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

Lufthansa and British Airways 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 Spokane to Sofia takes 16h 30m on average. On the other hand, flying from Seattle to Sofia takes 18h 25m 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?

Lufthansa, Turkish Airlines and KLM are the top three most popular airlines that fly to Sofia from State of Washington according to our data. Lufthansa is the first choice among our users, with 44% 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.

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 June 2026, there are 4 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.

$304 Cheap Flights from Washington to Sofia in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Sofia

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:50 pm - 6:20 pm

SEA

SOF

17h 30m

1 stop

6:25 am - 12:00 pm

SOF

SEA

15h 35m

1 stop

$725Lufthansa

Sun, Nov 1 - Thu, Nov 12

8:10 am - 1:25 pm

SEA

SOF

19h 15m

2 stops

6:25 am - 12:00 pm

SOF

SEA

15h 35m

1 stop

$743Lufthansa

Sun, Nov 1 - Thu, Nov 12

8:40 am - 6:20 pm

SEA

SOF

23h 40m

2 stops

6:00 am - 12:00 pm

SOF

SEA

16h 00m

2 stops

$744Multiple Airlines

Sun, Nov 1 - Thu, Nov 12

7:15 pm - 3:00 pm

SEA

SOF

33h 45m

1 stop

3:50 pm - 5:20 pm

SOF

SEA

35h 30m

1 stop

$749Turkish Airlines

Thu, Oct 8 - Tue, Oct 20

7:15 pm - 3:00 pm

SEA

SOF

33h 45m

1 stop

3:50 pm - 5:20 pm

SOF

SEA

35h 30m

1 stop

$750Turkish Airlines

Thu, Oct 1 - Fri, Oct 23

8:00 am - 10:45 pm

PDX

SOF

28h 45m

2 stops

6:25 am - 12:54 am

SOF

PDX

28h 29m

2 stops

$750United Airlines

Sun, Dec 13 - Thu, Dec 24

2:50 pm - 10:45 pm

SEA

SOF

21h 55m

1 stop

6:00 am - 6:22 pm

SOF

SEA

22h 22m

2 stops

$775Multiple Airlines

Sun, Nov 1 - Sun, Nov 8

1:20 pm - 2:05 pm

PDX

SOF

14h 45m

1 stop

7:00 am - 11:20 am

SOF

PDX

14h 20m

1 stop

$788KLM

Wed, Nov 4 - Sun, Nov 8

10:15 am - 2:05 pm

PDX

SOF

17h 50m

2 stops

7:00 am - 11:20 am

SOF

PDX

14h 20m

1 stop

$793KLM

Wed, Nov 4 - Sun, Nov 8

10:00 am - 6:20 pm

PDX

SOF

22h 20m

2 stops

6:25 am - 10:44 pm

SOF

PDX

26h 19m

3 stops

$800United Airlines

Wed, Nov 4 - Sat, Nov 7

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KLM flights from State of Washington to Sofia

