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$390+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — SEA
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Round-trip from

$599
(Finnair)

One-way from

$390
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$684
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 ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in February 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 febrero 20, 2025.

This StudentUniverse deal was found by Cheapflights users on 2/19. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/51:50 pmBRU - SEA
1 stop15h 50mIcelandair
sáb. 9/273:45 pmSEA - BRU
1 stop12h 05mIcelandair
Deal found 2/19$565
This Finnair deal was found by Cheapflights users on 2/18. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/126:35 amBRU - SEA
1 stop18h 25mFinnair
lun. 5/265:40 pmSEA - BRU
1 stop19h 55mFinnair
Deal found 2/18$599
This Booking.com deal was found by Cheapflights users on 2/20. 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.
mié. 4/210:55 amBRU - SEA
1 stop16h 25mBritish Airways
dom. 4/68:20 pmSEA - BRU
1 stop12h 40mBritish Airways
Deal found 2/20$611
This Booking.com deal was found by Cheapflights users on 2/19. 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.
mar. 3/256:45 amBRU - SEA
1 stop17h 15mMultiple Airlines
mié. 4/305:05 pmSEA - BRU
1 stop18h 35mMultiple Airlines
Deal found 2/19$625
This American Airlines deal was found by Cheapflights users on 2/20. 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.
mié. 4/210:55 amBRU - SEA
2 stops21h 12mAmerican Airlines
dom. 4/611:20 amSEA - BRU
2 stops17h 55mAmerican Airlines
Deal found 2/20$628
This Flighttix deal was found by Cheapflights users on 2/20. 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.
vie. 3/286:45 amBRU - SEA
1 stop15h 35mLufthansa
dom. 4/137:00 amSEA - BRU
1 stop17h 00mLufthansa
Deal found 2/20$671
This Flighttix deal was found by Cheapflights users on 2/20. 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.
jue. 3/610:00 amBRU - SEA
2 stops17h 25mAir Canada
mié. 3/195:55 amSEA - BRU
2 stops18h 00mAir Canada
Deal found 2/20$675
This United Airlines deal was found by Cheapflights users on 2/19. 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.
mar. 3/256:45 amBRU - SEA
2 stops46h 45mUnited Airlines
mié. 4/307:00 amSEA - BRU
1 stop17h 00mUnited Airlines
Deal found 2/19$677
This Flighttix deal was found by Cheapflights users on 2/20. 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.
jue. 3/611:55 amBRU - SEA
1 stop17h 29mBrussels Airlines
mié. 3/198:10 amSEA - BRU
1 stop15h 05mBrussels Airlines
Deal found 2/20$682
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/56:15 amBRU - SEA
1 stop14h 22mDelta
sáb. 3/810:55 pmSEA - BRU
2 stops23h 40mDelta
Deal found 2/19$690
This KLM deal was found by Cheapflights users on 2/20. 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.
lun. 7/1410:25 amBRU - SEA
1 stop14h 20mKLM
lun. 7/282:05 pmSEA - BRU
1 stop15h 30mKLM
Deal found 2/20$806
This Mytrip deal was found by Cheapflights users on 2/20. 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.
jue. 3/63:50 pmCRL - SEA
2 stops41h 09mMultiple Airlines
mié. 3/191:56 pmSEA - CRL
3 stops23h 34mMultiple Airlines
Deal found 2/20$1,026

Find flights from Belgium to Seattle within your budget

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 febrero 20, 2025.

Fly from

Belgium

Fly to

Seattle

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

lun. 5/12

6:35 am-4:00 pm

1 stop18h 25m

Seattle/Tacoma Intl

lun. 5/26

5:40 pm-10:35 pm

1 stop19h 55m

$599

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mié. 4/2

10:55 am-6:20 pm

1 stop16h 25m

Seattle/Tacoma Intl

dom. 4/6

8:20 pm-6:00 pm

1 stop12h 40m

$611

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mar. 3/25

6:45 am-4:00 pm

1 stop17h 15m

Seattle/Tacoma Intl

mié. 4/30

5:05 pm-8:40 pm

1 stop18h 35m

$625

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mié. 4/2

10:55 am-11:07 pm

2 stops21h 12m

Seattle/Tacoma Intl

dom. 4/6

11:20 am-2:15 pm

2 stops17h 55m

$628

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

dom. 5/18

1:50 pm-5:50 pm

1 stop13h 00m

Seattle/Tacoma Intl

sáb. 5/31

7:00 pm-12:50 pm

1 stop32h 50m

$646

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

vie. 3/28

6:45 am-2:20 pm

1 stop15h 35m

Seattle/Tacoma Intl

dom. 4/13

7:00 am-9:00 am

1 stop17h 00m

$671

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 3/6

10:00 am-6:25 pm

2 stops17h 25m

Seattle/Tacoma Intl

mié. 3/19

5:55 am-7:55 am

2 stops18h 00m

$675

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mar. 3/25

6:45 am-9:30 pm

2 stops46h 45m

Seattle/Tacoma Intl

mié. 4/30

7:00 am-9:00 am

1 stop17h 00m

$677

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

jue. 3/6

11:55 am-8:24 pm

1 stop17h 29m

Seattle/Tacoma Intl

mié. 3/19

8:10 am-7:15 am

1 stop15h 05m

$682

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

mié. 3/5

6:15 am-11:37 am

1 stop14h 22m

Seattle/Tacoma Intl

sáb. 3/8

10:55 pm-7:35 am

2 stops23h 40m

$690

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 20 results
1
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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.

Travel insights for flights from Belgium to Seattle

Get recent, data-driven insights about flights from Belgium to Seattle including ideal travel times, pricing trends, and more.

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 July is currently the most expensive (average of $411). 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 febrero 20, 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.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 febrero 20, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Belgium to Seattle to help guide your decision. 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.
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Brussels Airlines
7.4
Good
341 reviews
Delta
8.0
Very good
8,220 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    $614 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Icelandair and United Airlines, with prices starting from $756 and $1,749, 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 July is currently the most expensive (average of $411). 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 Belgium?

Book flights to Belgium if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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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 7 airlines flying from Belgium to Seattle

Discover the top 7 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$524Average$642FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$601Average$819FlexibilityNo cancel feeOn-time76%
KLMCheapest$605Average$819FlexibilityNo cancel feeOn-time75%
DeltaCheapest$616Average$755FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$631Average$780FlexibilityNo cancel feeOn-time76%
FinnairCheapest$651Average$723FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$679Average$941FlexibilityNo cancel feeOn-time70%
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