What is the cheapest airline that flies from Washington to Sofia?

Turkish Airlines, Lufthansa, and United Airlines are the most popular carriers operating from Washington to Sofia

How long does it take to fly to Sofia?

Flight times vary depending on what airport in State of Washington you fly out of and what airport in Sofia you fly into. For example, flying from Seattle to Sofia takes 15h 50m on average. On the other hand, flying from Spokane to Sofia takes 16h 40m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What airlines fly to Sofia?

Turkish Airlines, Lufthansa and KLM are the top three most popular airlines that fly to Sofia from State of Washington according to our data. Turkish Airlines is the first choice among our users, with 50% 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 Washington to Sofia Airport?

Prices for flights from Washington to Sofia Airport are updated daily.

How many operators does momondo search for flights from Washington to Sofia Airport?

As of October 2025, there are 6 operators available to choose from for flights from Washington to Sofia Airport.

How old do you have to be to fly from Washington to Sofia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Sofia Airport.

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

The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$320 Cheap Flights from Washington to Sofia in 2025/26

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Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:10 pm - 6:20 pmSEA-SOF

17h 10m1 stop

6:05 am - 1:20 pmSOF-SEA

17h 15m1 stop

$487Lufthansa

Find Deal

Fri, Nov 7 - Fri, Nov 14

10:05 am - 6:20 pmSEA-SOF

22h 15m2 stops

6:45 pm - 12:10 pmSOF-SEA

27h 25m1 stop

$489Lufthansa

Find Deal

Tue, Dec 2 - Mon, Dec 22

3:10 pm - 10:45 pmSEA-SOF

21h 35m1 stop

6:10 am - 7:16 pmSOF-SEA

23h 06m2 stops

$508Multiple Airlines

Find Deal

Fri, Nov 7 - Fri, Nov 14

6:50 pm - 11:15 amSEA-SOF

30h 25m1 stop

5:25 pm - 4:55 pmSOF-SEA

33h 30m1 stop

$519British Airways

Find Deal

Thu, Nov 27 - Mon, Dec 22

3:10 pm - 10:45 pmSEA-SOF

21h 35m1 stop

6:00 am - 12:10 pmSOF-SEA

16h 10m1 stop

$528United Airlines

Find Deal

Fri, Nov 28 - Tue, Dec 23

1:40 pm - 1:55 pmSEA-SOF

14h 15m1 stop

7:00 am - 11:50 amSOF-SEA

14h 50m1 stop

$529Multiple Airlines

Find Deal

Sat, Nov 29 - Fri, Dec 19

1:40 pm - 1:55 pmSEA-SOF

14h 15m1 stop

7:00 am - 11:50 amSOF-SEA

14h 50m1 stop

$530Multiple Airlines

Find Deal

Sat, Nov 29 - Sun, Dec 21

8:10 am - 6:20 pmSEA-SOF

24h 10m2 stops

6:05 am - 10:06 pmSOF-SEA

26h 01m2 stops

$536Air Canada

Find Deal

Wed, Nov 19 - Tue, Dec 2

4:10 pm - 10:45 pmSEA-SOF

21h 35m1 stop

6:10 am - 12:59 amSOF-SEA

28h 49m3 stops

$538United Airlines

Find Deal

Wed, Oct 29 - Wed, Nov 5

12:59 am - 1:00 pmPDX-SOF

26h 01m2 stops

12:05 pm - 12:50 amSOF-PDX

22h 45m2 stops

$1,740British Airways

Find Deal

Fri, Nov 21 - Sat, Nov 29

KLM flights from State of Washington to Sofia

Our best KLM deals on State of Washington to Sofia flight tickets

KLM

Oct 10

GEG11:20 amSpokane

16h 40m

2 stops

SOF2:00 pmSofia

Apr 7

SOF7:00 amSofia

21h 20m

2 stops

GEG6:20 pmSpokane

$856

Find similar

KLM

Mar 12

PDX7:00 amPortland

22h 05m

2 stops

SOF2:05 pmSofia

Mar 16

SOF7:00 amSofia

14h 25m

1 stop

PDX12:25 pmPortland

$1,182

Find similar

KLM

Mar 12

PDX7:00 amPortland

22h 05m

2 stops

SOF2:05 pmSofia

Mar 16

SOF7:00 amSofia

14h 25m

1 stop

PDX12:25 pmPortland

$1,189

Find similar

United Airlines flights from State of Washington to Sofia

Our best United Airlines deals on State of Washington to Sofia flight tickets

United Airlines

Nov 28

SEA3:10 pmSeattle/Tacoma Intl

21h 35m

1 stop

SOF10:45 pmSofia

Dec 23

SOF6:00 amSofia

16h 10m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$528

Find similar

United Airlines

Oct 29

SEA4:10 pmSeattle/Tacoma Intl

21h 35m

1 stop

SOF10:45 pmSofia

Nov 5

SOF6:10 amSofia

28h 49m

3 stops

SEA12:59 amSeattle/Tacoma Intl

$538

Find similar

United Airlines

Oct 29

SEA4:10 pmSeattle/Tacoma Intl

17h 10m

1 stop

SOF6:20 pmSofia

Nov 4

SOF6:05 amSofia

28h 54m

3 stops

SEA12:59 amSeattle/Tacoma Intl

$540

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/7

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Fri 11/14

6:05 am-1:20 pm

1 stop17h 15m

$487

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 12/2

10:05 am-6:20 pm

2 stops22h 15m

Sofia

Mon 12/22

6:45 pm-12:10 pm

1 stop27h 25m

$489

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/7

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

Fri 11/14

6:10 am-7:16 pm

2 stops23h 06m

$508

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 11/27

6:50 pm-11:15 am

1 stop30h 25m

Sofia

Mon 12/22

5:25 pm-4:55 pm

1 stop33h 30m

$519

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 11/28

3:10 pm-10:45 pm

1 stop21h 35m

Sofia

Tue 12/23

6:00 am-12:10 pm

1 stop16h 10m

$528

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 11/29

1:40 pm-1:55 pm

1 stop14h 15m

Sofia

Fri 12/19

