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Cheap flights from Seattle to Sofia from $372

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 11/2. 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

Logo
7:00 am - 11:50 amSEA-SOF
18h 50m2 stops
Logo
6:05 am - 1:20 pmSOF-SEA
17h 15m1 stop
$529
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Wed, Nov 5 - Wed, Nov 12
Lufthansa Logo
6:50 pm - 6:40 pmSEA-SOF
13h 50m1 stop
Lufthansa Logo
6:00 am - 12:10 pmSOF-SEA
16h 10m1 stop
$530Lufthansa
Find Deal
Sun, Oct 19 - Tue, Nov 4
Turkish Airlines Logo
7:00 pm - 3:10 pmSEA-SOF
34h 10m1 stop
Turkish Airlines Logo
4:00 pm - 5:05 pmSOF-SEA
35h 05m1 stop
$561Turkish Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
British Airways Logo
1:25 pm - 8:10 pmSEA-SOF
20h 45m1 stop
British Airways Logo
5:25 pm - 11:30 amSOF-SEA
28h 05m1 stop
$568British Airways
Find Deal
Tue, Nov 4 - Mon, Nov 17
Turkish Airlines Logo
7:10 pm - 8:35 amSEA-SOF
27h 25m1 stop
Turkish Airlines Logo
3:35 pm - 5:15 pmSOF-SEA
35h 40m1 stop
$570Turkish Airlines
Find Deal
Sun, Sep 21 - Fri, Oct 10
United Airlines Logo
10:53 am - 1:15 pmSEA-SOF
16h 22m2 stops
United Airlines Logo
6:10 am - 12:10 pmSOF-SEA
16h 00m1 stop
$575United Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 21
Air Canada Logo
8:15 am - 6:20 pmSEA-SOF
24h 05m2 stops
Air Canada Logo
6:10 am - 7:16 pmSOF-SEA
23h 06m2 stops
$577Air Canada
Find Deal
Mon, Nov 3 - Fri, Nov 14
United Airlines Logo
3:10 pm - 10:45 pmSEA-SOF
21h 35m1 stop
United Airlines Logo
2:35 pm - 9:53 amSOF-SEA
29h 18m2 stops
$581United Airlines
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Sun, Nov 2 - Fri, Nov 14
Air Canada Logo
8:15 am - 6:20 pmSEA-SOF
24h 05m2 stops
Air Canada Logo
6:00 am - 10:16 pmSOF-SEA
26h 16m2 stops
$584Air Canada
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Mon, Nov 3 - Tue, Nov 11
British Airways Logo
6:50 pm - 11:15 amSEA-SOF
30h 25m1 stop
British Airways Logo
5:25 pm - 11:30 amSOF-SEA
28h 05m1 stop
$618British Airways
Find Deal
Thu, Nov 6 - Mon, Nov 17

Turkish Airlines flights from Seattle to Sofia

Our best Turkish Airlines deals on Seattle to Sofia flight tickets
Turkish Airlines
Nov 5
SEA7:00 pmSeattle/Tacoma Intl
34h 10m
1 stop
SOF3:10 pmSofia
Nov 12
SOF4:00 pmSofia
35h 05m
1 stop
SEA5:05 pmSeattle/Tacoma Intl
$561
Find similar
Turkish Airlines
Sep 21
SEA7:10 pmSeattle/Tacoma Intl
27h 25m
1 stop
SOF8:35 amSofia
Oct 10
SOF3:35 pmSofia
35h 40m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$570
Find similar
Turkish Airlines
Sep 21
SEA7:10 pmSeattle/Tacoma Intl
33h 35m
1 stop
SOF2:45 pmSofia
Oct 10
SOF9:15 pmSofia
30h 00m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$579
Find similar

British Airways flights from Seattle to Sofia

Our best British Airways deals on Seattle to Sofia flight tickets
British Airways
Nov 4
SEA1:25 pmSeattle/Tacoma Intl
20h 45m
1 stop
SOF8:10 pmSofia
Nov 17
SOF5:25 pmSofia
28h 05m
1 stop
SEA11:30 amSeattle/Tacoma Intl
$568
Find similar
British Airways
Nov 6
SEA6:50 pmSeattle/Tacoma Intl
30h 25m
1 stop
SOF11:15 amSofia
Nov 17
SOF5:25 pmSofia
28h 05m
1 stop
SEA11:30 amSeattle/Tacoma Intl
$618
Find similar

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 September 15, 2025.
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

Wed 11/5

7:00 am-11:50 am

2 stops18h 50m

Sofia

Wed 11/12

6:05 am-1:20 pm

1 stop17h 15m

$529

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 10/19

6:50 pm-6:40 pm

1 stop13h 50m

Sofia

Tue 11/4

6:00 am-12:10 pm

1 stop16h 10m

$530

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 11/5

7:00 pm-3:10 pm

1 stop34h 10m

Sofia

Wed 11/12

4:00 pm-5:05 pm

1 stop35h 05m

$561

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 11/4

1:25 pm-8:10 pm

1 stop20h 45m

Sofia

Mon 11/17

5:25 pm-11:30 am

1 stop28h 05m

$568

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/21

7:10 pm-8:35 am

1 stop27h 25m

Sofia

Fri 10/10

3:35 pm-5:15 pm

1 stop35h 40m

$570

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 11/4

10:53 am-1:15 pm

2 stops16h 22m

Sofia

Fri 11/21

6:10 am-12:10 pm

1 stop16h 00m

$575

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 11/3

8:15 am-6:20 pm

2 stops24h 05m

Sofia

Fri 11/14

6:10 am-7:16 pm

2 stops23h 06m

$577

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/2

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

Fri 11/14

2:35 pm-9:53 am

2 stops29h 18m

$581

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 11/3

8:15 am-6:20 pm

2 stops24h 05m

Sofia

Tue 11/11

6:00 am-10:16 pm

2 stops26h 16m

$584

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 11/6

6:50 pm-11:15 am

1 stop30h 25m

Sofia

Mon 11/17

5:25 pm-11:30 am

1 stop28h 05m

$618

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 January. Flight prices, which tend to average around $602, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Sofia from Seattle during April instead. Flights to Sofia in April, while not as cheap as those in January, still average around $668.

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

According to our data, Saturday is the cheapest day to fly to Sofia from Seattle. The lowest ticket price found for a Saturday departure recently was $897. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Seattle to Sofia on a Friday will generally be more expensive and average around $1,269. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

In the evening is the cheapest time of day to fly from Seattle to Sofia when you can find flight prices for as low as $897. Flying to Sofia in the evening is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Sofia, so prices are often more expensive at around $1,099 per ticket.

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 $881 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 $701 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

Direct flights

None
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 13h 25m, 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
Turkish AirlinesPriceFrom $606Free CancellationRating
7.3
3,968 reviews
Search Turkish Airlines flights
LufthansaPriceFrom $646Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
United AirlinesPriceFrom $653Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
KLMPriceFrom $719Free CancellationRating
7.8
1,385 reviews
Search KLM 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
Delta
American Airlines
United Airlines
Turkish Airlines
Lufthansa
Frontier
British Airways
Qatar Airways
Spirit Airlines
Ryanair
Emirates
Alaska Airlines