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Cheap flights from Belgium to Seattle from $398

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Belgium to Seattle departing on 9/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Belgium to Seattle

Recent round-trip flight deals from Belgium to Seattle

Enter your travel dates to find the best prices.
Aer Lingus Logo
10:20 am - 5:10 pm
BRU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
7:10 pm - 8:10 pm
SEA
-
BRU
17h 00m
1 stop
$652Aer Lingus
Thu, Oct 8 - Sat, Oct 24
Multiple Airlines Logo
6:20 am - 11:12 pm
BRU
-
SEA
25h 52m
2 stops
Multiple Airlines Logo
6:00 pm - 8:40 pm
SEA
-
BRU
17h 40m
1 stop
$764Multiple Airlines
Wed, Sep 2 - Fri, Sep 25
Scandinavian Airlines Logo
10:20 am - 1:45 pm
BRU
-
SEA
12h 25m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$771Scandinavian Airlines
Tue, Sep 1 - Fri, Sep 18
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$782Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
10:20 am - 1:45 pm
BRU
-
SEA
12h 25m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$784Scandinavian Airlines
Tue, Sep 1 - Sun, Sep 20
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$786Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$789Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Icelandair Logo
1:50 pm - 8:40 pm
BRU
-
SEA
15h 50m
1 stop
Icelandair Logo
3:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
$792Icelandair
Sat, Oct 17 - Sat, Oct 31
Scandinavian Airlines Logo
10:20 am - 1:45 pm
BRU
-
SEA
12h 25m
1 stop
Scandinavian Airlines Logo
3:55 pm - 6:20 pm
SEA
-
BRU
17h 25m
2 stops
$799Scandinavian Airlines
Fri, Aug 28 - Sat, Sep 5
Scandinavian Airlines Logo
3:15 pm - 1:45 pm
BRU
-
SEA
31h 30m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$800Scandinavian Airlines
Fri, Sep 11 - Sun, Sep 20

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British Airways flights from Belgium to Seattle

Our best British Airways deals on Belgium to Seattle flight tickets
British Airways
Sep 27
BRU8:40 pmBrussels Bruxelles-National
23h 55m
1 stop
SEA11:35 amSeattle/Tacoma Intl
Oct 17
SEA1:30 pmSeattle/Tacoma Intl
15h 50m
1 stop
BRU2:20 pmBrussels Bruxelles-National
$838
British Airways
Aug 31
BRU10:50 amBrussels Bruxelles-National
16h 35m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
Sep 10
SEA1:30 pmSeattle/Tacoma Intl
22h 10m
1 stop
BRU8:40 pmBrussels Bruxelles-National
$839
British Airways
Nov 2
BRU8:45 pmBrussels Bruxelles-National
23h 45m
1 stop
SEA11:30 amSeattle/Tacoma Intl
Nov 22
SEA2:46 pmSeattle/Tacoma Intl
16h 54m
2 stops
BRU4:40 pmBrussels Bruxelles-National
$841

Delta flights from Belgium to Seattle

Our best Delta deals on Belgium to Seattle flight tickets
Delta
Sep 12
BRU8:05 amBrussels Bruxelles-National
12h 42m
1 stop
SEA11:47 amSeattle/Tacoma Intl
Sep 19
SEA11:59 pmSeattle/Tacoma Intl
22h 36m
2 stops
BRU7:35 amBrussels Bruxelles-National
$847
Delta
Sep 11
BRU10:25 amBrussels Bruxelles-National
17h 39m
2 stops
SEA7:04 pmSeattle/Tacoma Intl
Sep 20
SEA7:30 amSeattle/Tacoma Intl
17h 10m
2 stops
BRU9:40 amBrussels Bruxelles-National
$848
Delta
Sep 12
BRU8:05 amBrussels Bruxelles-National
12h 42m
1 stop
SEA11:47 amSeattle/Tacoma Intl
Sep 19
SEA11:59 pmSeattle/Tacoma Intl
22h 36m
2 stops
BRU7:35 amBrussels Bruxelles-National
$849

momondo 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, momondo users made 832,500 searches. Data last updated June 19, 2026.
Use the filters below to find and compare flights from Belgium to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 10/8