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

KLM

Nov 4

PDX1:20 pmPortland

14h 45m

1 stop

SOF2:05 pmSofia

Nov 8

SOF7:00 amSofia

14h 20m

1 stop

PDX11:20 amPortland

$788

KLM

Nov 4

PDX10:15 amPortland

17h 50m

2 stops

SOF2:05 pmSofia

Nov 8

SOF7:00 amSofia

14h 20m

1 stop

PDX11:20 amPortland

$793

KLM

Nov 4

PDX1:20 pmPortland

14h 45m

1 stop

SOF2:05 pmSofia

Nov 7

SOF7:00 amSofia

22h 43m

2 stops

PDX7:43 pmPortland

$798

United Airlines flights from State of Washington to Sofia

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

United Airlines

Dec 13

PDX8:00 amPortland

28h 45m

2 stops

SOF10:45 pmSofia

Dec 24

SOF6:25 amSofia

28h 29m

2 stops

PDX12:54 amPortland

$750

United Airlines

Nov 4

PDX10:00 amPortland

22h 20m

2 stops

SOF6:20 pmSofia

Nov 7

SOF6:25 amSofia

26h 19m

3 stops

PDX10:44 pmPortland

$800

United Airlines

Sep 6

SEA12:44 pmSeattle/Tacoma Intl

24h 31m

2 stops

SOF11:15 pmSofia

Sep 22

SOF6:10 amSofia

22h 22m

2 stops

SEA6:32 pmSeattle/Tacoma Intl

$828

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/1

2:50 pm-6:20 pm

1 stop17h 30m

Sofia

Thu 11/12

6:25 am-12:00 pm

1 stop15h 35m

$725

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/1

8:10 am-1:25 pm

2 stops19h 15m

Sofia

Thu 11/12

6:25 am-12:00 pm

1 stop15h 35m

$743

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/1

8:40 am-6:20 pm

2 stops23h 40m

Sofia

Thu 11/12

6:00 am-12:00 pm

2 stops16h 00m

$744

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 10/8

7:15 pm-3:00 pm

1 stop33h 45m

Sofia

Tue 10/20

3:50 pm-5:20 pm

1 stop35h 30m

$749

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 10/1

7:15 pm-3:00 pm

1 stop33h 45m

Sofia

Fri 10/23

3:50 pm-5:20 pm

1 stop35h 30m

$750

PortlandSofia

PDX - SOF

PDXSOF

Portland

Sun 12/13

8:00 am-10:45 pm

2 stops28h 45m

Sofia

Thu 12/24

6:25 am-12:54 am

2 stops28h 29m

$750

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 11/1

2:50 pm-10:45 pm

1 stop21h 55m

Sofia

Sun 11/8

6:00 am-6:22 pm

2 stops22h 22m

$775

Quickest round-trip

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

1:20 pm-2:05 pm

1 stop14h 45m

Sofia

Sun 11/8

7:00 am-11:20 am

1 stop14h 20m

$788

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:15 am-2:05 pm

2 stops17h 50m

Sofia

Sun 11/8

7:00 am-11:20 am

1 stop14h 20m

$793

PortlandSofia

PDX - SOF

PDXSOF

Portland

Wed 11/4

10:00 am-6:20 pm

2 stops22h 20m

Sofia

Sat 11/7

6:25 am-10:44 pm

3 stops26h 19m

$800

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Airlines

Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from State of Washington is in August. Flight prices, which tend to average around $228, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Sofia from State of Washington during April instead. Flights to Sofia in April, while not as cheap as those in August, still average around $481.

How far in advance should I book a flight from Washington 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 $755 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 $673 on momondo.

Can stopping save me money on State of Washington to Sofia flights?

You could potentially save up to 28% on your flight if you consider stops on a State of Washington to Sofia flight.

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

Fastest flight time	16h 30m
Direct flights	None

The fastest flight from State of Washington to Sofia takes 16h 30m

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

Frequently asked questions about flying from Washington to Sofia

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 June 2026, there are 4 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
KLM	PriceFrom $538	Free Cancellation	Rating 7.8 1,531 reviews	Search KLM flights
Lufthansa	PriceFrom $541	Free Cancellation	Rating 6.8 8,102 reviews	Search Lufthansa flights
Turkish Airlines	PriceFrom $571	Free Cancellation	Rating 7.4 4,425 reviews	Search Turkish Airlines flights
United Airlines	PriceFrom $620	Free Cancellation	Rating 7.4 9,898 reviews	Search United Airlines flights

Bansko

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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 $304

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 7/20. 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

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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

What is the cheapest month to fly to Sofia?

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

Can stopping save me money on State of Washington to Sofia flights?

What is the cheapest airline that flies 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

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Frequently asked questions about flying from Washington to Sofia

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Why use momondo?

An easier way to manage your Sofia trip

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