7:00 am-11:50 am

1 stop14h 50m

$529

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 11/29

1:40 pm-1:55 pm

1 stop14h 15m

Sofia

Sun 12/21

7:00 am-11:50 am

1 stop14h 50m

$530

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 11/19

8:10 am-6:20 pm

2 stops24h 10m

Sofia

Tue 12/2

6:05 am-10:06 pm

2 stops26h 01m

$536

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 10/29

4:10 pm-10:45 pm

1 stop21h 35m

Sofia

Wed 11/5

6:10 am-12:59 am

3 stops28h 49m

$538

PortlandSofia

PDX - SOF

PDXSOF

Portland

Fri 11/21

12:59 am-1:00 pm

2 stops26h 01m

Sofia

Sat 11/29

12:05 pm-12:50 am

2 stops22h 45m

$1,740

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington 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

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Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from State of Washington 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 State of Washington during November instead. Flights to Sofia in November, while not as cheap as those in January, still average around $663.

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 State of Washington. 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 State of Washington 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 State of Washington 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 State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $864 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from State of Washington for as low as $701 on momondo.

Cheap State of Washington to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Sofia

Direct flights	None

There are no direct flights from State of Washington to Sofia. There are no popular flight routes from State of Washington to Sofia.

Search flight deals

When did momondo last update prices for flights from Washington to Sofia Airport?
Prices for flights from Washington to Sofia Airport are updated daily.
How many operators does momondo search for flights from Washington to Sofia Airport?
As of October 2025, there are 6 operators available to choose from for flights from Washington to Sofia Airport.
How old do you have to be to fly from Washington to Sofia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The travel and health documents required for your trip to Sofia Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sofia Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from State of Washington to Sofia

Compare and see reviews for airlines that fly from State of Washington to Sofia with momondo

Airline	Rating	Free Cancellation	Price
Air France	PriceFrom $555	Free Cancellation	Rating 7.4 1,467 reviews	Search Air France flights
Turkish Airlines	PriceFrom $599	Free Cancellation	Rating 7.3 3,996 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $646	Free Cancellation	Rating 6.8 7,463 reviews	Search Lufthansa flights
United Airlines	PriceFrom $653	Free Cancellation	Rating 7.4 8,966 reviews	Search United Airlines flights
KLM	PriceFrom $667	Free Cancellation	Rating 7.7 1,399 reviews	Search KLM flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Sofia. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo helps you find the best flight between Washington and Sofia by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Washington to Sofia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Washington to Sofia from $320

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Sofia departing on 10/15. 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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KLM flights from State of Washington to Sofia

Our best KLM deals on State of Washington to Sofia flight tickets

United Airlines flights from State of Washington to Sofia

Our best United Airlines deals on State of Washington to Sofia flight tickets

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How to get the cheapest flight ticket from State of Washington 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 Washington to Sofia?

Turkish Airlines, Lufthansa, and United Airlines are the most popular carriers operating from Washington to Sofia

What airlines fly to Sofia?

How long does it take to fly to Sofia?

Cheap State of Washington to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Sofia

Direct flights

When did momondo last update prices for flights from Washington to Sofia Airport?

How many operators does momondo search for flights from Washington to Sofia Airport?

How old do you have to be to fly from Washington to Sofia Airport?

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

Best airlines flying from State of Washington to Sofia

Compare and see reviews for airlines that fly from State of Washington to Sofia with momondo

Traveling to a place near Sofia?

Why use momondo?

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

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

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

I’m not ready to book a flight from Washington 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