10:20 am-5:10 pm

1 stop15h 50m

Seattle/Tacoma Intl

Sat 10/24

7:10 pm-8:10 pm

1 stop17h 00m

$652

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 9/2

6:20 am-11:12 pm

2 stops25h 52m

Seattle/Tacoma Intl

Fri 9/25

6:00 pm-8:40 pm

1 stop17h 40m

$764

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 9/1

10:20 am-1:45 pm

1 stop12h 25m

Seattle/Tacoma Intl

Fri 9/18

3:55 pm-9:40 am

1 stop32h 45m

$771

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/12

3:15 pm-1:45 pm

1 stop31h 30m

Seattle/Tacoma Intl

Sat 9/19

3:55 pm-9:40 am

1 stop32h 45m

$782

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 9/1

10:20 am-1:45 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sun 9/20

3:55 pm-9:40 am

1 stop32h 45m

$784

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/12

3:15 pm-1:45 pm

1 stop31h 30m

Seattle/Tacoma Intl

Sat 9/19

3:55 pm-9:40 am

1 stop32h 45m

$786

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/12

3:15 pm-1:45 pm

1 stop31h 30m

Seattle/Tacoma Intl

Sat 9/19

3:55 pm-9:40 am

1 stop32h 45m

$789
Quickest round-trip

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 10/17

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Sat 10/31

3:35 pm-11:55 am

1 stop12h 20m

$792

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 8/28

10:20 am-1:45 pm

1 stop12h 25m

Seattle/Tacoma Intl

Sat 9/5

3:55 pm-6:20 pm

2 stops17h 25m

$799

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 9/11

3:15 pm-1:45 pm

1 stop31h 30m

Seattle/Tacoma Intl

Sun 9/20

3:55 pm-9:40 am

1 stop32h 45m

$800

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seattle from

How to get the cheapest flight ticket from Belgium to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

In general, January is the cheapest month to fly from Belgium to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $452. If you don’t want to visit Seattle in January, then you should wait until August to fly from Belgium, when ticket prices are also cheap, with an average price of $495.

How far in advance should I book a flight from Belgium to Seattle?

You are more likely to see cheaper flights to Seattle from Belgium when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $832 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Belgium for as low as $690 on momondo.

Cheap Belgium to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belgium to Seattle

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Belgium to Seattle takes 13h 05m
There are no direct flights from Belgium to Seattle. There are no popular flight routes from Belgium to Seattle.
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Frequently asked questions about flying from Belgium to Seattle

  • When did momondo last update prices for flights from Belgium to Seattle/Tacoma Intl Airport?

    Prices for flights from Belgium to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from Belgium to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Belgium to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Belgium to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Belgium to Seattle

Compare and see reviews for airlines that fly from Belgium to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $584Free CancellationRating
7.4
9,861 reviews
Search United Airlines flights
British AirwaysPriceFrom $586Free CancellationRating
6.7
8,055 reviews
Search British Airways flights
IcelandairPriceFrom $604Free CancellationRating
7.0
679 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $628Free CancellationRating
7.4
1,832 reviews
Search Scandinavian Airlines flights
KLMPriceFrom $676Free CancellationRating
7.8
1,530 reviews
Search KLM flights
LufthansaPriceFrom $823Free CancellationRating
6.8
8,074 reviews
Search Lufthansa flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Lakewood
Puyallup
Tukwila
Federal Way
Fife
Cle Elum
Marysville
Centralia
Shoreline
Kirkland
Westport

Why use momondo?

Why should I use momondo to find a flight deal from Belgium to Seattle?

Finding the right flight to Seattle from Belgium is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Belgium to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Belgium with this policy.

How can momondo help me find flights from Belgium to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Belgium to Seattle.

I’m not ready to book a flight from Belgium to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Belgium and alert you when they change.

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