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Cheap flights from Seattle to Bulgaria from $297

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 Bulgaria departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Bulgaria

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:40 pm - 2:00 pm
SEA
-
SOF
33h 20m
1 stop
Multiple Airlines Logo
7:00 am - 11:45 am
SOF
-
SEA
14h 45m
1 stop
$531Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
6:40 pm - 2:00 pm
SEA
-
SOF
33h 20m
1 stop
Multiple Airlines Logo
7:00 am - 4:30 pm
SOF
-
SEA
19h 30m
1 stop
$532Multiple Airlines
Sun, Apr 5 - Tue, Apr 21
Lufthansa Logo
2:10 pm - 6:05 pm
SEA
-
SOF
17h 55m
1 stop
Lufthansa Logo
6:20 am - 12:20 pm
SOF
-
SEA
16h 00m
1 stop
$534Lufthansa
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
8:00 am - 12:10 pm
SEA
-
SOF
18h 10m
2 stops
United Airlines Logo
6:20 am - 12:20 pm
SOF
-
SEA
16h 00m
1 stop
$537United Airlines
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
8:00 am - 12:10 pm
SEA
-
SOF
18h 10m
2 stops
United Airlines Logo
6:20 am - 9:53 pm
SOF
-
SEA
25h 33m
2 stops
$545United Airlines
Wed, Apr 1 - Wed, Apr 8
United Airlines Logo
5:00 am - 6:20 pm
SEA
-
SOF
28h 20m
2 stops
United Airlines Logo
6:10 am - 12:20 pm
SOF
-
SEA
16h 10m
1 stop
$564United Airlines
Tue, Mar 24 - Tue, Apr 28
Air France Logo
1:45 pm - 3:30 pm
SEA
-
VAR
63h 45m
2 stops
Air France Logo
8:30 am - 5:39 pm
VAR
-
SEA
19h 09m
1 stop
$605Air France
Mon, May 4 - Mon, May 11
Lufthansa Logo
6:50 pm - 3:15 pm
SEA
-
VAR
34h 25m
2 stops
Lufthansa Logo
9:45 am - 4:59 pm
VAR
-
SEA
17h 14m
1 stop
$606Lufthansa
Fri, Apr 24 - Fri, May 1
Austrian Airlines Logo
7:00 am - 3:15 pm
SEA
-
VAR
23h 15m
2 stops
Austrian Airlines Logo
8:35 pm - 8:53 pm
VAR
-
SEA
34h 18m
2 stops
$627Austrian Airlines
Mon, Mar 16 - Mon, Apr 6
Air France Logo
1:45 pm - 3:30 pm
SEA
-
VAR
63h 45m
2 stops
Air France Logo
8:30 am - 5:39 pm
VAR
-
SEA
19h 09m
1 stop
$662Air France
Mon, May 4 - Mon, May 11

KLM flights from Seattle to Bulgaria

Our best KLM deals on Seattle to Bulgaria flight tickets
KLM
Apr 5
SEA1:45 pmSeattle/Tacoma Intl
14h 15m
1 stop
SOF2:00 pmSofia
Apr 21
SOF7:00 amSofia
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$591
KLM
Apr 4
SEA5:30 pmSeattle/Tacoma Intl
34h 30m
1 stop
SOF2:00 pmSofia
Apr 13
SOF7:00 amSofia
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$635
KLM
Apr 3
SEA5:30 pmSeattle/Tacoma Intl
34h 30m
1 stop
SOF2:00 pmSofia
Apr 13
SOF7:00 amSofia
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$663

