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Cheap flights from Seattle to Brussels from $235

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:00 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
32h 55m1 stop Reykjavik Keflavik Intl
Icelandair Logo
1:50 pm - 5:55 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 05m1 stop Reykjavik Keflavik Intl
$507Icelandair
Mon, Oct 5 - Sun, Oct 18
Icelandair Logo
2:35 pm - 11:55 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 20m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:50 pm - 5:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 10m1 stop Reykjavik Keflavik Intl
$510Icelandair
Wed, Dec 2 - Sun, Dec 6
Scandinavian Airlines Logo
3:55 pm - 2:35 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
13h 40m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
8:30 pm - 1:45 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
26h 15m1 stop Kastrup Copenhagen
$572Scandinavian Airlines
Sat, Oct 3 - Sat, Oct 10
Multiple Airlines Logo
8:21 am - 9:35 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 14m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
10:15 am - 7:43 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
18h 28m2 stops Dublin Toronto Pearson Intl
$579Multiple Airlines
Fri, Feb 12 - Tue, Feb 16
British Airways Logo
1:30 pm - 5:05 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
18h 35m1 stop London Heathrow
British Airways Logo
12:05 pm - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
$720British Airways
Tue, Nov 3 - Tue, Nov 10
British Airways Logo
1:30 pm - 5:05 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
18h 35m1 stop London Heathrow
British Airways Logo
12:05 pm - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
$721British Airways
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
11:15 pm - 8:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
24h 35m2 stops Newark London Heathrow
United Airlines Logo
10:10 am - 7:03 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
17h 53m1 stop Chicago O'Hare Intl
$724United Airlines
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
7:00 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
21h 15m2 stops Chicago O'Hare Intl London Heathrow
United Airlines Logo
10:10 am - 7:03 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
17h 53m1 stop Chicago O'Hare Intl
$724United Airlines
Tue, Nov 3 - Tue, Nov 10
Delta Logo
6:00 am - 11:00 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
20h 00m1 stop Atlanta Hartsfield-Jackson
Delta Logo
6:10 am - 11:50 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 40m1 stop Amsterdam Schiphol
$726Delta
Tue, Dec 1 - Tue, Dec 8
Delta Logo
3:55 pm - 11:00 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
34h 05m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:45 am - 11:47 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
34h 02m1 stop Amsterdam Schiphol
$730Delta
Mon, Nov 2 - Mon, Nov 9

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Icelandair flights from Seattle to Brussels Bruxelles-National Airport

Our best Icelandair deals on Seattle to Brussels Bruxelles-National Airport flight tickets
Icelandair
Oct 5
SEA7:00 pmSeattle/Tacoma Intl
32h 55m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Oct 18
BRU1:50 pmBrussels Bruxelles-National
13h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$507
Icelandair
Dec 2
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Dec 6
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$510
Icelandair
Oct 18
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Nov 3
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$511

British Airways flights from Seattle to Brussels Bruxelles-National Airport

Our best British Airways deals on Seattle to Brussels Bruxelles-National Airport flight tickets
British Airways
Nov 3
SEA1:30 pmSeattle/Tacoma Intl
18h 35m
1 stop
BRU5:05 pmBrussels Bruxelles-National
Nov 10
BRU12:05 pmBrussels Bruxelles-National
13h 45m
1 stop
SEA4:50 pmSeattle/Tacoma Intl
$720
British Airways
Nov 3
SEA1:30 pmSeattle/Tacoma Intl
18h 35m
1 stop
BRU5:05 pmBrussels Bruxelles-National
Nov 10
BRU12:05 pmBrussels Bruxelles-National
13h 45m
1 stop
SEA4:50 pmSeattle/Tacoma Intl
$721
British Airways
Aug 25
SEA3:50 pmSeattle/Tacoma Intl
33h 05m
2 stops
BRU9:55 amBrussels Bruxelles-National
Sep 5
BRU8:05 pmBrussels Bruxelles-National
31h 20m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$1,649

