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Cheap flights from Seattle to Bulgaria from $404

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 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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
8:10 am - 6:00 pmSEA-SOF
23h 50m2 stops
Multiple Airlines Logo
3:00 pm - 9:12 pmSOF-SEA
40h 12m2 stops
$452Multiple Airlines
Find Deal
Mon, Jan 12 - Mon, Jan 26
Multiple Airlines Logo
8:10 am - 6:00 pmSEA-SOF
23h 50m2 stops
Multiple Airlines Logo
6:10 am - 12:10 pmSOF-SEA
16h 00m1 stop
$460Multiple Airlines
Find Deal
Mon, Jan 12 - Mon, Jan 26
Multiple Airlines Logo
3:10 pm - 6:20 pmSEA-SOF
17h 10m1 stop
Multiple Airlines Logo
6:10 am - 7:16 pmSOF-SEA
23h 06m2 stops
$484Multiple Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 23
Lufthansa Logo
3:10 pm - 6:20 pmSEA-SOF
17h 10m1 stop
Lufthansa Logo
6:05 am - 1:20 pmSOF-SEA
17h 15m1 stop
$488Lufthansa
Find Deal
Fri, Jan 16 - Fri, Jan 23
Lufthansa Logo
2:16 pm - 11:10 pmSEA-SOF
22h 54m2 stops
Lufthansa Logo
6:20 am - 12:20 pmSOF-SEA
16h 00m1 stop
$490Lufthansa
Find Deal
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
6:50 pm - 11:10 pmSEA-SOF
18h 20m1 stop
Lufthansa Logo
6:20 am - 12:20 pmSOF-SEA
16h 00m1 stop
$493Lufthansa
Find Deal
Wed, Apr 1 - Wed, Apr 8
Lufthansa Logo
10:05 am - 10:45 pmSEA-SOF
27h 40m2 stops
Lufthansa Logo
6:10 am - 12:20 pmSOF-SEA
16h 10m1 stop
$494Lufthansa
Find Deal
Tue, Mar 24 - Tue, Apr 28
Turkish Airlines Logo
10:58 am - 8:35 pmSEA-VAR
47h 37m2 stops
Turkish Airlines Logo
9:25 pm - 4:01 pmVAR-SEA
28h 36m2 stops
$527Turkish Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
Turkish Airlines Logo
7:00 pm - 9:10 amSEA-VAR
28h 10m1 stop
Turkish Airlines Logo
9:25 pm - 5:05 pmVAR-SEA
29h 40m1 stop
$646Turkish Airlines
Find Deal
Fri, Jan 23 - Mon, Jan 26
Austrian Airlines Logo
8:00 am - 6:35 pmSEA-BOJ
24h 35m2 stops
Austrian Airlines Logo
7:20 pm - 8:10 pmBOJ-SEA
34h 50m2 stops
$1,524Austrian Airlines
Find Deal
Fri, May 22 - Sat, Jun 6

Lufthansa flights from Seattle to Bulgaria

Our best Lufthansa deals on Seattle to Bulgaria flight tickets
Lufthansa
Jan 16
SEA3:10 pmSeattle/Tacoma Intl
17h 10m
1 stop
SOF6:20 pmSofia
Jan 23
SOF6:05 amSofia
17h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$488
Find similar
Lufthansa
Apr 1
SEA2:16 pmSeattle/Tacoma Intl
22h 54m
2 stops
SOF11:10 pmSofia
Apr 8
SOF6:20 amSofia
16h 00m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$490
Find similar
Lufthansa
Apr 1
SEA6:50 pmSeattle/Tacoma Intl
18h 20m
1 stop
SOF11:10 pmSofia
Apr 8
SOF6:20 amSofia
16h 00m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$493
Find similar

United Airlines flights from Seattle to Bulgaria

Our best United Airlines deals on Seattle to Bulgaria flight tickets
United Airlines
Mar 24
SEA12:55 pmSeattle/Tacoma Intl
24h 50m
2 stops
SOF10:45 pmSofia
Apr 28
SOF6:10 amSofia
16h 10m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$499
Find similar
United Airlines
Mar 24
SEA10:55 amSeattle/Tacoma Intl
17h 20m
2 stops
SOF1:15 pmSofia
Apr 28
SOF6:10 amSofia
23h 28m
2 stops
SEA7:38 pmSeattle/Tacoma Intl
$505
Find similar
United Airlines
Mar 24
SEA8:59 amSeattle/Tacoma Intl
19h 46m
3 stops
SOF1:45 pmSofia
Apr 28
SOF6:10 amSofia
22h 23m
2 stops
SEA6:33 pmSeattle/Tacoma Intl
$516
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 December 3, 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

Mon 1/12

8:10 am-6:00 pm

2 stops23h 50m

Sofia

Mon 1/26

3:00 pm-9:12 pm

2 stops40h 12m

$452

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 1/12

8:10 am-6:00 pm

2 stops23h 50m

Sofia

Mon 1/26

6:10 am-12:10 pm

1 stop16h 00m

$460

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Fri 1/23

6:10 am-7:16 pm

2 stops23h 06m

$484

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Fri 1/16

3:10 pm-6:20 pm

1 stop17h 10m

Sofia

Fri 1/23

6:05 am-1:20 pm

1 stop17h 15m

$488

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

2:16 pm-11:10 pm

2 stops22h 54m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$490

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

6:50 pm-11:10 pm

1 stop18h 20m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$493

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/24

10:05 am-10:45 pm

2 stops27h 40m

Sofia

Tue 4/28

6:10 am-12:20 pm

1 stop16h 10m

$494

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Sat 1/17

10:58 am-8:35 pm

2 stops47h 37m

Varna

Sat 1/24

9:25 pm-4:01 pm

2 stops28h 36m

$527

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Fri 1/23

7:00 pm-9:10 am

1 stop28h 10m

Varna

Mon 1/26

9:25 pm-5:05 pm

1 stop29h 40m

$646

SeattleBurgas

SEA - BOJ

SEABOJ

Seattle/Tacoma Intl

Fri 5/22

8:00 am-6:35 pm

2 stops24h 35m

Bourgas

Sat 6/6

7:20 pm-8:10 pm

2 stops34h 50m

$1,524

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.

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 $814 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

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from Seattle to Bulgaria takes 13h 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 $541Free CancellationRating
6.8
7,607 reviews
Search Lufthansa flights
Air FrancePriceFrom $555Free CancellationRating
7.4
1,500 reviews
Search Air France flights
Turkish AirlinesPriceFrom $587Free CancellationRating
7.3
4,071 reviews
Search Turkish Airlines flights
KLMPriceFrom $625Free CancellationRating
7.7
1,428 reviews
Search KLM flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
9,064 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.

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