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Cheap flights from Sofia to Seattle from $406

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sofia to Seattle departing on 2/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Sofia to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
7:00 am - 3:50 pmSOF-SEA
18h 50m1 stop
KLM Logo
5:35 pm - 2:00 pmSEA-SOF
34h 25m1 stop
$872KLM
Find Deal
Thu, Apr 23 - Thu, May 28
KLM Logo
7:00 am - 3:50 pmSOF-SEA
18h 50m1 stop
KLM Logo
5:35 pm - 2:00 pmSEA-SOF
34h 25m1 stop
$874KLM
Find Deal
Thu, Apr 23 - Thu, May 28
KLM Logo
7:00 am - 11:35 amSOF-SEA
14h 35m1 stop
KLM Logo
9:50 am - 2:00 pmSEA-SOF
18h 10m2 stops
$877KLM
Find Deal
Thu, Apr 23 - Thu, May 28
KLM Logo
7:00 am - 11:35 amSOF-SEA
14h 35m1 stop
KLM Logo
9:50 am - 2:00 pmSEA-SOF
18h 10m2 stops
$878KLM
Find Deal
Thu, Apr 23 - Thu, May 28
Air Canada Logo
6:10 am - 9:33 amSOF-SEA
37h 23m2 stops
Air Canada Logo
1:45 pm - 6:40 pmSEA-SOF
18h 55m2 stops
$886Air Canada
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Thu, Apr 23 - Thu, May 28
Lufthansa Logo
6:05 am - 7:03 pmSOF-SEA
22h 58m2 stops
Lufthansa Logo
4:10 pm - 10:45 pmSEA-SOF
21h 35m1 stop
$907Lufthansa
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Mon, Feb 16 - Fri, Oct 30
KLM Logo
7:00 am - 6:23 pmSOF-SEA
21h 23m2 stops
KLM Logo
9:05 am - 2:05 pmSEA-SOF
19h 00m2 stops
$914KLM
Find Deal
Fri, Jan 9 - Fri, Jan 16
Multiple Airlines Logo
7:55 am - 7:03 pmSOF-SEA
21h 08m2 stops
Multiple Airlines Logo
10:35 am - 1:45 pmSEA-SOF
18h 10m2 stops
$921Multiple Airlines
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Mon, Feb 16 - Fri, Oct 30
KLM Logo
7:00 am - 11:50 amSOF-SEA
14h 50m1 stop
KLM Logo
7:10 am - 2:05 pmSEA-SOF
44h 55m2 stops
$946KLM
Find Deal
Wed, Jan 28 - Sun, Feb 1
British Airways Logo
5:25 pm - 4:55 pmSOF-SEA
33h 30m1 stop
British Airways Logo
7:50 pm - 1:00 pmSEA-SOF
32h 10m1 stop
$947British Airways
Find Deal
Mon, Feb 16 - Fri, Oct 30

KLM flights from Sofia to Seattle

Our best KLM deals on Sofia to Seattle flight tickets
KLM
Apr 23
SOF7:00 amSofia
18h 50m
1 stop
SEA3:50 pmSeattle/Tacoma Intl
May 28
SEA5:35 pmSeattle/Tacoma Intl
34h 25m
1 stop
SOF2:00 pmSofia
$872
Find similar
KLM
Apr 23
SOF7:00 amSofia
18h 50m
1 stop
SEA3:50 pmSeattle/Tacoma Intl
May 28
SEA5:35 pmSeattle/Tacoma Intl
34h 25m
1 stop
SOF2:00 pmSofia
$874
Find similar
KLM
Apr 23
SOF7:00 amSofia
14h 35m
1 stop
SEA11:35 amSeattle/Tacoma Intl
May 28
SEA9:50 amSeattle/Tacoma Intl
18h 10m
2 stops
SOF2:00 pmSofia
$877
Find similar

