Which layover airport has the shortest connection time from Seattle to Sofia?

Munich (MUC) has the shortest average layover time for this route: 1h 55m.

Which layover airport offers the lowest fares from Seattle to Sofia?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $755.

Which airport is the most popular layover for flights between Seattle and Sofia?

Istanbul (IST) was the most common stop: 77% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Sofia?

British Airways is the most popular carrier operating from Seattle/Tacoma Intl to Sofia

Which layover airport has the shortest travel time from Seattle to Sofia?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 13h 50m.

What airlines fly to Sofia?

Turkish Airlines, Lufthansa and KLM are the top three most popular airlines that fly to Sofia from Seattle according to our data. Turkish Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 5 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Sofia Airport is 5 as of October 2025.

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.

$302 Cheap Flights from Seattle to Sofia in 2025/26

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5:50 am - 10:45 pmSEA-SOF

30h 55m2 stops

6:00 am - 10:06 pmSOF-SEA

26h 06m2 stops

$494Multiple Airlines

Find Deal

Fri, Nov 14 - Thu, Nov 27

3:10 pm - 6:20 pmSEA-SOF

17h 10m1 stop

6:00 am - 12:10 pmSOF-SEA

16h 10m1 stop

$513Lufthansa

Find Deal

Fri, Nov 14 - Thu, Nov 27

6:50 pm - 11:15 amSEA-SOF

30h 25m1 stop

9:00 pm - 4:55 pmSOF-SEA

29h 55m1 stop

$518British Airways

Find Deal

Thu, Nov 13 - Wed, Nov 26

5:50 am - 6:20 pmSEA-SOF

26h 30m2 stops

6:00 am - 7:16 pmSOF-SEA

23h 16m3 stops

$526Air Canada

Find Deal

Fri, Nov 14 - Thu, Nov 27

3:10 pm - 10:45 pmSEA-SOF

21h 35m1 stop

6:10 am - 12:10 pmSOF-SEA

16h 00m1 stop

$527United Airlines

Find Deal

Wed, Nov 12 - Mon, Nov 24

6:00 am - 1:00 pmSEA-SOF

21h 00m2 stops

6:10 am - 12:10 pmSOF-SEA

16h 00m1 stop

$532United Airlines

Find Deal

Sun, Nov 16 - Mon, Nov 24

3:40 pm - 6:20 pmSEA-SOF

40h 40m2 stops

2:35 pm - 10:16 pmSOF-SEA

41h 41m2 stops

$534Air Canada

Find Deal

Thu, Nov 13 - Thu, Nov 27

6:50 pm - 4:20 pmSEA-SOF

35h 30m1 stop

9:30 pm - 6:20 pmSOF-SEA

30h 50m1 stop

$544British Airways

Find Deal

Sat, Feb 28 - Wed, Apr 1

7:00 pm - 8:45 amSEA-SOF

27h 45m1 stop

3:50 pm - 5:15 pmSOF-SEA

35h 25m1 stop

$572Turkish Airlines

Find Deal

Tue, Mar 3 - Thu, Apr 2

8:00 pm - 3:10 pmSEA-SOF

34h 10m1 stop

3:50 pm - 5:15 pmSOF-SEA

35h 25m1 stop

$617Turkish Airlines

Find Deal

Mon, Mar 9 - Mon, Apr 27

British Airways flights from Seattle to Sofia

Our best British Airways deals on Seattle to Sofia flight tickets

British Airways

Nov 13

SEA6:50 pmSeattle/Tacoma Intl

30h 25m

1 stop

SOF11:15 amSofia

Nov 26

SOF9:00 pmSofia

29h 55m

1 stop

SEA4:55 pmSeattle/Tacoma Intl

$518

Find similar

British Airways

Feb 28

SEA6:50 pmSeattle/Tacoma Intl

35h 30m

1 stop

SOF4:20 pmSofia

Apr 1

SOF9:30 pmSofia

30h 50m

1 stop

SEA6:20 pmSeattle/Tacoma Intl

$544

Find similar

British Airways

Mar 3

SEA6:50 pmSeattle/Tacoma Intl

15h 20m

1 stop

SOF8:10 pmSofia

Mar 30

SOF8:00 pmSofia

32h 20m

1 stop

SEA6:20 pmSeattle/Tacoma Intl

$569

Find similar

United Airlines flights from Seattle to Sofia

Our best United Airlines deals on Seattle to Sofia flight tickets

United Airlines

Nov 12

SEA3:10 pmSeattle/Tacoma Intl

21h 35m

1 stop

SOF10:45 pmSofia

Nov 24

SOF6:10 amSofia

16h 00m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$527

Find similar

United Airlines

Nov 16

SEA6:00 amSeattle/Tacoma Intl

21h 00m

2 stops

SOF1:00 pmSofia

Nov 24

SOF6:10 amSofia

16h 00m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$532

Find similar

United Airlines

Nov 12

SEA3:10 pmSeattle/Tacoma Intl

17h 10m

1 stop

SOF6:20 pmSofia

Nov 24

SOF6:05 amSofia

28h 54m

3 stops

SEA12:59 amSeattle/Tacoma Intl

$536

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/14

5:50 am-10:45 pm

2 stops30h 55m

Sofia

Thu 11/27

6:00 am-10:06 pm

2 stops26h 06m

$494

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/14

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Thu 11/27

6:00 am-12:10 pm

1 stop16h 10m

$513

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 11/13

6:50 pm-11:15 am

1 stop30h 25m

Sofia

Wed 11/26

9:00 pm-4:55 pm

1 stop29h 55m

$518

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/14

5:50 am-6:20 pm

2 stops26h 30m

Sofia

Thu 11/27

6:00 am-7:16 pm

3 stops23h 16m

$526

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 11/12

