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Bulgaria

$321+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SOF
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Seattle to Bulgaria

Best flights from Seattle to Bulgaria
Discover carefully curated flight deals from Seattle to Bulgaria that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Mytrip deal was found by Cheapflights users on 12/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/312:00 pmSEA - SOF
1 stop13h 40mMultiple Airlines
Sat 2/76:25 amSOF - SEA
2 stops25h 41mMultiple Airlines
Deal found 12/17$521
This FlightHub deal was found by Cheapflights users on 12/16. 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.
Wed 4/18:00 amSEA - SOF
2 stops18h 05mLufthansa
Wed 4/86:20 amSOF - SEA
1 stop16h 00mLufthansa
Deal found 12/16$522
This KLM deal was found by Cheapflights users on 12/15. 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.
Wed 4/15:35 pmSEA - SOF
1 stop34h 25mKLM
Wed 4/87:00 amSOF - SEA
1 stop14h 45mKLM
Deal found 12/15$533
This United Airlines deal was found by Cheapflights users on 12/15. 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 1/262:10 pmSEA - SOF
2 stops22h 35mUnited Airlines
Mon 2/26:10 amSOF - SEA
1 stop16h 00mUnited Airlines
Deal found 12/15$535
This oojo deal was found by Cheapflights users on 12/16. 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.
Fri 1/167:00 pmSEA - VAR
1 stop15h 35mTurkish Airlines
Tue 1/2010:00 amVAR - SEA
1 stop17h 05mTurkish Airlines
Deal found 12/16$678
This United Airlines deal was found by Cheapflights users on 12/15. 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 1/277:00 amSEA - SOF
2 stops20h 15mUnited Airlines
Sat 2/76:25 amSOF - SEA
1 stop15h 45mUnited Airlines
Deal found 12/15$535
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Wed 1/288:40 amSEA - SOF
3 stops23h 40mUnited Airlines
Sat 2/76:25 amSOF - SEA
1 stop15h 45mUnited Airlines
Deal found 12/15$535
This United Airlines deal was found by Cheapflights users on 12/15. 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 1/298:40 amSEA - SOF
3 stops28h 05mUnited Airlines
Mon 2/26:10 amSOF - SEA
1 stop16h 00mUnited Airlines
Deal found 12/15$535
This United Airlines deal was found by Cheapflights users on 12/15. 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 1/262:10 pmSEA - SOF
2 stops22h 35mUnited Airlines
Sat 2/76:25 amSOF - SEA
1 stop15h 45mUnited Airlines
Deal found 12/15$535
This FlightHub deal was found by Cheapflights users on 12/16. 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 2/167:00 pmSEA - VAR
1 stop28h 10mTurkish Airlines
Sat 4/2510:10 pmVAR - SEA
1 stop29h 05mTurkish Airlines
Deal found 12/16$732
This Expedia deal was found by Cheapflights users on 12/16. 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.
Mon 2/162:00 pmSEA - VAR
2 stops39h 15mLufthansa
Sat 4/259:15 amVAR - SEA
2 stops21h 37mLufthansa
Deal found 12/16$754
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Sun 1/257:00 amSEA - SOF
2 stops25h 20mUnited Airlines
Mon 2/26:10 amSOF - SEA
1 stop16h 00mUnited Airlines
Deal found 12/15$535
This United Airlines deal was found by Cheapflights users on 12/15. 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 1/317:00 amSEA - SOF
2 stops25h 20mUnited Airlines
Sat 2/76:25 amSOF - SEA
1 stop15h 45mUnited Airlines
Deal found 12/15$535
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/162:00 pmSEA - VAR
2 stops39h 15mMultiple Airlines
Sat 4/254:00 pmVAR - SEA
3 stops34h 59mMultiple Airlines
Deal found 12/16$1,356
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/163:10 pmSEA - VAR
2 stops24h 20mMultiple Airlines
Tue 1/208:45 pmVAR - SEA
3 stops30h 15mMultiple Airlines
Deal found 12/16$1,415

Find flight deals from Seattle to Bulgaria

Keep the following information in mind while searching for Seattle to Bulgaria flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$475
(Kiwi.com)

One-way from

$321
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$909
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. 15% potential increase in price ($148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 18, 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

Sat 1/31

2:00 pm-1:40 pm

1 stop13h 40m

Sofia

Sat 2/7

6:25 am-10:06 pm

2 stops25h 41m

$521

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

8:00 am-12:05 pm

2 stops18h 05m

Sofia

Wed 4/8

6:20 am-12:20 pm

1 stop16h 00m

$522

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 4/1

5:35 pm-2:00 pm

1 stop34h 25m

Sofia

Wed 4/8

7:00 am-11:45 am

1 stop14h 45m

$533

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 1/26

2:10 pm-10:45 pm

2 stops22h 35m

Sofia

Mon 2/2

6:10 am-12:10 pm

1 stop16h 00m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Tue 1/27

7:00 am-1:15 pm

2 stops20h 15m

Sofia

Sat 2/7

6:25 am-12:10 pm

1 stop15h 45m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Wed 1/28

8:40 am-6:20 pm

3 stops23h 40m

Sofia

Sat 2/7

6:25 am-12:10 pm

1 stop15h 45m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Thu 1/29

8:40 am-10:45 pm

3 stops28h 05m

Sofia

Mon 2/2

6:10 am-12:10 pm

1 stop16h 00m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Mon 1/26

2:10 pm-10:45 pm

2 stops22h 35m

Sofia

Sat 2/7

6:25 am-12:10 pm

1 stop15h 45m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sun 1/25

7:00 am-6:20 pm

2 stops25h 20m

Sofia

Mon 2/2

6:10 am-12:10 pm

1 stop16h 00m

$535

SeattleSofia

SEA - SOF

SEASOF

Seattle/Tacoma Intl

Sat 1/31

7:00 am-6:20 pm

2 stops25h 20m

Sofia

Sat 2/7

6:25 am-12:10 pm

1 stop15h 45m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 23 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, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $510). 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 December 18, 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 December 18, 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
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,428 reviews
KLM
7.7
Good
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air France
7.4
Good
1,507 reviews
KLM
7.7
Good
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
United Airlines
7.4
Good
9,093 reviews
KLM
7.7
Good
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Turkish Airlines
7.3
Good
4,105 reviews
KLM
7.7
Good
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,635 reviews
KLM
7.7
Good
1,428 reviews

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.2

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

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 18h 05m. Lufthansa provides one of the quickest options available for as low as $522. Seattle and Bulgaria are separated by a distance of 5862 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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, July is the cheapest month in which you can book a flight from Seattle to Bulgaria (average of $510). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$541Average$1,054FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$555Average$718FlexibilityNo cancel feeOn-time77%
Turkish AirlinesCheapest$587Average$950FlexibilityNo cancel feeOn-time77%
KLMCheapest$615Average$908FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$621Average$885FlexibilityNo cancel feeOn-time69%

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