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Bulgaria

$518+ 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This KAYAK deal was found by Cheapflights users on 11/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:50 pmSEA - SOF
1 stop30h 25mBritish Airways
Wed 12/249:00 pmSOF - SEA
1 stop29h 55mBritish Airways
Deal found 11/2$518
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Mon 12/12:00 pmSEA - SOF
1 stop13h 25mLufthansa
Mon 12/86:10 amSOF - SEA
1 stop16h 00mLufthansa
Deal found 11/2$532
This Air France deal was found by Cheapflights users on 11/2. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/19:30 amSEA - SOF
2 stops18h 35mMultiple Airlines
Mon 12/87:00 amSOF - SEA
1 stop14h 50mMultiple Airlines
Deal found 11/2$533
This oojo deal was found by Cheapflights users on 11/2. 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 11/1212:35 pmSEA - SOF
2 stops34h 10mTurkish Airlines
Wed 11/199:35 amSOF - SEA
2 stops43h 17mTurkish Airlines
Deal found 11/2$539
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/25:05 amSEA - SOF
2 stops31h 40mUnited Airlines
Wed 12/246:10 amSOF - SEA
2 stops28h 49mUnited Airlines
Deal found 11/2$542
This Expedia deal was found by Cheapflights users on 11/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:10 pmSEA - SOF
1 stop21h 35mMultiple Airlines
Sun 1/117:05 pmSOF - SEA
2 stops37h 11mMultiple Airlines
Deal found 11/2$545
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Thu 12/42:00 pmSEA - SOF
1 stop22h 45mUnited Airlines
Wed 12/246:10 amSOF - SEA
2 stops28h 49mUnited Airlines
Deal found 11/2$550
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Mon 12/18:10 amSEA - SOF
2 stops28h 35mUnited Airlines
Wed 12/242:25 pmSOF - SEA
2 stops20h 34mUnited Airlines
Deal found 11/2$557
This KAYAK deal was found by Cheapflights users on 11/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/303:10 pmSEA - SOF
1 stop21h 35mLufthansa
Wed 12/246:10 amSOF - SEA
2 stops17h 10mLufthansa
Deal found 11/2$566
This KAYAK deal was found by Cheapflights users on 11/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/12:00 pmSEA - SOF
1 stop22h 45mLufthansa
Wed 12/246:10 amSOF - SEA
2 stops17h 10mLufthansa
Deal found 11/2$579

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$518
(KAYAK)

One-way from

$518
(Ovago)

Popular in

December

Cheapest in

January

Average price

$653
Provider with most accurate pricing for Seattle/Tacoma Intl-Sofia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sofia flights.
Search Deals
From Seattle/Tacoma Intl to Bulgaria
Search Deals
One-way flight from Seattle/Tacoma Intl to Bulgaria
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 3, 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

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 12/2

5:05 am-10:45 pm

2 stops31h 40m

Sofia

Wed 12/24

6:10 am-12:59 am

2 stops28h 49m

$542

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Fri 3/27

8:00 pm-7:45 am

1 stop26h 45m

Varna

Fri 4/3

10:10 pm-10:29 pm

2 stops34h 19m

$558

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 3/24

9:19 am-6:20 pm

3 stops24h 01m

Sofia

Tue 4/28

6:10 am-12:20 pm

1 stop16h 10m

$578

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 4/7

5:35 pm-2:00 pm

1 stop34h 25m

Sofia

Tue 4/21

7:00 am-11:35 am

1 stop14h 35m

$584

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 3/1

10:05 am-6:20 pm

2 stops22h 15m

Sofia

Thu 3/26

2:35 pm-10:16 pm

2 stops40h 41m

$585

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 5/2

7:45 pm-1:15 pm

2 stops31h 30m

Sofia

Tue 5/12

6:10 am-10:16 pm

2 stops26h 06m

$592

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 3/9

8:00 pm-8:45 am

1 stop27h 45m

Sofia

Mon 4/27

9:35 am-10:29 pm

2 stops22h 54m

$595

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Thu 1/22

2:00 pm-3:15 pm

2 stops39h 15m

Varna

Mon 1/26

4:00 pm-1:20 pm

2 stops55h 20m

$602

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 12/4

5:11 pm-10:45 pm

2 stops19h 34m

Sofia

Thu 12/25

2:35 pm-12:59 am

2 stops20h 24m

$617

SeattleVarna

SEA - VAR

SEAVAR

Seattle/Tacoma Intl

Fri 3/27

4:10 pm-2:15 pm

2 stops37h 05m

Varna

Fri 4/3

4:00 pm-12:20 pm

2 stops30h 20m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 22 results
1
2
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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 $537). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $943). 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 November 3, 2025.

One of the essential ways to save on airfare from Seattle to Bulgaria is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 39% on airfare.

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 November 3, 2025.
Read reviews from past customers who have flown KLM, Air France, and United Airlines from Seattle to Bulgaria. 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
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,405 reviews
KLM
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Air France
7.4
Good
1,482 reviews
KLM
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
United Airlines
7.4
Good
8,996 reviews
KLM
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Turkish Airlines
7.3
Good
4,040 reviews
KLM
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,544 reviews
KLM
7.7
Good
1,405 reviews

Crew

8.4

Comfort

7.7

Overall

7.7

Entertainment

7.1

Food

7.3

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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.

  • How long is the flight from Seattle to Bulgaria?

    A quick flight from Seattle to Bulgaria can take about 26h 45m. United Airlines provides one of the quickest options available for as low as $558. Seattle and Bulgaria are separated by a distance of 5908 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Lufthansa ($518), British Airways ($549), and Air Canada ($558).

  • 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 $537). Flying from Seattle to Bulgaria in June is currently the most expensive (average of $943). 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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Top 5 airlines flying from Seattle to Bulgaria

Discover the top 5 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$562Average$1,074FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$596Average$970FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$676Average$980FlexibilityNo cancel feeOn-time69%
KLMCheapest$719Average$942FlexibilityNo cancel feeOn-time75%

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