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Cheap flights from Seattle to Brussels from $197

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
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
$458Icelandair
Wed, Dec 2 - Sun, Dec 13
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
$458Icelandair
Mon, Dec 7 - Tue, Dec 15
Air Canada Logo
8:40 am - 7:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
38h 10m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
10:00 am - 9:32 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
32h 32m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$569Air Canada
Mon, Dec 7 - Tue, Dec 15
British Airways Logo
6:45 pm - 8:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 10m1 stop London Heathrow
British Airways Logo
8:35 pm - 11:25 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
23h 50m1 stop London Heathrow
$570British Airways
Mon, Nov 30 - Wed, Feb 17
British Airways Logo
6:45 pm - 8:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 10m1 stop London Heathrow
British Airways Logo
5:35 pm - 11:25 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
26h 50m1 stop London Heathrow
$570British Airways
Mon, Nov 30 - Mon, Feb 8
Multiple Airlines Logo
5:05 am - 7:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 45m2 stops Denver Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
10:00 am - 9:32 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
32h 32m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$573Multiple Airlines
Wed, Nov 4 - Wed, Nov 11
United Airlines Logo
10:50 am - 8:55 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
13h 05m1 stop Chicago O'Hare Intl
United Airlines Logo
11:55 am - 8:56 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
18h 01m1 stop Washington, D.C. Dulles Intl
$577United Airlines
Wed, Nov 4 - Wed, Nov 11
United Airlines Logo
7:00 am - 8:55 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 55m1 stop Chicago O'Hare Intl
United Airlines Logo
11:15 am - 9:39 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
19h 24m1 stop Newark
$577United Airlines
Wed, Nov 4 - Wed, Nov 11
Delta Logo
7:22 am - 7:40 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
15h 18m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:55 pm - 11:57 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
20h 02m1 stop Atlanta Hartsfield-Jackson
$607Delta
Mon, Oct 19 - Fri, Nov 13
Delta Logo
10:35 pm - 7:40 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
24h 05m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:55 pm - 11:57 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
20h 02m1 stop Atlanta Hartsfield-Jackson
$607Delta
Sat, Oct 17 - Fri, Nov 13

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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 30
SEA6:45 pmSeattle/Tacoma Intl
17h 10m
1 stop
BRU8:55 pmBrussels Bruxelles-National
Feb 8
BRU5:35 pmBrussels Bruxelles-National
26h 50m
1 stop
SEA11:25 amSeattle/Tacoma Intl
$570
British Airways
Nov 2
SEA6:45 pmSeattle/Tacoma Intl
17h 10m
1 stop
BRU8:55 pmBrussels Bruxelles-National
Nov 9
BRU9:15 pmBrussels Bruxelles-National
23h 10m
1 stop
SEA11:25 amSeattle/Tacoma Intl
$578
British Airways
Nov 30
SEA6:45 pmSeattle/Tacoma Intl
12h 55m
1 stop
BRU4:40 pmBrussels Bruxelles-National
Feb 17
BRU2:00 pmBrussels Bruxelles-National
19h 35m
2 stops
SEA12:35 amSeattle/Tacoma Intl
$580

United Airlines flights from Seattle to Brussels Bruxelles-National Airport

Our best United Airlines deals on Seattle to Brussels Bruxelles-National Airport flight tickets
United Airlines
Nov 4
SEA7:00 amSeattle/Tacoma Intl
16h 55m
1 stop
BRU8:55 amBrussels Bruxelles-National
Nov 12
BRU11:15 amBrussels Bruxelles-National
19h 24m
1 stop
SEA9:39 pmSeattle/Tacoma Intl
$577
United Airlines
Nov 4
SEA8:09 amSeattle/Tacoma Intl
14h 06m
1 stop
BRU7:15 amBrussels Bruxelles-National
Nov 11
BRU10:10 amBrussels Bruxelles-National
20h 09m
2 stops
SEA9:19 pmSeattle/Tacoma Intl
$581
United Airlines
Nov 4
SEA10:50 amSeattle/Tacoma Intl
13h 05m
1 stop
BRU8:55 amBrussels Bruxelles-National
Nov 11
BRU11:55 amBrussels Bruxelles-National
20h 20m
2 stops
SEA11:15 pmSeattle/Tacoma Intl
$582

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
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 12/13

12:50 pm-5:00 pm

1 stop13h 10m

$458

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 12/7

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Tue 12/15

12:50 pm-5:00 pm

1 stop13h 10m

$458

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 12/7

8:40 am-7:50 am

2 stops38h 10m

Brussels Bruxelles-National

Tue 12/15

10:00 am-9:32 am

2 stops32h 32m

$569

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/30

6:45 pm-8:55 pm

1 stop17h 10m

Brussels Bruxelles-National

Wed 2/17

8:35 pm-11:25 am

1 stop23h 50m

$570

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/30

6:45 pm-8:55 pm

1 stop17h 10m

Brussels Bruxelles-National

Mon 2/8

5:35 pm-11:25 am

1 stop26h 50m

$570

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 11/4

5:05 am-7:50 am

2 stops17h 45m

Brussels Bruxelles-National

Wed 11/11

10:00 am-9:32 am

2 stops32h 32m

$573

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 11/4

10:50 am-8:55 am

1 stop13h 05m

Brussels Bruxelles-National

Wed 11/11

11:55 am-8:56 pm

1 stop18h 01m

$577

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 11/4

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Wed 11/11

11:15 am-9:39 pm

1 stop19h 24m

$577

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 10/19

7:22 am-7:40 am

1 stop15h 18m

Brussels Bruxelles-National

Fri 11/13

12:55 pm-11:57 pm

1 stop20h 02m

$607

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sat 10/17

10:35 pm-7:40 am

1 stop24h 05m

Brussels Bruxelles-National

Fri 11/13

12:55 pm-11:57 pm

1 stop20h 02m

$607

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 $538 to $893.
The lowest price recently found on this route was $458.

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 February. 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 February, then book flights to Brussels Bruxelles-National Airport from Seattle during January instead. Flights to Brussels Bruxelles-National Airport in January, while not as cheap as those in February, still average around $510.

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 $759 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 $568 on momondo.

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

You could potentially save up to 19% 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 September 2026, prices for Seattle to Brussels Bruxelles-National Airport flights are approximately 55% cheaper 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

$197

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 $197. The best round-trip flight deal from Seattle to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $458.
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 $381Free CancellationRating
6.9
749 reviews
Search Icelandair flights
British AirwaysPriceFrom $406Free CancellationRating
6.7
8,226 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,576 reviews
Search KLM flights
LufthansaPriceFrom $496Free CancellationRating
6.8
8,234 reviews
Search Lufthansa flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,594 reviews
Search Delta flights
United AirlinesPriceFrom $522Free CancellationRating
7.4
10,233 reviews
Search United Airlines flights

Traveling to a place near Brussels?

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