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 10/5

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Sun 10/18

1:50 pm-5:55 pm

1 stop13h 05m

$507
Quickest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 12/2

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Sun 12/6

12:50 pm-5:00 pm

1 stop13h 10m

$510

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sat 10/3

3:55 pm-2:35 pm

1 stop13h 40m

Brussels Bruxelles-National

Sat 10/10

8:30 pm-1:45 pm

1 stop26h 15m

$572

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Fri 2/12

8:21 am-9:35 am

2 stops16h 14m

Brussels Bruxelles-National

Tue 2/16

10:15 am-7:43 pm

2 stops18h 28m

$579

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

1:30 pm-5:05 pm

1 stop18h 35m

Brussels Bruxelles-National

Tue 11/10

12:05 pm-4:50 pm

1 stop13h 45m

$720

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

1:30 pm-5:05 pm

1 stop18h 35m

Brussels Bruxelles-National

Tue 11/10

12:05 pm-4:50 pm

1 stop13h 45m

$721

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

11:15 pm-8:50 am

2 stops24h 35m

Brussels Bruxelles-National

Tue 11/10

10:10 am-7:03 pm

1 stop17h 53m

$724

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

7:00 am-1:15 pm

2 stops21h 15m

Brussels Bruxelles-National

Tue 11/10

10:10 am-7:03 pm

1 stop17h 53m

$724

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 12/1

6:00 am-11:00 am

1 stop20h 00m

Brussels Bruxelles-National

Tue 12/8

6:10 am-11:50 am

1 stop14h 40m

$726

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/2

3:55 pm-11:00 am

1 stop34h 05m

Brussels Bruxelles-National

Mon 11/9

10:45 am-11:47 am

1 stop34h 02m

$730

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 Brussels from

How to get the cheapest flight ticket from Seattle to Brussels Bruxelles-National Airport

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 Seattle and Brussels Bruxelles-National Airport?

Prices are currently low for flights on this route.

Typical prices usually range from $625 to $858.
The lowest price recently found on this route was $507.

What is the cheapest month to fly to Brussels Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from Seattle is in January. Flight prices, which tend to average around $510, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Brussels Bruxelles-National Airport from Seattle during February instead. Flights to Brussels Bruxelles-National Airport in February, while not as cheap as those in January, still average around $556.

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

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $715 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels Bruxelles-National Airport from Seattle for as low as $503 on momondo.

Can stopping save me money on Seattle to Brussels Bruxelles-National Airport flights?

You could potentially save up to 23% on your flight if you consider stops on a Seattle to Brussels Bruxelles-National Airport flight.

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

As of August 2026, prices for Seattle to Brussels Bruxelles-National Airport flights are approximately 12% more expensive when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$235

Fastest flight time

12h 15m

Direct flights

None
The best one-way flight to Brussels Bruxelles-National Airport from Seattle in the past 72 hours is $235. The best round-trip flight deal from Seattle to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $507.
The fastest flight from Seattle to Brussels Bruxelles-National Airport takes 12h 15m
There are no direct flights from Seattle to Brussels Bruxelles-National Airport. There are no popular flight routes from Seattle to Brussels Bruxelles-National Airport.
Search flight deals

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

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

    The straight-line distance from Seattle/Tacoma Intl to Brussels Bruxelles-National is 4932.2 mi. Typically, this will take 12h 15m by plane in normal conditions.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Brussels Bruxelles-National Airport.

  • What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

    The travel and health documents required for your trip to Brussels Bruxelles-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Brussels Bruxelles-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from Seattle to Brussels Bruxelles-National Airport

Compare and see reviews for airlines that fly from Seattle to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $382Free CancellationRating
6.9
730 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
8,181 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,560 reviews
Search KLM flights
LufthansaPriceFrom $494Free CancellationRating
6.8
8,202 reviews
Search Lufthansa flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
10,105 reviews
Search United Airlines flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,511 reviews
Search Delta flights

Traveling to a place near Brussels?

Book flights to Brussels if you plan to visit one of these locations
Bruges
Ghent
Leuven
Dinant
Mons
Durbuy
Zaventem
Charleroi
Genk
Aalst
Waterloo
Namur
Spa
Mechelen
Knokke-Heist
Hasselt
Francorchamps
Halle

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Brussels. Millions of users trust and use momondo every year so you are in good hands.

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

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

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

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 Seattle to Brussels.

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

Yes. momondo can track prices for Seattle to Brussels flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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