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Cheap flights from Brussels Bruxelles-National Airport 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 Brussels Bruxelles-National Airport to Seattle departing on 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Brussels Bruxelles-National Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
11:50 am - 4:55 pm
BRU
-
SEA
14h 05m1 stop
British Airways Logo
7:50 pm - 4:40 pm
SEA
-
BRU
12h 50m1 stop
$599British Airways
Mon, Mar 2 - Mon, Mar 9
Scandinavian Airlines Logo
5:45 am - 10:17 pm
BRU
-
SEA
25h 32m2 stops
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m1 stop
$625Scandinavian Airlines
Fri, May 8 - Sat, May 30
Scandinavian Airlines Logo
10:20 am - 12:22 am
BRU
-
SEA
23h 02m2 stops
Scandinavian Airlines Logo
3:55 pm - 9:40 am
SEA
-
BRU
32h 45m1 stop
$640Scandinavian Airlines
Fri, May 8 - Sat, May 30
Scandinavian Airlines Logo
5:45 am - 12:22 am
BRU
-
SEA
27h 37m2 stops
Scandinavian Airlines Logo
3:55 pm - 7:50 pm
SEA
-
BRU
18h 55m1 stop
$641Scandinavian Airlines
Thu, May 7 - Fri, May 29
Scandinavian Airlines Logo
5:45 am - 12:22 am
BRU
-
SEA
27h 37m2 stops
Scandinavian Airlines Logo
3:55 pm - 7:50 pm
SEA
-
BRU
18h 55m1 stop
$642Scandinavian Airlines
Thu, May 7 - Fri, May 29
Scandinavian Airlines Logo
5:45 am - 12:22 am
BRU
-
SEA
27h 37m2 stops
Scandinavian Airlines Logo
3:55 pm - 12:00 pm
SEA
-
BRU
35h 05m2 stops
$644Scandinavian Airlines
Thu, May 7 - Fri, May 29
Scandinavian Airlines Logo
5:45 am - 12:22 am
BRU
-
SEA
27h 37m2 stops
Scandinavian Airlines Logo
3:55 pm - 12:00 pm
SEA
-
BRU
35h 05m2 stops
$645Scandinavian Airlines
Thu, May 7 - Fri, May 29
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m1 stop
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m1 stop
$648Icelandair
Thu, Jan 15 - Sat, Jan 31
Lufthansa Logo
7:00 am - 12:10 pm
BRU
-
SEA
14h 10m1 stop
Lufthansa Logo
10:05 am - 12:35 pm
SEA
-
BRU
17h 30m2 stops
$658Lufthansa
Thu, Jan 22 - Thu, Feb 5
Lufthansa Logo
9:00 am - 8:57 pm
BRU
-
SEA
20h 57m2 stops
Lufthansa Logo
7:00 am - 8:55 am
SEA
-
BRU
16h 55m1 stop
$665Lufthansa
Mon, Jan 19 - Mon, Feb 2

Icelandair flights from Brussels Bruxelles-National Airport to Seattle

Our best Icelandair deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Icelandair
Jan 15
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Jan 31
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
$648
Find similar
Icelandair
Jan 15
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Jan 28
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
$667
Find similar

United Airlines flights from Brussels Bruxelles-National Airport to Seattle

Our best United Airlines deals on Brussels Bruxelles-National Airport to Seattle flight tickets
United Airlines
Jan 15
BRU7:00 amBrussels Bruxelles-National
14h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
Jan 19
SEA8:10 amSeattle/Tacoma Intl
20h 05m
2 stops
BRU1:15 pmBrussels Bruxelles-National
$689
Find similar
United Airlines
Jan 19
BRU7:00 amBrussels Bruxelles-National
14h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
Feb 2
SEA7:00 amSeattle/Tacoma Intl
16h 55m
1 stop
BRU8:55 amBrussels Bruxelles-National
$690
Find similar
United Airlines
Jan 21
BRU7:00 amBrussels Bruxelles-National
20h 26m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
Feb 26
SEA9:00 amSeattle/Tacoma Intl
19h 15m
3 stops
BRU1:15 pmBrussels Bruxelles-National
$694
Find similar

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 December 4, 2025.
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

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 3/2

11:50 am-4:55 pm

1 stop14h 05m

Seattle/Tacoma Intl

Mon 3/9

7:50 pm-4:40 pm

1 stop12h 50m

$599

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 5/8

5:45 am-10:17 pm

2 stops25h 32m

Seattle/Tacoma Intl

Sat 5/30

3:55 pm-9:40 am

1 stop32h 45m

$625

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 5/8

10:20 am-12:22 am

2 stops23h 02m

Seattle/Tacoma Intl

Sat 5/30

3:55 pm-9:40 am

1 stop32h 45m

$640

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 5/7

5:45 am-12:22 am

2 stops27h 37m

Seattle/Tacoma Intl

Fri 5/29

3:55 pm-7:50 pm

1 stop18h 55m

$641

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 5/7

5:45 am-12:22 am

2 stops27h 37m

Seattle/Tacoma Intl

Fri 5/29

3:55 pm-7:50 pm

1 stop18h 55m

$642

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 5/7

5:45 am-12:22 am

2 stops27h 37m

Seattle/Tacoma Intl

Fri 5/29

3:55 pm-12:00 pm

2 stops35h 05m

$644

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 5/7

5:45 am-12:22 am

2 stops27h 37m

Seattle/Tacoma Intl

Fri 5/29

3:55 pm-12:00 pm

2 stops35h 05m

$645

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 1/15

12:50 pm-5:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

Sat 1/31

2:35 pm-11:55 am

1 stop12h 20m

$648

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 1/22

7:00 am-12:10 pm

1 stop14h 10m

Seattle/Tacoma Intl

Thu 2/5

10:05 am-12:35 pm

2 stops17h 30m

$658

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 1/19

9:00 am-8:57 pm

2 stops20h 57m

Seattle/Tacoma Intl

Mon 2/2

7:00 am-8:55 am

1 stop16h 55m

$665

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 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 $623. If you don’t want to visit Seattle in December, then you should wait until January to fly from Brussels Bruxelles-National Airport, when ticket prices are also cheap, with an average price of $624.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Brussels Bruxelles-National Airport is on a Sunday. momondo users have found tickets for Sunday departures for as low as $696. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Brussels Bruxelles-National Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $979.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Brussels Bruxelles-National Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $956. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight 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 $713 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 $645 on momondo.

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

As of December 2025, prices for Brussels Bruxelles-National Airport to Seattle flights are approximately 13% 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

13h 10m

Direct flights

None
The fastest flight from Brussels Bruxelles-National Airport to Seattle takes 13h 10m
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

  • 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 13h 10m.

  • 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
Aer LingusPriceFrom $524Free CancellationRating
7.2
1,384 reviews
Search Aer Lingus flights
IcelandairPriceFrom $586Free CancellationRating
7.0
584 reviews
Search Icelandair flights
British AirwaysPriceFrom $592Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
United AirlinesPriceFrom $597Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
KLMPriceFrom $605Free CancellationRating
7.7
1,430 reviews
Search KLM flights
DeltaPriceFrom $616Free CancellationRating
7.9
8,011 reviews
Search Delta flights
FinnairPriceFrom $651Free CancellationRating
7.6
1,334 reviews
Search Finnair flights
LufthansaPriceFrom $674Free CancellationRating
6.8
7,612 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
Puyallup
Marysville
Tukwila
Redmond
Cle Elum
Federal Way
Lakewood
Fife
Centralia
Westport
Kirkland
Shoreline

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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