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Cheap flights from Brussels Bruxelles-National Airport to Seattle from $457

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 10/4. 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.
Multiple Airlines Logo
8:55 pm - 9:04 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
33h 09m3 stops Madrid Barajas Halifax Intl Toronto Pearson Intl
Multiple Airlines Logo
7:00 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
32h 55m1 stop Reykjavik Keflavik Intl
$763Multiple Airlines
Fri, Sep 11 - Fri, Sep 25
Scandinavian Airlines Logo
10:20 am - 1:45 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 25m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
3:55 pm - 7:50 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
18h 55m1 stop Kastrup Copenhagen
$764Scandinavian Airlines
Fri, Sep 25 - Fri, Oct 9
Scandinavian Airlines Logo
10:20 am - 1:45 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 25m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
3:55 pm - 7:50 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
18h 55m1 stop Kastrup Copenhagen
$765Scandinavian Airlines
Fri, Sep 25 - Fri, Oct 9
Multiple Airlines Logo
9:10 pm - 5:55 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
29h 45m3 stops Oslo Gardermoen Stockholm Arlanda Reykjavik Keflavik Intl
Multiple Airlines Logo
3:40 pm - 7:35 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
30h 55m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Amsterdam Schiphol
$794Multiple Airlines
Mon, Oct 5 - Fri, Oct 9
Icelandair Logo
1:50 pm - 8:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
3:40 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 15m1 stop Reykjavik Keflavik Intl
$814Icelandair
Thu, Oct 8 - Sun, Oct 18
Icelandair Logo
1:50 pm - 8:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
Icelandair Logo
7:00 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
32h 55m1 stop Reykjavik Keflavik Intl
$819Icelandair
Thu, Oct 1 - Thu, Oct 15
Lufthansa Logo
6:20 am - 11:55 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 35m1 stop Frankfurt am Main
Lufthansa Logo
7:00 am - 9:00 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 00m1 stop Chicago O'Hare Intl
$849Lufthansa
Fri, Sep 11 - Fri, Sep 25
KLM Logo
8:05 am - 11:47 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 42m1 stop Amsterdam Schiphol
KLM Logo
10:35 am - 9:40 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
14h 05m2 stops Portland Amsterdam Schiphol
$870KLM
Mon, Sep 21 - Mon, Sep 28
Lufthansa Logo
6:20 am - 11:55 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 35m1 stop Frankfurt am Main
Lufthansa Logo
8:25 am - 7:15 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
13h 50m1 stop Washington, D.C. Dulles Intl
$874Lufthansa
Mon, Sep 21 - Mon, Sep 28
KLM Logo
8:05 am - 11:37 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 32m1 stop Amsterdam Schiphol
KLM Logo
5:45 pm - 2:40 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
11h 55m1 stop Amsterdam Schiphol
$888KLM
Mon, Aug 31 - Tue, Sep 29

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Scandinavian Airlines flights from Brussels Bruxelles-National Airport to Seattle

Our best Scandinavian Airlines deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Scandinavian Airlines
Sep 25
BRU10:20 amBrussels Bruxelles-National
12h 25m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
Oct 9
SEA3:55 pmSeattle/Tacoma Intl
18h 55m
1 stop
BRU7:50 pmBrussels Bruxelles-National
$764
Scandinavian Airlines
Sep 25
BRU10:20 amBrussels Bruxelles-National
12h 25m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
Oct 9
SEA3:55 pmSeattle/Tacoma Intl
18h 55m
1 stop
BRU7:50 pmBrussels Bruxelles-National
$765
Scandinavian Airlines
Sep 25
BRU10:20 amBrussels Bruxelles-National
12h 25m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
Oct 9
SEA3:55 pmSeattle/Tacoma Intl
18h 55m
1 stop
BRU7:50 pmBrussels Bruxelles-National
$766

Icelandair flights from Brussels Bruxelles-National Airport to Seattle

Our best Icelandair deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Icelandair
Oct 8
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 18
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$814
Icelandair
Oct 1
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Oct 15
SEA7:00 pmSeattle/Tacoma Intl
32h 55m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$819
Icelandair
Sep 3
BRU1:50 pmBrussels Bruxelles-National
13h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
Sep 18
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
BRU12:55 pmBrussels Bruxelles-National
$829

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 August 10, 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 Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Fri 9/11

8:55 pm-9:04 pm

3 stops33h 09m

Seattle/Tacoma Intl

Fri 9/25

7:00 pm-12:55 pm

1 stop32h 55m

$763

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Fri 9/25

10:20 am-1:45 pm

1 stop12h 25m

Seattle/Tacoma Intl

Fri 10/9

3:55 pm-7:50 pm

1 stop18h 55m

$764

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Fri 9/25

10:20 am-1:45 pm

1 stop12h 25m

Seattle/Tacoma Intl

Fri 10/9

3:55 pm-7:50 pm

1 stop18h 55m

$765

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Mon 10/5

9:10 pm-5:55 pm

3 stops29h 45m

Seattle/Tacoma Intl

Fri 10/9

3:40 pm-7:35 am

3 stops30h 55m

$794

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Thu 10/8

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-12:55 pm

1 stop12h 15m

$814

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Thu 10/1

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Thu 10/15

7:00 pm-12:55 pm

1 stop32h 55m

$819

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Fri 9/11

6:20 am-11:55 am

1 stop14h 35m

Seattle/Tacoma Intl

Fri 9/25

7:00 am-9:00 am

1 stop17h 00m

$849

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Mon 9/21

8:05 am-11:47 am

1 stop12h 42m

Seattle/Tacoma Intl

Mon 9/28

10:35 am-9:40 am

2 stops14h 05m

$870

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Mon 9/21

6:20 am-11:55 am

1 stop14h 35m

Seattle/Tacoma Intl

Mon 9/28

8:25 am-7:15 am

1 stop13h 50m

$874
Quickest round-trip

BrusselsSeattle

BRU Brussels Bruxelles-National - SEA Seattle/Tacoma Intl

BRUSEA

Brussels Bruxelles-National

Mon 8/31

8:05 am-11:37 am

1 stop12h 32m

Seattle/Tacoma Intl

Tue 9/29

5:45 pm-2:40 pm

1 stop11h 55m

$888

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $693 to $998.
The lowest price recently found on this route was $763.

What is the cheapest month to fly to Seattle?

In general, October 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 $747. If you don’t want to visit Seattle in October, then you should wait until May to fly from Brussels Bruxelles-National Airport, when ticket prices are also cheap, with an average price of $769.

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 $913 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 $730 on momondo.

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

As of August 2026, prices for Brussels Bruxelles-National Airport to Seattle flights are approximately 8% cheaper 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
IcelandairPriceFrom $529Free CancellationRating
6.9
728 reviews
Search Icelandair flights
United AirlinesPriceFrom $584Free CancellationRating
7.4
10,100 reviews
Search United Airlines flights
British AirwaysPriceFrom $586Free CancellationRating
6.7
8,155 reviews
Search British Airways flights
KLMPriceFrom $676Free CancellationRating
7.8
1,555 reviews
Search KLM flights
Scandinavian AirlinesPriceFrom $711Free CancellationRating
7.4
1,940 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $823Free CancellationRating
6.8
8,174 reviews
Search Lufthansa flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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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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