Lufthansa flights from Seattle to Bulgaria

Our best Lufthansa deals on Seattle to Bulgaria flight tickets
Lufthansa
Apr 1
SEA2:10 pmSeattle/Tacoma Intl
17h 55m
1 stop
SOF6:05 pmSofia
Apr 8
SOF6:20 amSofia
16h 00m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$534
Lufthansa
Apr 5
SEA6:50 pmSeattle/Tacoma Intl
13h 50m
1 stop
SOF6:40 pmSofia
Apr 21
SOF6:10 amSofia
26h 27m
2 stops
SEA10:37 pmSeattle/Tacoma Intl
$585
Lufthansa
Apr 1
SEA2:10 pmSeattle/Tacoma Intl
17h 55m
1 stop
SOF6:05 pmSofia
Apr 8
SOF6:20 amSofia
16h 00m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$587

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Bulgaria 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 February 14, 2026.
Use the filters below to find and compare flights from Seattle to Bulgaria that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

6:40 pm-2:00 pm

1 stop33h 20m

Sofia

Wed 4/8

7:00 am-11:45 am

1 stop14h 45m

$531

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 4/5

6:40 pm-2:00 pm

1 stop33h 20m

Sofia

Tue 4/21

7:00 am-4:30 pm

1 stop19h 30m

$532

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

2:10 pm-6:05 pm

1 stop17h 55m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$534

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-12:10 pm

2 stops18h 10m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$537

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-12:10 pm

2 stops18h 10m

Sofia

Wed 4/8

6:20 am-9:53 pm

2 stops25h 33m

$545

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/24

5:00 am-6:20 pm

2 stops28h 20m

Sofia

Tue 4/28

6:10 am-12:20 pm

1 stop16h 10m

$564

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Mon 5/4

1:45 pm-3:30 pm

2 stops63h 45m

Varna

Mon 5/11

8:30 am-5:39 pm

1 stop19h 09m

$605

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Fri 4/24

6:50 pm-3:15 pm

2 stops34h 25m

Varna

Fri 5/1

9:45 am-4:59 pm

1 stop17h 14m

$606

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Mon 3/16

7:00 am-3:15 pm

2 stops23h 15m

Varna

Mon 4/6

8:35 pm-8:53 pm

2 stops34h 18m

$627

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Mon 5/4

1:45 pm-3:30 pm

2 stops63h 45m

Varna

Mon 5/11

8:30 am-5:39 pm

1 stop19h 09m

$662

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bulgaria from

How to get the cheapest flight ticket from Seattle to Bulgaria

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 Bulgaria?

If you aren’t able to travel to Bulgaria during the month of October, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $615.

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

You are more likely to see cheaper flights to Bulgaria from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Bulgaria for around $771 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bulgaria from Seattle for as low as $598 on momondo.

Cheap Seattle to Bulgaria flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Bulgaria

Fastest flight time

15h 50m

Direct flights

None
The fastest flight from Seattle to Bulgaria takes 15h 50m
There are no direct flights from Seattle to Bulgaria. There are no popular flight routes from Seattle to Bulgaria.
Search flight deals

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

    Prices for flights from Seattle/Tacoma Intl Airport to Bulgaria are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Bulgaria?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Bulgaria?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Bulgaria.

  • What documentation or ID do you need to fly to Bulgaria?

    The travel and health documents required for your trip to Bulgaria 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 Bulgaria. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Seattle to Bulgaria

Compare and see reviews for airlines that fly from Seattle to Bulgaria with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $537Free CancellationRating
6.8
7,784 reviews
Search Lufthansa flights
Air FrancePriceFrom $555Free CancellationRating
7.4
1,534 reviews
Search Air France flights
Turkish AirlinesPriceFrom $587Free CancellationRating
7.3
4,216 reviews
Search Turkish Airlines flights
KLMPriceFrom $615Free CancellationRating
7.7
1,454 reviews
Search KLM flights
United AirlinesPriceFrom $620Free CancellationRating
7.4
9,290 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Bulgaria for you.

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

All flight searches from Seattle to Bulgaria on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Seattle to Bulgaria flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Seattle to Bulgaria now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bulgaria and let you know when they change.

An easier way to manage your Bulgaria 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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