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

Mon 11/24

6:10 am-12:10 pm

1 stop16h 00m

$527

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/16

6:00 am-1:00 pm

2 stops21h 00m

Sofia

Mon 11/24

6:10 am-12:10 pm

1 stop16h 00m

$532

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 11/13

3:40 pm-6:20 pm

2 stops40h 40m

Sofia

Thu 11/27

2:35 pm-10:16 pm

2 stops41h 41m

$534

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 2/28

6:50 pm-4:20 pm

1 stop35h 30m

Sofia

Wed 4/1

9:30 pm-6:20 pm

1 stop30h 50m

$544

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/3

7:00 pm-8:45 am

1 stop27h 45m

Sofia

Thu 4/2

3:50 pm-5:15 pm

1 stop35h 25m

$572

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 3/9

8:00 pm-3:10 pm

1 stop34h 10m

Sofia

Mon 4/27

3:50 pm-5:15 pm

1 stop35h 25m

$617

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

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 October instead. Flights to Sofia in October, while not as cheap as those in January, still average around $644.

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 $860 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.

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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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Sofia Airport is 5 as of October 2025.
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?
Based on momondo bookings for flights between Seattle and Sofia, the leading airline is Turkish Airlines, making up 50% of the total bookings. Other popular airlines include Lufthansa with 35%, KLM with 7%, and United Airlines with 6%.

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
Air France	PriceFrom $555	Free Cancellation	Rating 7.4 1,476 reviews	Search Air France flights
Turkish Airlines	PriceFrom $599	Free Cancellation	Rating 7.3 4,009 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $645	Free Cancellation	Rating 6.8 7,497 reviews	Search Lufthansa flights
United Airlines	PriceFrom $653	Free Cancellation	Rating 7.4 8,982 reviews	Search United Airlines flights
KLM	PriceFrom $719	Free Cancellation	Rating 7.7 1,404 reviews	Search KLM flights

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.

An easier way to manage your Sofia trip

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Cheap flights from Seattle to Sofia from $302

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 10/28. 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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British Airways flights from Seattle to Sofia

Our best British Airways deals on Seattle to Sofia flight tickets

United Airlines flights from Seattle to Sofia

Our best United Airlines deals on Seattle to Sofia flight tickets

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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?

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

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

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

What is the cheapest airline that flies from Seattle/Tacoma Intl to Sofia?

British Airways is the most popular carrier operating from Seattle/Tacoma Intl to Sofia

What airlines fly to Sofia?

Which airport is the most popular layover for flights between Seattle and Sofia?

Istanbul (IST) was the most common stop: 77% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Seattle to Sofia?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $755.

Which layover airport has the shortest travel time from Seattle to Sofia?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 13h 50m.

Which layover airport has the shortest connection time from Seattle to Sofia?

Munich (MUC) has the shortest average layover time for this route: 1h 55m.

When to book flights from Seattle to Sofia

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

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

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

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?

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

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

Traveling to a place near Sofia?

Why use momondo?

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

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

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

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

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Bulgaria

Fly your favorite airline to Sofia

Airlines are sorted and displayed according to clicks in the past 7 days on momondo