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Cheap flights from Seattle to Bulgaria from $253

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 5/13. 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.
Turkish Airlines Logo
7:10 pm - 8:45 am
SEA
-
SOF
27h 35m
1 stop
Turkish Airlines Logo
3:50 pm - 5:15 pm
SOF
-
SEA
35h 25m
1 stop
$595Turkish Airlines
Thu, Apr 23 - Thu, May 28
Turkish Airlines Logo
7:10 pm - 8:15 pm
SEA
-
SOF
15h 05m
1 stop
Turkish Airlines Logo
2:05 pm - 5:15 pm
SOF
-
SEA
37h 10m
1 stop
$597Turkish Airlines
Sun, Apr 12 - Fri, Apr 24
Multiple Airlines Logo
6:50 pm - 11:00 pm
SEA
-
SOF
18h 10m
1 stop
Multiple Airlines Logo
6:20 am - 6:30 pm
SOF
-
SEA
22h 10m
2 stops
$600Multiple Airlines
Sun, May 3 - Wed, Jun 10
Turkish Airlines Logo
7:10 pm - 8:45 am
SEA
-
SOF
27h 35m
1 stop
Turkish Airlines Logo
9:35 am - 5:15 pm
SOF
-
SEA
17h 40m
1 stop
$606Turkish Airlines
Sun, Apr 5 - Tue, Apr 21
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
$607Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
6:50 pm - 11:00 pm
SEA
-
SOF
18h 10m
1 stop
Lufthansa Logo
6:30 am - 12:20 pm
SOF
-
SEA
15h 50m
1 stop
$608Lufthansa
Sun, Apr 12 - Thu, Apr 23
Multiple Airlines Logo
8:25 am - 2:00 pm
SEA
-
SOF
19h 35m
2 stops
Multiple Airlines Logo
7:00 am - 11:45 am
SOF
-
SEA
14h 45m
1 stop
$610Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
Multiple Airlines Logo
10:30 am - 6:10 pm
SEA
-
SOF
21h 40m
2 stops
Multiple Airlines Logo
6:20 am - 6:30 pm
SOF
-
SEA
22h 10m
2 stops
$612Multiple Airlines
Sun, May 3 - Wed, Jun 10
Austrian Airlines Logo
7:00 am - 3:15 pm
SEA
-
VAR
22h 15m
2 stops
Austrian Airlines Logo
4:00 pm - 8:53 pm
VAR
-
SEA
38h 53m
2 stops
$646Austrian Airlines
Mon, May 4 - Mon, May 11
Lufthansa Logo
6:50 pm - 3:15 pm
SEA
-
VAR
34h 25m
2 stops
Lufthansa Logo
4:00 pm - 12:20 pm
VAR
-
SEA
30h 20m
2 stops
$651Lufthansa
Sun, Apr 12 - Thu, Apr 23

KLM flights from Seattle to Bulgaria

Our best KLM deals on Seattle to Bulgaria flight tickets
KLM
Apr 1
SEA8:25 amSeattle/Tacoma Intl
19h 35m
2 stops
SOF2:00 pmSofia
Apr 8
SOF7:00 amSofia
19h 30m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
$615
KLM
Apr 1
SEA8:25 amSeattle/Tacoma Intl
19h 35m
2 stops
SOF2:00 pmSofia
Apr 8
SOF7:00 amSofia
19h 47m
2 stops
SEA4:47 pmSeattle/Tacoma Intl
$625
KLM
Apr 11
SEA5:35 pmSeattle/Tacoma Intl
34h 25m
1 stop
SOF2:00 pmSofia
Apr 23
SOF7:00 amSofia
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
$660

United Airlines flights from Seattle to Bulgaria

Our best United Airlines deals on Seattle to Bulgaria flight tickets
United Airlines
May 3
SEA6:50 pmSeattle/Tacoma Intl
18h 10m
1 stop
SOF11:00 pmSofia
Jun 10
SOF6:20 amSofia
36h 55m
2 stops
SEA9:15 amSeattle/Tacoma Intl
$626
United Airlines
May 3
SEA10:53 pmSeattle/Tacoma Intl
27h 17m
2 stops
SOF12:10 pmSofia
Jun 10
SOF6:20 amSofia
36h 55m
2 stops
SEA9:15 amSeattle/Tacoma Intl
$631
United Airlines
Apr 5
SEA7:12 amSeattle/Tacoma Intl
29h 48m
2 stops
SOF11:00 pmSofia
Apr 21
SOF6:10 amSofia
49h 43m
2 stops
SEA9:53 pmSeattle/Tacoma Intl
$634

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 March 5, 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

Cheapest round-trip

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 4/23

7:10 pm-8:45 am

1 stop27h 35m

Sofia

Thu 5/28

3:50 pm-5:15 pm

1 stop35h 25m

$595

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 4/12

7:10 pm-8:15 pm

1 stop15h 05m

Sofia

Fri 4/24

2:05 pm-5:15 pm

1 stop37h 10m

$597

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 5/3

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Wed 6/10

6:20 am-6:30 pm

2 stops22h 10m

$600

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 4/5

7:10 pm-8:45 am

1 stop27h 35m

Sofia

Tue 4/21

9:35 am-5:15 pm

1 stop17h 40m

$606

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-4:30 pm

1 stop19h 30m

$607
Quickest round-trip

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 4/12

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Thu 4/23

6:30 am-12:20 pm

1 stop15h 50m

$608

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

8:25 am-2:00 pm

2 stops19h 35m

Sofia

Wed 4/8

7:00 am-11:45 am

1 stop14h 45m

$610

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 5/3

10:30 am-6:10 pm

2 stops21h 40m

Sofia

Wed 6/10

6:20 am-6:30 pm

2 stops22h 10m

$612

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Mon 5/4

7:00 am-3:15 pm

2 stops22h 15m

Varna

Mon 5/11

4:00 pm-8:53 pm

2 stops38h 53m

$646

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sun 4/12

6:50 pm-3:15 pm

2 stops34h 25m

Varna

Thu 4/23

4:00 pm-12:20 pm

2 stops30h 20m

$651

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 $765 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 $617 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
KLMPriceFrom $538Free CancellationRating
7.8
1,467 reviews
Search KLM flights
LufthansaPriceFrom $540Free CancellationRating
6.8
7,828 reviews
Search Lufthansa flights
Air FrancePriceFrom $555Free CancellationRating
7.4
1,542 reviews
Search Air France flights
Turkish AirlinesPriceFrom $587Free CancellationRating
7.3
4,244 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $620Free CancellationRating
7.4
9,397 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

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