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Cheap flights from Brussels Bruxelles-National Airport to Seattle from $441

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Brussels Bruxelles-National Airport to Seattle departing on 9/3. 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 Brussels Bruxelles-National Airport to Seattle

Cheap round-trip flights

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
Aer Lingus Logo
10:20 am - 5:10 pm
BRU
-
SEA
15h 50m
1 stop
Aer Lingus Logo
7:10 pm - 8:45 pm
SEA
-
BRU
16h 35m
1 stop
$750Aer Lingus
Fri, Aug 21 - Thu, Aug 27
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
Multiple Airlines Logo
9:25 pm - 9:40 am
BRU
-
SEA
45h 15m
3 stops
Multiple Airlines Logo
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
$774Multiple Airlines
Wed, Aug 19 - Fri, Aug 28
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
$781Scandinavian Airlines
Sat, Sep 12 - Sat, Sep 19
Scandinavian Airlines Logo
8:30 pm - 1:45 pm
BRU
-
SEA
26h 15m
1 stop
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m
1 stop
$784Scandinavian Airlines
Sat, Sep 5 - Sat, Sep 12
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
$788Scandinavian 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
Finnair Logo
6:30 am - 4:00 pm
BRU
-
SEA
18h 30m
1 stop
Finnair Logo
5:40 pm - 10:35 pm
SEA
-
BRU
19h 55m
1 stop
$790Finnair
Fri, Sep 4 - Mon, Sep 21
Multiple Airlines Logo
9:25 pm - 9:40 am
BRU
-
SEA
45h 15m
3 stops
Multiple Airlines Logo
3:40 pm - 4:25 pm
SEA
-
BRU
15h 45m
2 stops
$791Multiple Airlines
Wed, Aug 19 - Sat, Aug 29

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Delta flights from Brussels Bruxelles-National Airport to Seattle

Our best Delta deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Delta
Sep 3
BRU8:05 amBrussels Bruxelles-National
17h 30m
1 stop
SEA4:35 pmSeattle/Tacoma Intl
Sep 16
SEA6:00 amSeattle/Tacoma Intl
16h 35m
2 stops
BRU7:35 amBrussels Bruxelles-National
$841
Delta
Sep 12
BRU8:05 amBrussels Bruxelles-National
19h 25m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
Sep 19
SEA6:00 amSeattle/Tacoma Intl
16h 40m
1 stop
BRU7:40 amBrussels Bruxelles-National
$843
Delta
Sep 12
BRU8:05 amBrussels Bruxelles-National
19h 25m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
Sep 19
SEA6:00 amSeattle/Tacoma Intl
16h 40m
1 stop
BRU7:40 amBrussels Bruxelles-National
$844

Icelandair flights from Brussels Bruxelles-National Airport to Seattle

Our best Icelandair deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Icelandair
Jun 28
BRU1:50 pmBrussels Bruxelles-National
30h 55m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Jul 11
SEA7:00 pmSeattle/Tacoma Intl
32h 55m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$818
Icelandair
Jul 4
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Jul 17
SEA11:25 pmSeattle/Tacoma Intl
28h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$823
Icelandair
Jun 28
BRU1:50 pmBrussels Bruxelles-National
30h 55m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Jul 11
SEA11:25 pmSeattle/Tacoma Intl
28h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$825

momondo Fare Finder

 
Customize your flight search to find flights from Brussels Bruxelles-National Airport 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 21, 2026.
Use the filters below to find and compare flights from Brussels Bruxelles-National Airport 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
Quickest round-trip

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 8/21

10:20 am-5:10 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 8/27

7:10 pm-8:45 pm

1 stop16h 35m

$750

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

Wed 8/19

9:25 pm-9:40 am

3 stops45h 15m

Seattle/Tacoma Intl

Fri 8/28

7:00 pm-12:55 pm

1 stop32h 55m

$774

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

$781

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/5

8:30 pm-1:45 pm

1 stop26h 15m

Seattle/Tacoma Intl

Sat 9/12

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

$788

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

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 9/4

6:30 am-4:00 pm

1 stop18h 30m

Seattle/Tacoma Intl

Mon 9/21

5:40 pm-10:35 pm

1 stop19h 55m

$790

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 8/19

9:25 pm-9:40 am

3 stops45h 15m

Seattle/Tacoma Intl

Sat 8/29

3:40 pm-4:25 pm

2 stops15h 45m

$791

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 Brussels Bruxelles-National Airport 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 typical price of a round-trip flight between Brussels Bruxelles-National Airport and Seattle?

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Brussels Bruxelles-National Airport 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 August to fly from Brussels Bruxelles-National Airport, when ticket prices are also cheap, with an average price of $708.

How far in advance should I book a flight from Brussels Bruxelles-National Airport to Seattle?

You are more likely to see cheaper flights to Seattle from Brussels Bruxelles-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $849 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Brussels Bruxelles-National Airport for as low as $690 on momondo.

How have Brussels Bruxelles-National Airport to Seattle flight prices changed over time?

As of June 2026, prices for Brussels Bruxelles-National Airport to Seattle flights are approximately 0% more expensive when compared to flights at the same time last year.

When to book flights from Brussels Bruxelles-National Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Brussels Bruxelles-National Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Brussels Bruxelles-National Airport to Seattle (BRU to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Brussels Bruxelles-National Airport to Seattle

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Brussels Bruxelles-National Airport to Seattle takes 12h 25m
There are no direct flights from Brussels Bruxelles-National Airport to Seattle. There are no popular flight routes from Brussels Bruxelles-National Airport to Seattle.
Search flight deals

Frequently asked questions about flying from Brussels Bruxelles-National Airport to Seattle

  • How far is Brussels Bruxelles-National to Seattle/Tacoma Intl by plane?

    There are 4932.2 mi between Brussels Bruxelles-National and Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 12h 25m.

  • When did momondo last update prices for flights from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport.

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

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Brussels Bruxelles-National Airport to Seattle?

Best airlines flying from Brussels Bruxelles-National Airport to Seattle

Compare and see reviews for airlines that fly from Brussels Bruxelles-National Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $584Free CancellationRating
7.4
9,868 reviews
Search United Airlines flights
British AirwaysPriceFrom $586Free CancellationRating
6.7
8,062 reviews
Search British Airways flights
IcelandairPriceFrom $604Free CancellationRating
7.0
680 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $628Free CancellationRating
7.4
1,842 reviews
Search Scandinavian Airlines flights
KLMPriceFrom $676Free CancellationRating
7.8
1,530 reviews
Search KLM flights
LufthansaPriceFrom $823Free CancellationRating
6.8
8,086 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 Brussels to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Brussels.

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

Yes. momondo allows you to filter the results for Brussels to Seattle flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Brussels.

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

Yes momondo offers price alerts on flights to Seattle from Brussels. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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