United Airlines flights from Sofia to Seattle

Our best United Airlines deals on Sofia to Seattle flight tickets
United Airlines
Jan 9
SOF6:10 amSofia
26h 33m
3 stops
SEA10:43 pmSeattle/Tacoma Intl
Jan 16
SEA10:58 amSeattle/Tacoma Intl
21h 22m
2 stops
SOF6:20 pmSofia
$955
Find similar
United Airlines
Jan 28
SOF6:05 amSofia
22h 09m
2 stops
SEA6:14 pmSeattle/Tacoma Intl
Feb 1
SEA8:40 amSeattle/Tacoma Intl
23h 40m
3 stops
SOF6:20 pmSofia
$1,403
Find similar
United Airlines
Jan 28
SOF6:05 amSofia
22h 09m
2 stops
SEA6:14 pmSeattle/Tacoma Intl
Feb 1
SEA8:40 amSeattle/Tacoma Intl
23h 40m
3 stops
SOF6:20 pmSofia
$1,500
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 26, 2025.
Use the filters below to find and compare flights from Sofia to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-3:50 pm

1 stop18h 50m

Seattle/Tacoma Intl

Thu 5/28

5:35 pm-2:00 pm

1 stop34h 25m

$872

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-3:50 pm

1 stop18h 50m

Seattle/Tacoma Intl

Thu 5/28

5:35 pm-2:00 pm

1 stop34h 25m

$874

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-11:35 am

1 stop14h 35m

Seattle/Tacoma Intl

Thu 5/28

9:50 am-2:00 pm

2 stops18h 10m

$877

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

7:00 am-11:35 am

1 stop14h 35m

Seattle/Tacoma Intl

Thu 5/28

9:50 am-2:00 pm

2 stops18h 10m

$878

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Thu 4/23

6:10 am-9:33 am

2 stops37h 23m

Seattle/Tacoma Intl

Thu 5/28

1:45 pm-6:40 pm

2 stops18h 55m

$886

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 2/16

6:05 am-7:03 pm

2 stops22h 58m

Seattle/Tacoma Intl

Fri 10/30

4:10 pm-10:45 pm

1 stop21h 35m

$907

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Fri 1/9

7:00 am-6:23 pm

2 stops21h 23m

Seattle/Tacoma Intl

Fri 1/16

9:05 am-2:05 pm

2 stops19h 00m

$914

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 2/16

7:55 am-7:03 pm

2 stops21h 08m

Seattle/Tacoma Intl

Fri 10/30

10:35 am-1:45 pm

2 stops18h 10m

$921

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Wed 1/28

7:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Sun 2/1

7:10 am-2:05 pm

2 stops44h 55m

$946

SofiaSeattle

SOF - SEA

SOFSEA

Sofia

Mon 2/16

5:25 pm-4:55 pm

1 stop33h 30m

Seattle/Tacoma Intl

Fri 10/30

7:50 pm-1:00 pm

1 stop32h 10m

$947

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Sofia to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Sofia to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $802. If you don’t want to visit Seattle in February, then you should wait until June to fly from Sofia, when ticket prices are also cheap, with an average price of $834.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Sofia is on a Sunday. momondo users have found tickets for Sunday departures for as low as $878. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Sofia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,068.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Sofia in the evening is the least expensive time of day to depart. momondo users have found prices as low as $854 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $929. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How have Sofia to Seattle flight prices changed over time?

When to book flights from Sofia to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Sofia to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sofia to Seattle (SOF to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sofia to Seattle

Fastest flight time

14h 50m

Direct flights

None
The fastest flight from Sofia to Seattle takes 14h 50m
There are no direct flights from Sofia to Seattle. There are no popular flight routes from Sofia to Seattle.
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  • How far is Sofia to Seattle/Tacoma Intl by plane?

    Sofia and Seattle/Tacoma Intl are 5850.6 mi apart from one another. Typically, this will take 14h 35m by plane in normal conditions.

  • When did momondo last update prices for flights from Sofia Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Sofia Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Sofia Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Sofia Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Sofia Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sofia to Seattle?

Best airlines flying from Sofia to Seattle

Compare and see reviews for airlines that fly from Sofia to Seattle with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $791Free CancellationRating
6.8
7,594 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $824Free CancellationRating
7.3
4,059 reviews
Search Turkish Airlines flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Cle Elum
Lakewood
Federal Way
Fife
Centralia
Kirkland
Westport
Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Sofia to Seattle?

Finding the right flight to Seattle from Sofia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Sofia to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Sofia with this policy.

How can momondo help me find flights from Sofia to Seattle?

Once all potential Sofia to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Sofia to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Sofia to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.

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