Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Brussels from $231

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
$510Icelandair
Wed, Dec 2 - Tue, Dec 8
Icelandair Logo
3:40 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 15m1 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
$516Icelandair
Wed, Oct 14 - Tue, Nov 3
Scandinavian Airlines Logo
3:55 pm - 7:50 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
18h 55m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
10:20 am - 1:45 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
12h 25m1 stop Kastrup Copenhagen
$711Scandinavian Airlines
Fri, Oct 2 - Sun, Oct 11
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
10:00 am - 9:27 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
32h 27m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$713Multiple Airlines
Tue, Nov 17 - Tue, Dec 8
United Airlines Logo
12:46 pm - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
15h 29m2 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
$721United Airlines
Wed, Dec 2 - Wed, Dec 9
United Airlines Logo
9:02 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
19h 13m2 stops San Francisco London Heathrow
United Airlines Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$721United Airlines
Tue, Dec 1 - Wed, Dec 9
British Airways Logo
1:30 pm - 11:10 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 40m1 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 17 - 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
6:15 am - 11:50 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 35m1 stop Amsterdam Schiphol
$726Delta
Tue, Nov 17 - Tue, Dec 8
British Airways Logo
6:45 pm - 7:45 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 00m1 stop London Heathrow
British Airways Logo
5:35 pm - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
32h 15m1 stop London Heathrow
$731British Airways
Tue, Dec 1 - Mon, Dec 7
Delta Logo
6:00 am - 7:40 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 40m1 stop Atlanta Hartsfield-Jackson
Delta Logo
2:45 pm - 11:47 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
30h 02m1 stop Amsterdam Schiphol
$756Delta
Tue, Oct 13 - Mon, Nov 2

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Oct 2
SEA3:55 pmSeattle/Tacoma Intl
18h 55m
1 stop
BRU7:50 pmBrussels Bruxelles-National
Oct 11
BRU10:20 amBrussels Bruxelles-National
12h 25m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$711
Scandinavian Airlines
Sep 13
SEA3:55 pmSeattle/Tacoma Intl
17h 35m
1 stop
BRU6:30 pmBrussels Bruxelles-National
Oct 10
BRU10:20 amBrussels Bruxelles-National
12h 25m
1 stop
SEA1:45 pmSeattle/Tacoma Intl
$948

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 17
SEA1:30 pmSeattle/Tacoma Intl
12h 40m
1 stop
BRU11:10 amBrussels Bruxelles-National
Dec 8
BRU12:05 pmBrussels Bruxelles-National
13h 45m
1 stop
SEA4:50 pmSeattle/Tacoma Intl
$721
British Airways
Dec 1
SEA6:45 pmSeattle/Tacoma Intl
16h 00m
1 stop
BRU7:45 pmBrussels Bruxelles-National
Dec 7
BRU5:35 pmBrussels Bruxelles-National
32h 15m
1 stop
SEA4:50 pmSeattle/Tacoma Intl
$731

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

Wed 12/2

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Tue 12/8

12:50 pm-5:00 pm

1 stop13h 10m

$510
Quickest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 10/14

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Tue 11/3

12:50 pm-5:00 pm

1 stop13h 10m

$516

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Fri 10/2

3:55 pm-7:50 pm

1 stop18h 55m

Brussels Bruxelles-National

Sun 10/11

10:20 am-1:45 pm

1 stop12h 25m

$711

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/17

3:15 pm-8:10 pm

2 stops19h 55m

Brussels Bruxelles-National

Tue 12/8

10:00 am-9:27 am

2 stops32h 27m

$713

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 12/2

12:46 pm-1:15 pm

2 stops15h 29m

Brussels Bruxelles-National

Wed 12/9

7:00 am-12:00 pm

1 stop14h 00m

$721

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 12/1

9:02 am-1:15 pm

2 stops19h 13m

Brussels Bruxelles-National

Wed 12/9

7:00 am-12:00 pm

1 stop14h 00m

$721

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/17

1:30 pm-11:10 am

1 stop12h 40m

Brussels Bruxelles-National

Tue 12/8

12:05 pm-4:50 pm

1 stop13h 45m

$721

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 11/17

6:00 am-11:00 am

1 stop20h 00m

Brussels Bruxelles-National

Tue 12/8

6:15 am-11:50 am

1 stop14h 35m

$726

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 12/1

6:45 pm-7:45 pm

1 stop16h 00m

Brussels Bruxelles-National

Mon 12/7

5:35 pm-4:50 pm

1 stop32h 15m

$731

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Tue 10/13

6:00 am-7:40 am

1 stop16h 40m

Brussels Bruxelles-National

Mon 11/2

2:45 pm-11:47 am

1 stop30h 02m

$756

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $639 to $847.
The lowest price recently found on this route was $510.

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 $725 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 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

$231

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 $231. The best round-trip flight deal from Seattle to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $510.
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
738 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
8,196 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,570 reviews
Search KLM flights
LufthansaPriceFrom $494Free CancellationRating
6.8
8,232 reviews
Search Lufthansa flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
10,157 reviews
Search United Airlines flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,543 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
Zaventem
Durbuy
Mons
Charleroi
Genk
Aalst
Waterloo
Mechelen
Namur
Spa
Hasselt
Knokke-Heist
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.

An easier way to manage your Brussels Bruxelles-National Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 10/1
Thu 10/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brussels

Popular cities in Belgium

Flights to Charleroi Brussels Airportfrom $600