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Cheap flights from Seattle to Bulgaria from $356

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 12/13. 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.
Lufthansa Logo
2:10 pm - 10:45 pmSEA-SOF
22h 35m2 stops
Lufthansa Logo
6:05 am - 1:20 pmSOF-SEA
17h 15m1 stop
$455Lufthansa
Find Deal
Thu, Jan 8 - Wed, Jan 21
Lufthansa Logo
2:10 pm - 10:45 pmSEA-SOF
22h 35m2 stops
Lufthansa Logo
7:05 pm - 10:43 pmSOF-SEA
37h 38m2 stops
$467Lufthansa
Find Deal
Thu, Jan 8 - Wed, Jan 21
Lufthansa Logo
2:10 pm - 10:45 pmSEA-SOF
22h 35m2 stops
Lufthansa Logo
6:05 am - 1:20 pmSOF-SEA
17h 15m1 stop
$474Lufthansa
Find Deal
Thu, Jan 8 - Wed, Jan 21
Lufthansa Logo
3:10 pm - 6:20 pmSEA-SOF
17h 10m1 stop
Lufthansa Logo
6:10 am - 8:57 pmSOF-SEA
24h 47m2 stops
$476Lufthansa
Find Deal
Fri, Jan 9 - Wed, Jan 21
Lufthansa Logo
3:10 pm - 6:20 pmSEA-SOF
17h 10m1 stop
Lufthansa Logo
6:05 am - 1:20 pmSOF-SEA
17h 15m1 stop
$489Lufthansa
Find Deal
Fri, Jan 9 - Wed, Jan 21
British Airways Logo
6:50 pm - 11:15 amSEA-SOF
30h 25m1 stop
British Airways Logo
9:00 pm - 4:55 pmSOF-SEA
29h 55m1 stop
$514British Airways
Find Deal
Thu, Jan 8 - Wed, Jan 21
Multiple Airlines Logo
2:00 pm - 10:45 pmSEA-SOF
22h 45m1 stop
Multiple Airlines Logo
6:10 am - 10:06 pmSOF-SEA
25h 56m2 stops
$519Multiple Airlines
Find Deal
Mon, Jan 12 - Mon, Jan 26
Turkish Airlines Logo
7:10 pm - 8:45 amSEA-VAR
27h 35m1 stop
Turkish Airlines Logo
9:35 am - 5:15 pmVAR-SEA
17h 40m1 stop
$982Turkish Airlines
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Sun, May 17 - Sun, May 31
Multiple Airlines Logo
7:00 am - 3:15 pmSEA-VAR
22h 15m2 stops
Multiple Airlines Logo
4:00 pm - 12:20 pmVAR-SEA
54h 20m2 stops
$1,129Multiple Airlines
Find Deal
Sun, May 17 - Sun, May 31
Turkish Airlines Logo
7:00 pm - 8:35 pmSEA-VAR
15h 35m1 stop
Turkish Airlines Logo
10:00 am - 5:05 pmVAR-SEA
17h 05m1 stop
$1,158Turkish Airlines
Find Deal
Sun, Jan 4 - Sun, Jan 11

United Airlines flights from Seattle to Bulgaria

Our best United Airlines deals on Seattle to Bulgaria flight tickets
United Airlines
Jan 22
SEA12:35 pmSeattle/Tacoma Intl
24h 10m
2 stops
SOF10:45 pmSofia
Jan 26
SOF6:10 amSofia
16h 00m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$534
Find similar
United Airlines
Jan 12
SEA5:10 pmSeattle/Tacoma Intl
19h 35m
2 stops
SOF10:45 pmSofia
Jan 21
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$536
Find similar
United Airlines
Jan 12
SEA10:58 amSeattle/Tacoma Intl
16h 17m
2 stops
SOF1:15 pmSofia
Jan 24
SOF6:25 amSofia
25h 51m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$539
Find similar

Lufthansa flights from Seattle to Bulgaria

Our best Lufthansa deals on Seattle to Bulgaria flight tickets
Lufthansa
Jan 8
SEA2:10 pmSeattle/Tacoma Intl
22h 35m
2 stops
SOF10:45 pmSofia
Jan 21
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$455
Find similar
Lufthansa
Jan 8
SEA2:10 pmSeattle/Tacoma Intl
22h 35m
2 stops
SOF10:45 pmSofia
Jan 21
SOF7:05 pmSofia
37h 38m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$467
Find similar
Lufthansa
Jan 8
SEA2:10 pmSeattle/Tacoma Intl
22h 35m
2 stops
SOF10:45 pmSofia
Jan 21
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$474
Find similar

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 November 21, 2025.
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

Thu 1/8

2:10 pm-10:45 pm

2 stops22h 35m

Sofia

Wed 1/21

6:05 am-1:20 pm

1 stop17h 15m

$455

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 1/8

2:10 pm-10:45 pm

2 stops22h 35m

Sofia

Wed 1/21

7:05 pm-10:43 pm

2 stops37h 38m

$467

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 1/8

2:10 pm-10:45 pm

2 stops22h 35m

Sofia

Wed 1/21

6:05 am-1:20 pm

1 stop17h 15m

$474

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 1/9

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Wed 1/21

6:10 am-8:57 pm

2 stops24h 47m

$476

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 1/9

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Wed 1/21

6:05 am-1:20 pm

1 stop17h 15m

$489

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 1/8

6:50 pm-11:15 am

1 stop30h 25m

Sofia

Wed 1/21

9:00 pm-4:55 pm

1 stop29h 55m

$514

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 1/12

2:00 pm-10:45 pm

1 stop22h 45m

Sofia

Mon 1/26

6:10 am-10:06 pm

2 stops25h 56m

$519

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sun 5/17

7:10 pm-8:45 am

1 stop27h 35m

Varna

Sun 5/31

9:35 am-5:15 pm

1 stop17h 40m

$982

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sun 5/17

7:00 am-3:15 pm

2 stops22h 15m

Varna

Sun 5/31

4:00 pm-12:20 pm

2 stops54h 20m

$1,129

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sun 1/4

7:00 pm-8:35 pm

1 stop15h 35m

Varna

Sun 1/11

10:00 am-5:05 pm

1 stop17h 05m

$1,158

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 $602.

What is the cheapest day to depart on your flight to Bulgaria?

The cheapest day to depart from Seattle to Bulgaria is on a Saturday when prices can be found for as low as $897. On the other hand, Friday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,269.

What is the cheapest time of day to depart on your flight to Bulgaria?

In the evening is the cheapest time of day to fly from Seattle to Bulgaria when you can find flight prices for as low as $897. Flying to Bulgaria in the evening is an ideal time because this is during off-peak travel hours. Flights to Bulgaria are more costly at noon, with an average ticket price of $1,099. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $821 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 $701 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

Direct flights

None
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
Air FrancePriceFrom $555Free CancellationRating
7.4
1,493 reviews
Search Air France flights
LufthansaPriceFrom $562Free CancellationRating
6.8
7,579 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $596Free CancellationRating
7.3
4,044 reviews
Search Turkish Airlines flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
9,030 reviews
Search United Airlines flights
KLMPriceFrom $719Free CancellationRating
7.7
1,419 reviews
Search KLM 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.

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