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Cheap flights from Seattle to Sofia from $277

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sofia departing on 2/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Seattle to Sofia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
10:10 am - 6:40 pm
SEA
-
SOF
22h 30m
2 stops
Lufthansa Logo
6:20 am - 12:20 pm
SOF
-
SEA
16h 00m
1 stop
$518Lufthansa
Mon, Mar 30 - Wed, Apr 15
Lufthansa Logo
2:24 pm - 11:10 pm
SEA
-
SOF
22h 46m
2 stops
Lufthansa Logo
6:20 am - 12:20 pm
SOF
-
SEA
16h 00m
1 stop
$523Lufthansa
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
10:10 am - 6:40 pm
SEA
-
SOF
22h 30m
2 stops
Lufthansa Logo
6:20 am - 10:37 pm
SOF
-
SEA
26h 17m
2 stops
$525Lufthansa
Mon, Mar 30 - Wed, Apr 15
Lufthansa Logo
6:50 pm - 11:10 pm
SEA
-
SOF
18h 20m
1 stop
Lufthansa Logo
6:20 am - 12:20 pm
SOF
-
SEA
16h 00m
1 stop
$530Lufthansa
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
8:10 am - 6:00 pm
SEA
-
SOF
24h 50m
2 stops
Multiple Airlines Logo
6:05 am - 2:20 pm
SOF
-
SEA
17h 15m
1 stop
$531Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
2:24 pm - 11:10 pm
SEA
-
SOF
22h 46m
2 stops
Multiple Airlines Logo
11:05 am - 11:27 pm
SOF
-
SEA
22h 22m
2 stops
$532Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
3:00 pm - 6:10 pm
SEA
-
SOF
41h 10m
2 stops
Lufthansa Logo
6:10 am - 12:10 pm
SOF
-
SEA
16h 00m
1 stop
$533Lufthansa
Sat, May 2 - Wed, Nov 18
United Airlines Logo
3:10 pm - 10:45 pm
SEA
-
SOF
21h 35m
1 stop
United Airlines Logo
6:05 am - 1:20 pm
SOF
-
SEA
17h 15m
1 stop
$534United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
7:00 am - 10:45 pm
SEA
-
SOF
29h 45m
2 stops
United Airlines Logo
6:05 am - 1:20 pm
SOF
-
SEA
17h 15m
1 stop
$538United Airlines
Wed, Mar 4 - Sun, Mar 8
Air Canada Logo
7:20 pm - 6:10 pm
SEA
-
SOF
36h 50m
2 stops
Air Canada Logo
6:10 am - 9:56 pm
SOF
-
SEA
25h 46m
3 stops
$540Air Canada
Sat, May 2 - Wed, Nov 18

United Airlines flights from Seattle to Sofia

Our best United Airlines deals on Seattle to Sofia flight tickets
United Airlines
Mar 4
SEA3:10 pmSeattle/Tacoma Intl
21h 35m
1 stop
SOF10:45 pmSofia
Mar 8
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$534
United Airlines
Mar 4
SEA7:00 amSeattle/Tacoma Intl
29h 45m
2 stops
SOF10:45 pmSofia
Mar 8
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$538
United Airlines
May 3
SEA6:50 pmSeattle/Tacoma Intl
18h 20m
1 stop
SOF11:10 pmSofia
Jun 10
SOF6:20 amSofia
16h 00m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$545

Turkish Airlines flights from Seattle to Sofia

Our best Turkish Airlines deals on Seattle to Sofia flight tickets
Turkish Airlines
Mar 9
SEA8:00 pmSeattle/Tacoma Intl
34h 10m
1 stop
SOF3:10 pmSofia
Apr 27
SOF9:35 amSofia
47h 02m
2 stops
SEA10:37 pmSeattle/Tacoma Intl
$578
Turkish Airlines
Mar 7
SEA7:15 amSeattle/Tacoma Intl
27h 35m
2 stops
SOF8:50 pmSofia
Mar 13
SOF4:00 pmSofia
35h 05m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$593
Turkish Airlines
Mar 7
SEA7:00 pmSeattle/Tacoma Intl
34h 10m
1 stop
SOF3:10 pmSofia
Mar 13
SOF9:40 pmSofia
29h 25m
1 stop
SEA6:05 pmSeattle/Tacoma Intl
$595

