4
Good
8,790 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Turkish Airlines
7.3
Good
3,848 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,358 reviews

Entertainment

7.1

Overall

7.8

Boarding

7.8

Food

7.2

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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 $833, Turkish Airlines will fly you from Sofia to Seattle and back. In addition to Turkish Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and United Airlines - these airlines can fly you to your destination from $858 and $864, respectively. Turkish Airlines is priced at 9% 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 July is currently the most expensive (average of $391). 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
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$791Average$866FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$795Average$836FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$824Average$971FlexibilityNo cancel feeOn-time77%

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