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$431+ Cheap flights from Belgium to Seattle (SEA)

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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — SEA
oct. 17 — oct. 241
ven. 10/17
ven. 10/24
1 adult, Economy
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Cheap flight deals from Belgium to Seattle

Keep the following information in mind while searching for Belgium to Seattle flight deals. Data was last updated septembre 17, 2025.

Round-trip from

$462
(AirNGo)

One-way from

$431
(Kiwi.com)

Popular in

October

Cheapest in

December

Average price

$691
From Belgium to Seattle/Tacoma Intl
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One-way flight from Belgium to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 7% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Belgium to Seattle

Cheapest flights from Belgium to Seattle
Explore the most affordable flight options available from Belgium to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septembre 17, 2025.

This AirNGo deal was found by Cheapflights users on 9/15. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/22:15 pmBRU - SEA
1 stop15h 25mIcelandair
mer. 10/157:00 pmSEA - BRU
1 stop32h 50mIcelandair
Deal found 9/15$462
This AirNGo deal was found by Cheapflights users on 9/17. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/238:30 amBRU - SEA
1 stop12h 25mUnited Airlines
lun. 10/2710:53 amSEA - BRU
1 stop13h 02mUnited Airlines
Deal found 9/17$538
This oojo deal was found by Cheapflights users on 9/16. 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.
ven. 10/1010:20 amBRU - SEA
1 stop12h 40mScandinavian Airlines
ven. 10/174:20 pmSEA - BRU
1 stop32h 20mScandinavian Airlines
Deal found 9/16$561
This Flighttix deal was found by Cheapflights users on 9/15. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/309:00 amBRU - SEA
2 stops17h 10mUnited Airlines
jeu. 11/65:05 amSEA - BRU
2 stops18h 50mUnited Airlines
Deal found 9/15$563
This Flysmarter deal was found by Cheapflights users on 9/17. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/238:30 amBRU - SEA
2 stops19h 06mAir Canada
lun. 10/278:00 pmSEA - BRU
2 stops27h 50mAir Canada
Deal found 9/17$564
This lastminute.com deal was found by Cheapflights users on 9/16. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/29:40 amBRU - SEA
1 stop34h 19mMultiple Airlines
mer. 10/153:28 pmSEA - BRU
2 stops21h 02mMultiple Airlines
Deal found 9/16$566
This Flighttix deal was found by Cheapflights users on 9/17. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/108:30 amBRU - SEA
1 stop12h 25mUnited Airlines
dim. 10/267:00 amSEA - BRU
1 stop16h 55mUnited Airlines
Deal found 9/17$568
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/238:30 amBRU - SEA
1 stop12h 25mMultiple Airlines
lun. 10/2710:53 amSEA - BRU
1 stop13h 02mMultiple Airlines
Deal found 9/17$569
This Mytrip deal was found by Cheapflights users on 9/16. 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.
dim. 9/211:15 pmCRL - SEA
2 stops32h 30mMultiple Airlines
ven. 10/310:00 amSEA - CRL
3 stops27h 45mMultiple Airlines
Deal found 9/16$940
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/181:15 pmCRL - SEA
2 stops32h 30mMultiple Airlines
mar. 9/307:15 amSEA - CRL
3 stops28h 30mMultiple Airlines
Deal found 9/15$1,037
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 11/2212:55 pmCRL - SEA
3 stops42h 21mMultiple Airlines
ven. 12/52:35 pmSEA - CRL
2 stops19h 40mMultiple Airlines
Deal found 9/15$1,061
This Mytrip deal was found by Cheapflights users on 9/16. 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.
ven. 9/261:20 pmCRL - SEA
2 stops30h 15mMultiple Airlines
sam. 10/410:00 amSEA - CRL
3 stops19h 00mMultiple Airlines
Deal found 9/16$1,079

Cheapflights Fare Finder

 
Customize your flight search to find flights from Belgium to Seattle 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 septembre 17, 2025.
Use the filters below to find and compare flights from Belgium to Seattle that are best for you.