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sofia 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 January 27, 2026.
Use the filters below to find and compare flights from Seattle to Sofia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 3/30

10:10 am-6:40 pm

2 stops22h 30m

Sofia

Wed 4/15

6:20 am-12:20 pm

1 stop16h 00m

$518

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

2:24 pm-11:10 pm

2 stops22h 46m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$523

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 3/30

10:10 am-6:40 pm

2 stops22h 30m

Sofia

Wed 4/15

6:20 am-10:37 pm

2 stops26h 17m

$525

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$530

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 3/11

8:10 am-6:00 pm

2 stops24h 50m

Sofia

Wed 3/18

6:05 am-2:20 pm

1 stop17h 15m

$531

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

2:24 pm-11:10 pm

2 stops22h 46m

Sofia

Wed 4/8

11:05 am-11:27 pm

2 stops22h 22m

$532

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 5/2

3:00 pm-6:10 pm

2 stops41h 10m

Sofia

Wed 11/18

6:10 am-12:10 pm

1 stop16h 00m

$533

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

Sun 3/8

6:05 am-1:20 pm

1 stop17h 15m

$534

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 3/4

7:00 am-10:45 pm

2 stops29h 45m

Sofia

Sun 3/8

6:05 am-1:20 pm

1 stop17h 15m

$538

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 5/2

7:20 pm-6:10 pm

2 stops36h 50m

Sofia

Wed 11/18

6:10 am-9:56 pm

3 stops25h 46m

$540

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Sofia from

How to get the cheapest flight ticket from Seattle to Sofia

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 Sofia?

The cheapest month to fly to Sofia from Seattle is in October. Flight prices, which tend to average around $587, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Sofia from Seattle during January instead. Flights to Sofia in January, while not as cheap as those in October, still average around $615.

How far in advance should I book a flight to Sofia?

You are more likely to see cheaper flights to Sofia from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $790 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Seattle for as low as $598 on momondo.

When to book flights from Seattle to Sofia

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

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

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

Fastest flight time

15h 05m

Direct flights

None
The fastest flight from Seattle to Sofia takes 15h 05m
There are no direct flights from Seattle to Sofia. There are no popular flight routes from Seattle to Sofia.
Search flight deals

  • How far is Seattle/Tacoma Intl to Sofia by plane?

    There are 5850.6 mi between Seattle/Tacoma Intl and Sofia. Flights usually cover this in 15h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Sofia Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sofia Airport.

  • What documentation or ID do you need to fly to Sofia Airport?

    The travel and health documents you'll need for your trip to Sofia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sofia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Seattle to Sofia

Compare and see reviews for airlines that fly from Seattle to Sofia with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $540Free CancellationRating
6.8
7,749 reviews
Search Lufthansa flights
Air FrancePriceFrom $555Free CancellationRating
7.4
1,528 reviews
Search Air France flights
Turkish AirlinesPriceFrom $587Free CancellationRating
7.3
4,209 reviews
Search Turkish Airlines flights
KLMPriceFrom $615Free CancellationRating
7.7
1,443 reviews
Search KLM flights
United AirlinesPriceFrom $620Free CancellationRating
7.4
9,206 reviews
Search United Airlines flights

Traveling to a place near Sofia?

Book flights to Sofia if you plan to visit one of these locations
Bansko
Borovets
Velingrad
Sandanski

Why use momondo?

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

It is quick and easy to find Seattle to Sofia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sofia that suits you.

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

All flight searches from Seattle to Sofia on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Seattle to Sofia 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 Seattle to Sofia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Sofia from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Turkish Airlines
Lufthansa
KLM
United Airlines
Air France