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$476+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — SEA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$487
(AirNGo)

One-way from

$476
(Kiwi.com)

Popular in

October

Cheapest in

December

Average price

$842
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. 6% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This AirNGo deal was found by Cheapflights users on 7/31. 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.
Thu 9/181:50 pmBRU - SEA
1 stop13h 00mIcelandair
Wed 10/13:45 pmSEA - BRU
1 stop12h 05mIcelandair
Deal found 7/31$487
This AirNGo deal was found by Cheapflights users on 7/31. 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.
Thu 9/182:50 pmBRU - SEA
1 stop12h 30mBritish Airways
Wed 10/13:00 pmSEA - BRU
2 stops20h 25mBritish Airways
Deal found 7/31$500
This Flysmarter deal was found by Cheapflights users on 7/30. 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.
Thu 8/287:00 pmBRU - SEA
2 stops27h 50mScandinavian Airlines
Wed 9/104:00 pmSEA - BRU
1 stop14h 20mScandinavian Airlines
Deal found 7/30$528
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/103:15 pmBRU - SEA
1 stop29h 20mAmerican Airlines
Wed 9/241:50 pmSEA - BRU
2 stops21h 35mAmerican Airlines
Deal found 7/31$532
This Flighttix deal was found by Cheapflights users on 7/30. 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.
Fri 8/2210:30 amBRU - SEA
2 stops19h 24mUnited Airlines
Thu 8/283:36 pmSEA - BRU
2 stops32h 14mUnited Airlines
Deal found 7/30$558
This Expedia deal was found by Cheapflights users on 7/31. 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.
Sat 8/3010:20 amBRU - SEA
1 stop16h 30mAer Lingus
Sat 9/67:35 pmSEA - BRU
1 stop16h 05mAer Lingus
Deal found 7/31$564
This Booking.com deal was found by Cheapflights users on 7/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:00 amBRU - SEA
1 stop19h 45mMultiple Airlines
Sat 9/612:00 pmSEA - BRU
1 stop34h 50mMultiple Airlines
Deal found 7/30$575
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:00 amBRU - SEA
2 stops17h 36mAir Canada
Sat 9/65:30 amSEA - BRU
2 stops17h 35mAir Canada
Deal found 7/31$580
This Iberia deal was found by Cheapflights users on 7/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/212:10 pmBRU - SEA
2 stops20h 30mIberia
Sun 9/76:05 amSEA - BRU
2 stops20h 20mIberia
Deal found 7/30$686
This Virgin Atlantic deal was found by Cheapflights users on 7/30. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1810:45 amBRU - SEA
2 stops20h 37mVirgin Atlantic
Wed 10/15:30 amSEA - BRU
2 stops18h 10mVirgin Atlantic
Deal found 7/30$704
This Mytrip deal was found by Cheapflights users on 7/30. 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 8/228:05 pmCRL - SEA
2 stops28h 10mMultiple Airlines
Thu 8/283:45 pmSEA - CRL
2 stops21h 50mMultiple Airlines
Deal found 7/30$1,277

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 July 31, 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

Thu 9/18

1:50 pm-5:50 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-12:50 pm

1 stop12h 05m

$487

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 9/18

2:50 pm-6:20 pm

1 stop12h 30m

Seattle/Tacoma Intl

Wed 10/1

3:00 pm-8:25 pm

2 stops20h 25m

$500

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 8/28

7:00 pm-1:50 pm

2 stops27h 50m

Seattle/Tacoma Intl

Wed 9/10

4:00 pm-3:20 pm

1 stop14h 20m

$528

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 9/10

3:15 pm-11:35 am

1 stop29h 20m

Seattle/Tacoma Intl

Wed 9/24

1:50 pm-8:25 pm

2 stops21h 35m

$532

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 8/22

10:30 am-8:54 pm

2 stops19h 24m

Seattle/Tacoma Intl

Thu 8/28

3:36 pm-8:50 am

2 stops32h 14m

$558

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 8/30

10:20 am-5:50 pm

1 stop16h 30m

Seattle/Tacoma Intl

Sat 9/6

7:35 pm-8:40 pm

1 stop16h 05m

$564

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 8/30

10:00 am-8:45 pm

1 stop19h 45m

Seattle/Tacoma Intl

Sat 9/6

12:00 pm-7:50 am

1 stop34h 50m

$575

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 8/30

10:00 am-6:36 pm

2 stops17h 36m

Seattle/Tacoma Intl

Sat 9/6

5:30 am-8:05 am

2 stops17h 35m

$580

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 9/2

12:10 pm-11:40 pm

2 stops20h 30m

Seattle/Tacoma Intl

Sun 9/7

6:05 am-11:25 am

2 stops20h 20m

$686

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 9/18

10:45 am-10:22 pm

2 stops20h 37m

Seattle/Tacoma Intl

Wed 10/1

5:30 am-8:40 am

2 stops18h 10m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 21 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 $389). 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 July 31, 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 July 31, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and Virgin Atlantic 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
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.4
Good
1,457 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

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

    $584 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Icelandair and Brussels Airlines, with prices starting from $593 and $600, respectively.

  • 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 $389). 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
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
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Shoreline
Federal Way
Shelton

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$524Average$623FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$601Average$626FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$604Average$801FlexibilityNo cancel feeOn-time69%
KLMCheapest$605Average$684FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$611Average$941FlexibilityNo cancel feeOn-time70%
DeltaCheapest$616Average$772FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$631Average$746FlexibilityNo cancel feeOn-time76%
FinnairCheapest$651Average$723FlexibilityNo cancel feeOn-time76%

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