Fly from

Belgium

Fly to

Seattle

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jeu. 10/2

2:15 pm-8:40 pm

1 stop15h 25m

Seattle/Tacoma Intl

mer. 10/15

3:45 pm-12:50 pm

1 stop12h 05m

$481

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

sam. 11/22

7:00 am-7:16 pm

2 stops21h 16m

Seattle/Tacoma Intl

ven. 12/5

5:50 am-7:50 am

2 stops17h 00m

$563

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jeu. 10/2

7:00 am-11:55 am

1 stop13h 55m

Seattle/Tacoma Intl

mer. 10/15

5:00 am-7:45 am

2 stops17h 45m

$564

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

ven. 10/10

8:30 am-11:55 am

1 stop12h 25m

Seattle/Tacoma Intl

dim. 10/26

7:00 am-7:55 am

1 stop16h 55m

$568

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jeu. 10/23

8:30 am-11:55 am

1 stop12h 25m

Seattle/Tacoma Intl

lun. 10/27

10:53 am-7:55 am

1 stop13h 02m

$569

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mar. 10/21

8:30 pm-2:00 pm

1 stop26h 30m

Seattle/Tacoma Intl

ven. 10/24

4:20 pm-10:40 am

1 stop33h 20m

$571

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

sam. 11/22

7:00 am-7:16 pm

2 stops21h 16m

Seattle/Tacoma Intl

ven. 12/5

3:10 pm-1:10 pm

1 stop13h 00m

$576

BrusselsSeattle

CRL - SEA

CRLSEA

Charleroi Brussels

sam. 11/22

9:40 pm-10:16 pm

2 stops33h 36m

Seattle/Tacoma Intl

ven. 12/5

2:35 pm-7:15 pm

2 stops19h 40m

$1,088

BrusselsSeattle

CRL - SEA

CRLSEA

Charleroi Brussels

jeu. 10/2

1:15 pm-12:45 pm

2 stops32h 30m

Seattle/Tacoma Intl

mer. 10/15

3:45 pm-10:50 pm

2 stops22h 05m

$1,091

BrusselsSeattle

CRL - SEA

CRLSEA

Charleroi Brussels

mar. 10/21

7:35 am-5:50 pm

1 stop19h 15m

Seattle/Tacoma Intl

ven. 10/24

1:50 pm-8:10 pm

2 stops21h 20m

$1,119

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 27 results
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Best time to book a flight from Belgium to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Belgium 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 Belgium to Seattle

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

Currently, January is the cheapest month in which you can book a flight from Belgium to Seattle (average of $238). Flying from Belgium to Seattle in June is currently the most expensive (average of $387). 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 BE to SEA?

Find hourly flight availability from Belgium to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septembre 17, 2025.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated septembre 17, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines from Belgium to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
KLM
7.8
Good
1,386 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Icelandair
7.0
Good
545 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
British Airways
6.7
Okay
7,367 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Belgium to Seattle. 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 into for flights to Seattle from Belgium?

    If you book a flight to Seattle from Belgium, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How long is the flight from Belgium to Seattle?

    Departing from Belgium to Seattle will take you 13h 55m. Airlines will cover a distance of 4941 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Belgium to Seattle 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 Belgium to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Belgium to Seattle (average of $238). Flying from Belgium to Seattle in June is currently the most expensive (average of $387). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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Alternative routes for Belgium to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Belgium to Seattle

Discover the top 8 airlines that operate flights from Belgium to Seattle. 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 septembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$524Average$662FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$570Average$790FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$584Average$744FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$586Average$619FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$592Average$848FlexibilityNo cancel feeOn-time70%
KLMCheapest$605Average$684FlexibilityNo cancel feeOn-time75%
DeltaCheapest$616Average$772FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$651Average$723FlexibilityNo cancel feeOn-time76%

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