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$354+ Cheap flights from Seattle (SEA) to Bulgaria

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheap flight deals from Seattle to Bulgaria

Keep the following information in mind while searching for Seattle to Bulgaria flight deals. Data was last updated April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$738
(KLM)

One-way from

$354
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$748
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
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From Seattle/Tacoma Intl to Bulgaria
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One-way flight from Seattle/Tacoma Intl to Bulgaria
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Highest demand for flights based on searches. 1% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Bulgaria

Cheapest flights from Seattle to Bulgaria
Explore the most affordable flight options available from Seattle to Bulgaria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This FlightHub deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/102:00 pmSEA - VAR
2 stops39h 15mLufthansa
Wed 11/194:00 pmVAR - SEA
2 stops30h 10mLufthansa
Deal found 4/28$711
This oojo deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:10 pmSEA - VAR
1 stop27h 35mTurkish Airlines
Wed 9/310:10 pmVAR - SEA
1 stop29h 05mTurkish Airlines
Deal found 4/28$723
This KLM deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/35:40 pmSEA - SOF
1 stop34h 20mKLM
Wed 9/37:00 amSOF - SEA
1 stop19h 05mKLM
Deal found 4/28$738
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/212:40 pmSEA - SOF
2 stops48h 20mUnited Airlines
Tue 9/26:20 amSOF - SEA
2 stops47h 11mUnited Airlines
Deal found 4/28$739
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:10 pmSEA - SOF
1 stop27h 25mTurkish Airlines
Fri 10/109:15 pmSOF - SEA
1 stop23h 20mTurkish Airlines
Deal found 4/29$746
This United deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/238:00 amSEA - VAR
2 stops21h 15mMultiple Airlines
Sun 12/74:00 pmVAR - SEA
2 stops55h 20mMultiple Airlines
Deal found 4/28$786
This Gurufare deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/24:20 pmSEA - SOF
1 stop36h 25mMultiple Airlines
Wed 9/312:45 pmSOF - SEA
1 stop14h 14mMultiple Airlines
Deal found 4/28$786
This SWISS deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/24:20 pmSEA - SOF
1 stop36h 25mSWISS
Tue 9/21:15 pmSOF - SEA
2 stops43h 44mSWISS
Deal found 4/28$789
This Gurufare deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:50 pmSEA - SOF
1 stop18h 10mLufthansa
Fri 10/106:15 amSOF - SEA
2 stops22h 21mLufthansa
Deal found 4/29$801
This Air Canada deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:50 amSEA - SOF
2 stops26h 20mAir Canada
Mon 12/16:05 amSOF - SEA
3 stops22h 21mAir Canada
Deal found 4/29$950
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/158:20 pmSEA - SOF
1 stop14h 20mAmerican Airlines
Mon 7/288:00 pmSOF - SEA
1 stop25h 10mAmerican Airlines
Deal found 4/29$954
This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/151:30 pmSEA - SOF
1 stop21h 10mBritish Airways
Mon 7/288:00 pmSOF - SEA
1 stop25h 10mBritish Airways
Deal found 4/29$955

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
Use the filters below to find and compare flights from Seattle to Bulgaria that are best for you.

Fly from

Seattle

Fly to

Bulgaria

Route

Depart

Return

Price

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 8/13

7:10 pm-8:45 am

1 stop27h 35m

Varna

Wed 9/3

10:10 pm-5:15 pm

1 stop29h 05m

$723

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 8/3

5:40 pm-2:00 pm

1 stop34h 20m

Sofia

Wed 9/3

7:00 am-4:05 pm

1 stop19h 05m

$738

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 8/2

12:40 pm-11:00 pm

2 stops48h 20m

Sofia

Tue 9/2

6:20 am-7:31 pm

2 stops47h 11m

$739

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/21

7:10 pm-8:35 am

1 stop27h 25m

Sofia

Fri 10/10

9:15 pm-10:35 am

1 stop23h 20m

$746

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 8/2

4:20 pm-2:45 pm

1 stop36h 25m

Sofia

Wed 9/3

12:45 pm-4:59 pm

1 stop14h 14m

$786

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 8/2

4:20 pm-2:45 pm

1 stop36h 25m

Sofia

Tue 9/2

1:15 pm-10:59 pm

2 stops43h 44m

$789

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 9/21

6:50 pm-11:00 pm

1 stop18h 10m

Sofia

Fri 10/10

6:15 am-6:36 pm

2 stops22h 21m

$801

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Wed 8/13

7:00 am-9:00 am

2 stops40h 00m

Varna

Wed 9/3

1:35 pm-8:42 pm

2 stops41h 07m

$839

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 7/15

8:20 pm-8:40 pm

1 stop14h 20m

Sofia

Mon 7/28

8:00 pm-11:10 am

1 stop25h 10m

$954

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 7/15

1:30 pm-8:40 pm

1 stop21h 10m

Sofia

Mon 7/28

8:00 pm-11:10 am

1 stop25h 10m

$955

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 33 results
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Best time to book a flight from Seattle to Bulgaria

Have a flexible travel schedule? Discover the best time to fly to Bulgaria from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Bulgaria

What is the cheapest month to book a flight from Seattle to Bulgaria?

Currently, November is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $632). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $1,218). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BG?

Find hourly flight availability from Seattle to Bulgaria. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Bulgaria as you normally would.

Rainfall in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bulgaria ranges from 1.2 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Bulgaria when rainfall is around 1.2 in.

Temperature in Bulgaria by month

Plan your trip to Bulgaria by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bulgaria, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Bulgaria

Get insights into the airlines that provide service to Bulgaria. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bulgaria. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Seattle to Bulgaria, such as KLM, Austrian Airlines and SWISS. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,334 reviews
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
780 reviews
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,588 reviews
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.4
Good
1,446 reviews
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,696 reviews
KLM
7.8
Good
1,334 reviews

Comfort

7.7

Food

7.2

Crew

8.4

Overall

7.8

Entertainment

7.1

Boarding

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bulgaria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Bulgaria?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Bulgaria.

  • What are the cheapest airlines to fly from Seattle to Bulgaria one-way?

    The cheapest airlines for a one-way flight from Seattle to Bulgaria are British Airways ($549), SWISS ($573), and Air Canada ($575).

  • What are the most popular routes from Seattle to Bulgaria?

    While some choose either Seattle/Tacoma Intl - Varna or Seattle/Tacoma Intl - Bourgas, Seattle/Tacoma Intl - Sofia is the most popular route from Seattle to Bulgaria.

  • Can I find deals for flights from Seattle to Bulgaria that include hotel bookings?

    Yes. In addition to deals on Seattle to Bulgaria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bulgaria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Bulgaria.

  • Can I find deals for business class flights from Seattle to Bulgaria?

    Yes. Cheapflights offers flight deals from Seattle to Bulgaria by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Bulgaria?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $632). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $1,218). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Bulgaria

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Top 4 airlines flying from Seattle to Bulgaria

Discover the top 4 airlines that operate flights from Seattle to Bulgaria. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$684Average$1,144FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$691Average$1,155FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$700Average$1,014FlexibilityNo cancel feeOn-time77%
KLMCheapest$719Average$1,023FlexibilityNo cancel feeOn-time75%

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