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Cheap flights from Belgium to Seattle from $354

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 3/9. 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
0 bags

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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.
Multiple Airlines Logo
9:25 pm - 10:18 pm
BRU
-
SEA
33h 53m
2 stops
Multiple Airlines Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$565Multiple Airlines
Mon, May 4 - Tue, May 19
Multiple Airlines Logo
7:55 pm - 11:35 am
BRU
-
SEA
24h 40m
1 stop
Multiple Airlines Logo
8:20 pm - 8:25 pm
SEA
-
BRU
15h 05m
1 stop
$581Multiple Airlines
Tue, Jun 16 - Tue, Jul 7
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m
1 stop
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
$594Icelandair
Thu, Feb 5 - Wed, Feb 18
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m
1 stop
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
$600Icelandair
Thu, Feb 5 - Wed, Feb 18
Multiple Airlines Logo
9:15 pm - 11:35 am
BRU
-
SEA
23h 20m
1 stop
Multiple Airlines Logo
8:20 pm - 7:15 pm
SEA
-
BRU
13h 55m
1 stop
$605Multiple Airlines
Thu, Jun 25 - Fri, Jul 10
Multiple Airlines Logo
11:20 am - 11:35 am
BRU
-
SEA
33h 15m
2 stops
Multiple Airlines Logo
8:20 pm - 8:25 pm
SEA
-
BRU
15h 05m
1 stop
$608Multiple Airlines
Tue, Jun 16 - Tue, Jul 7
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$621Icelandair
Thu, Apr 2 - Thu, Apr 16
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
$623Icelandair
Thu, Apr 2 - Fri, Apr 17
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$625Icelandair
Thu, Apr 30 - Fri, May 8
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$627Icelandair
Thu, Apr 30 - Fri, May 8

Icelandair flights from Belgium to Seattle

Our best Icelandair deals on Belgium to Seattle flight tickets
Icelandair
Feb 5
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Feb 18
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
$594
Icelandair
Feb 5
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Feb 18
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
$600
Icelandair
Feb 5
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Feb 18
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
$614

Scandinavian Airlines flights from Belgium to Seattle

Our best Scandinavian Airlines deals on Belgium to Seattle flight tickets
Scandinavian Airlines
May 7
BRU5:45 amBrussels Bruxelles-National
25h 32m
2 stops
SEA10:17 pmSeattle/Tacoma Intl
May 29
SEA3:55 pmSeattle/Tacoma Intl
32h 45m
1 stop
BRU9:40 amBrussels Bruxelles-National
$669
Scandinavian Airlines
Feb 5
BRU10:20 amBrussels Bruxelles-National
22h 02m
2 stops
SEA11:22 pmSeattle/Tacoma Intl
Feb 18
SEA2:00 pmSeattle/Tacoma Intl
19h 35m
2 stops
BRU6:35 pmBrussels Bruxelles-National
$753

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 January 23, 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

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 5/4

9:25 pm-10:18 pm

2 stops33h 53m

Seattle/Tacoma Intl

Tue 5/19

3:40 pm-12:55 pm

1 stop12h 15m

$565

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 6/16

7:55 pm-11:35 am

1 stop24h 40m

Seattle/Tacoma Intl

Tue 7/7

8:20 pm-8:25 pm

1 stop15h 05m

$581

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 2/5

12:50 pm-5:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-11:55 am

1 stop12h 20m

$594

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 2/5

12:50 pm-5:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-11:55 am

1 stop12h 20m

$600

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 6/25

9:15 pm-11:35 am

1 stop23h 20m

Seattle/Tacoma Intl

Fri 7/10

8:20 pm-7:15 pm

1 stop13h 55m

$605

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 6/16

11:20 am-11:35 am

2 stops33h 15m

Seattle/Tacoma Intl

Tue 7/7

8:20 pm-8:25 pm

1 stop15h 05m

$608

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/2

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 4/16

3:40 pm-12:55 pm

1 stop12h 15m

$621

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/2

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 4/17

7:00 pm-12:55 pm

1 stop32h 55m

$623

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/30

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/8

3:40 pm-12:55 pm

1 stop12h 15m

$625

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/30

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/8

3:40 pm-12:55 pm

1 stop12h 15m

$627

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, December 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 $597. If you don’t want to visit Seattle in December, then you should wait until March to fly from Belgium, when ticket prices are also cheap, with an average price of $667.

How far in advance should I book a flight 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 $722 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 $669 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.
Search flight deals

  • 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
9,194 reviews
Search United Airlines flights
IcelandairPriceFrom $586Free CancellationRating
7.1
602 reviews
Search Icelandair flights
British AirwaysPriceFrom $592Free CancellationRating
6.7
7,691 reviews
Search British Airways flights
KLMPriceFrom $605Free CancellationRating
7.7
1,442 reviews
Search KLM flights
DeltaPriceFrom $616Free CancellationRating
7.9
8,097 reviews
Search Delta flights
LufthansaPriceFrom $687Free CancellationRating
6.8
7,744 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
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Centralia
Westport
Kirkland
Fife
Shoreline

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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