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 $751.

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

Istanbul (IST) was the most common stop: 72% 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 connection time from Seattle to Sofia?

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

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 49% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 4 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

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.

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 4 as of August 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.

$341 Cheap Flights from Seattle to Sofia in 2025

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Find the cheapest flights from Seattle to Sofia

Round-trip

One-way

Last minute

Cheap round-trip flights

7:00 pm - 9:15 amSEA-SOF

28h 15m1 stop

4:00 pm - 6:05 pmSOF-SEA

35h 05m1 stop

$596Turkish Airlines

Find Deal

Wed, Feb 11 - Wed, Mar 18

7:10 pm - 8:25 pmSEA-SOF

15h 15m1 stop

9:15 pm - 10:35 amSOF-SEA

23h 20m1 stop

$598Turkish Airlines

Find Deal

Sun, Sep 21 - Fri, Oct 10

1:40 pm - 1:55 pmSEA-SOF

14h 15m1 stop

7:00 am - 2:00 pmSOF-SEA

16h 00m1 stop

$625Air France

Find Deal

Tue, Feb 10 - Wed, Mar 18

7:20 am - 1:55 pmSEA-SOF

20h 35m2 stops

7:00 am - 2:00 pmSOF-SEA

16h 00m1 stop

$629Air France

Find Deal

Tue, Feb 10 - Wed, Mar 18

8:25 am - 2:05 pmSEA-SOF

19h 40m2 stops

7:00 am - 12:35 pmSOF-SEA

14h 35m1 stop

$719KLM

Find Deal

Thu, Feb 12 - Tue, Mar 17

8:25 am - 2:05 pmSEA-SOF

19h 40m2 stops

7:00 am - 6:43 pmSOF-SEA

20h 43m2 stops

$729KLM

Find Deal

Thu, Feb 12 - Thu, Mar 19

2:00 pm - 1:25 pmSEA-SOF

13h 25m1 stop

6:00 am - 1:10 pmSOF-SEA

16h 10m1 stop

$806United Airlines

Find Deal

Mon, Feb 9 - Thu, Mar 19

7:00 am - 6:20 pmSEA-SOF

25h 20m2 stops

6:10 am - 1:10 pmSOF-SEA

16h 00m1 stop

$807United Airlines

Find Deal

Sun, Feb 8 - Fri, Mar 20

3:10 pm - 6:20 pmSEA-SOF

17h 10m1 stop

6:10 am - 6:59 pmSOF-SEA

21h 49m2 stops

$818Lufthansa

Find Deal

Sun, Feb 8 - Wed, Mar 18

3:10 pm - 6:20 pmSEA-SOF

17h 10m1 stop

1:55 pm - 9:31 amSOF-SEA

52h 36m2 stops

$819Lufthansa

Find Deal

Sun, Feb 8 - Mon, Mar 16

Turkish Airlines flights from Seattle to Sofia

Our best Turkish Airlines deals on Seattle to Sofia flight tickets

Turkish Airlines

Feb 11

SEA7:00 pmSeattle/Tacoma Intl

28h 15m

1 stop

SOF9:15 amSofia

Mar 18

SOF4:00 pmSofia

35h 05m

1 stop

SEA6:05 pmSeattle/Tacoma Intl

$596

Find similar

Turkish Airlines

Sep 21

SEA7:10 pmSeattle/Tacoma Intl

15h 15m

1 stop

SOF8:25 pmSofia

Oct 10

SOF9:15 pmSofia

23h 20m

1 stop

SEA10:35 amSeattle/Tacoma Intl

$598

Find similar

Turkish Airlines

Feb 12

SEA7:00 pmSeattle/Tacoma Intl

15h 50m

1 stop

SOF8:50 pmSofia

Mar 18

SOF10:05 amSofia

17h 00m

1 stop

SEA6:05 pmSeattle/Tacoma Intl

$620

Find similar

Air France flights from Seattle to Sofia

Our best Air France deals on Seattle to Sofia flight tickets

Air France

Feb 10

SEA1:40 pmSeattle/Tacoma Intl

14h 15m

1 stop

SOF1:55 pmSofia

Mar 18

SOF7:00 amSofia

16h 00m

1 stop

SEA2:00 pmSeattle/Tacoma Intl

$625

Find similar

Air France

Feb 10

SEA7:20 amSeattle/Tacoma Intl

20h 35m

2 stops

SOF1:55 pmSofia

Mar 18

SOF7:00 amSofia

16h 00m

1 stop

SEA2:00 pmSeattle/Tacoma Intl

$629

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 2/11

7:00 pm-9:15 am

1 stop28h 15m

Sofia

Wed 3/18

4:00 pm-6:05 pm

1 stop35h 05m

$596

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/21

7:10 pm-8:25 pm

1 stop15h 15m

Sofia

Fri 10/10

9:15 pm-10:35 am

1 stop23h 20m

$598

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 2/10

1:40 pm-1:55 pm

1 stop14h 15m

Sofia

Wed 3/18

7:00 am-2:00 pm

1 stop16h 00m

$625

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 2/10

7:20 am-1:55 pm

2 stops20h 35m

Sofia

Wed 3/18

7:00 am-2:00 pm

1 stop16h 00m

$629

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 2/12

8:25 am-2:05 pm

2 stops19h 40m

Sofia

Tue 3/17

7:00 am-12:35 pm

1 stop14h 35m

$719

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 2/12

8:25 am-2:05 pm

2 stops19h 40m

Sofia

Thu 3/19

7:00 am-6:43 pm

2 stops20h 43m

$729

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 2/9

2:00 pm-1:25 pm

1 stop13h 25m

Sofia

Thu 3/19

6:00 am-1:10 pm

1 stop16h 10m

$806

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 2/8

7:00 am-6:20 pm

2 stops25h 20m

Sofia

Fri 3/20

6:10 am-1:10 pm

1 stop16h 00m

$807

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 2/8

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Wed 3/18

6:10 am-6:59 pm

2 stops21h 49m

$818

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 2/8

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Mon 3/16

1:55 pm-9:31 am

2 stops52h 36m

$819

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 April instead. Flights to Sofia in April, while not as cheap as those in January, still average around $695.

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 $899 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

Best Price Found	$341
Fastest flight time	13h 25m
Direct flights	None
Airports in Sofia	1 airport

The best one-way flight to Sofia from Seattle in the past 72 hours is $341. The best round-trip flight deal from Seattle to Sofia found on momondo in the last 72 hours is $596.

The fastest flight from Seattle to Sofia takes 13h 25m

There are no direct flights from Seattle to Sofia. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Sofia Airport.

There is 1 airport near Sofia: Sofia (SOF)

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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Sofia Airport is 4 as of August 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 49% of the total bookings. Other popular airlines include Lufthansa with 39%, KLM with 6%, 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
Turkish Airlines	PriceFrom $624	Free Cancellation	Rating 7.3 3,945 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $653	Free Cancellation	Rating 7.4 8,925 reviews	Search United Airlines flights
Lufthansa	PriceFrom $674	Free Cancellation	Rating 6.8 7,330 reviews	Search Lufthansa flights
KLM	PriceFrom $719	Free Cancellation	Rating 7.8 1,385 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

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.

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Cheap flights from Seattle to Sofia from $341

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 10/2. 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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Big names and deals

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Turkish Airlines flights from Seattle to Sofia

Our best Turkish Airlines deals on Seattle to Sofia flight tickets

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Our best Air France 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: 72% 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 $751.

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

Best Price Found

Fastest flight time

Direct flights

Airports in Sofia

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