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Cheap flights from Seattle to Brussels from $238

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Brussels departing on 10/13. 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 Seattle to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 15m1 stop Reykjavik Keflavik Intl
Icelandair Logo
1:50 pm - 8:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
$552Icelandair
Sun, Oct 4 - Sun, Oct 18
Icelandair Logo
3:40 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 15m1 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
$552Icelandair
Sat, Oct 3 - Mon, Oct 12
Scandinavian Airlines Logo
3:55 pm - 8:30 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
19h 35m2 stops Kastrup Copenhagen Oslo Gardermoen
Scandinavian Airlines Logo
11:20 am - 1:45 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
35h 25m2 stops Oslo Gardermoen Kastrup Copenhagen
$669Scandinavian Airlines
Tue, Sep 15 - Thu, Sep 24
Multiple Airlines Logo
3:15 pm - 8:10 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
19h 55m2 stops Vancouver Intl London Heathrow
Multiple Airlines Logo
9:10 am - 1:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 50m1 stop Munich Franz Josef Strauss
$690Multiple Airlines
Sun, Nov 1 - Fri, Dec 18
Lufthansa Logo
2:50 pm - 1:10 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
13h 20m1 stop Munich Franz Josef Strauss
Lufthansa Logo
6:45 am - 1:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 15m1 stop Munich Franz Josef Strauss
$707Lufthansa
Sun, Nov 1 - Fri, Dec 18
Lufthansa Logo
10:10 am - 7:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
36h 40m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Lufthansa Logo
10:00 am - 9:27 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
32h 27m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$707Lufthansa
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
8:00 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
20h 15m2 stops Washington, D.C. Dulles Intl London Heathrow
United Airlines Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$720United Airlines
Wed, Dec 2 - Wed, Dec 9
United Airlines Logo
5:05 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
23h 10m2 stops Denver Intl London Heathrow
United Airlines Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$720United Airlines
Sun, Nov 29 - Wed, Dec 9
Delta Logo
6:00 am - 11:00 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
20h 00m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:45 pm - 11:50 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
30h 05m1 stop Amsterdam Schiphol
$725Delta
Tue, Dec 1 - Tue, Dec 8
Delta Logo
6:00 am - 11:00 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
20h 00m1 stop Atlanta Hartsfield-Jackson
Delta Logo
8:05 am - 11:47 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 42m1 stop Amsterdam Schiphol
$725Delta
Tue, Nov 3 - Tue, Nov 10

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Scandinavian Airlines flights from Seattle to Brussels Bruxelles-National Airport

Our best Scandinavian Airlines deals on Seattle to Brussels Bruxelles-National Airport flight tickets
Scandinavian Airlines
Sep 15
SEA3:55 pmSeattle/Tacoma Intl
19h 35m
2 stops
BRU8:30 pmBrussels Bruxelles-National
Sep 24
BRU11:20 amBrussels Bruxelles-National
35h 25m
2 stops
SEA1:45 pmSeattle/Tacoma Intl
$669
Scandinavian Airlines
Sep 15
SEA3:55 pmSeattle/Tacoma Intl
33h 20m
3 stops
BRU10:15 amBrussels Bruxelles-National
Sep 24
BRU11:20 amBrussels Bruxelles-National
35h 25m
2 stops
SEA1:45 pmSeattle/Tacoma Intl
$704
Scandinavian Airlines
Aug 22
SEA5:51 pmSeattle/Tacoma Intl
35h 44m
2 stops
BRU2:35 pmBrussels Bruxelles-National
Aug 31
BRU9:10 pmBrussels Bruxelles-National
25h 35m
2 stops
SEA1:45 pmSeattle/Tacoma Intl
$978

Lufthansa flights from Seattle to Brussels Bruxelles-National Airport

Our best Lufthansa deals on Seattle to Brussels Bruxelles-National Airport flight tickets
Lufthansa
Nov 1
SEA2:50 pmSeattle/Tacoma Intl
13h 20m
1 stop
BRU1:10 pmBrussels Bruxelles-National
Dec 18
BRU6:45 amBrussels Bruxelles-National
15h 15m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$707
Lufthansa
Dec 2
SEA2:50 pmSeattle/Tacoma Intl
17h 20m
1 stop
BRU5:10 pmBrussels Bruxelles-National
Dec 12
BRU7:00 amBrussels Bruxelles-National
14h 00m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$714
Lufthansa
Aug 12
SEA6:50 pmSeattle/Tacoma Intl
12h 25m
1 stop
BRU4:15 pmBrussels Bruxelles-National
Sep 25
BRU9:10 amBrussels Bruxelles-National
22h 37m
2 stops
SEA10:47 pmSeattle/Tacoma Intl
$916

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Brussels Bruxelles-National Airport 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 9, 2026.
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

Sun 10/4

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Sun 10/18

1:50 pm-8:40 pm

1 stop15h 50m

$552
Quickest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sat 10/3

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Mon 10/12

1:50 pm-5:55 pm

1 stop13h 05m

$552

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-8:30 pm

2 stops19h 35m

Brussels Bruxelles-National

Thu 9/24

11:20 am-1:45 pm

2 stops35h 25m

$669

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sun 11/1

3:15 pm-8:10 pm

2 stops19h 55m

Brussels Bruxelles-National

Fri 12/18

9:10 am-1:00 pm

1 stop12h 50m

$690

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sun 11/1

2:50 pm-1:10 pm

1 stop13h 20m

Brussels Bruxelles-National

Fri 12/18

6:45 am-1:00 pm

1 stop15h 15m

$707

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

10:10 am-7:50 am

2 stops36h 40m

Brussels Bruxelles-National

Tue 11/10

10:00 am-9:27 am

2 stops32h 27m

$707

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 12/2

8:00 am-1:15 pm

2 stops20h 15m

Brussels Bruxelles-National

Wed 12/9

7:00 am-12:00 pm

1 stop14h 00m

$720

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sun 11/29

5:05 am-1:15 pm

2 stops23h 10m

Brussels Bruxelles-National

Wed 12/9

7:00 am-12:00 pm

1 stop14h 00m

$720

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

2:45 pm-11:50 am

1 stop30h 05m

$725

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/3

6:00 am-11:00 am

1 stop20h 00m

Brussels Bruxelles-National

Tue 11/10

8:05 am-11:47 am

1 stop12h 42m

$725

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 $604 to $811.
The lowest price recently found on this route was $552.

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 $702 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 17% 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

Fastest flight time

12h 15m

Direct flights

None
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
726 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
8,151 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,555 reviews
Search KLM flights
LufthansaPriceFrom $494Free CancellationRating
6.8
8,175 reviews
Search Lufthansa flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,497 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
Hasselt
Waterloo
Aalst
Namur
Knokke-Heist
Spa
Mechelen
Tournai
Francorchamps
Oostkamp
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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