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Cheap flights from Seattle to Brussels from $248

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
$546Icelandair
Mon, Nov 2 - Thu, Nov 12
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
$547Icelandair
Wed, Dec 2 - Sun, Dec 6
Multiple Airlines Logo
2:35 pm - 10:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
35h 15m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Oslo Gardermoen
Multiple Airlines Logo
7:25 pm - 5:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
30h 35m3 stops Riga Intl Stockholm Arlanda Reykjavik Keflavik Intl
$681Multiple Airlines
Mon, Nov 23 - Sun, Dec 6
Multiple Airlines Logo
7:45 am - 6:40 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
25h 55m3 stops Toronto Pearson Intl Munich Franz Josef Strauss Stockholm Arlanda
Multiple Airlines Logo
7:45 pm - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
25h 15m2 stops Stockholm Arlanda Frankfurt am Main
$683Multiple Airlines
Mon, Nov 23 - Sun, Dec 6
Lufthansa Logo
2:50 pm - 4:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:40 pm - 1:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
26h 20m1 stop Munich Franz Josef Strauss
$715Lufthansa
Sun, Nov 1 - Tue, Nov 10
United Airlines Logo
10:56 pm - 8:05 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
24h 09m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
11:15 am - 11:07 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
20h 52m2 stops Newark Chicago O'Hare Intl
$731United Airlines
Sun, Nov 1 - Tue, Nov 10
British Airways Logo
6:45 pm - 4:20 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 35m1 stop London Heathrow
British Airways Logo
9:15 pm - 11:25 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
23h 10m1 stop London Heathrow
$744British Airways
Wed, Feb 3 - Mon, Feb 8
United Airlines Logo
8:30 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
19h 45m3 stops Denver Intl Newark London Heathrow
United Airlines Logo
12:45 pm - 9:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
41h 55m2 stops Munich Franz Josef Strauss Newark
$764United Airlines
Wed, Feb 3 - Mon, Feb 8
Lufthansa Logo
2:50 pm - 8:20 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
21h 30m1 stop Frankfurt am Main
Lufthansa Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$768Lufthansa
Wed, Oct 28 - Wed, Nov 4
British Airways Logo
1:40 pm - 4:35 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 55m1 stop London Heathrow
British Airways Logo
9:15 pm - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
28h 35m1 stop London Heathrow
$800British Airways
Sat, Feb 20 - Mon, Mar 1

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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 13
SEA7:00 pmSeattle/Tacoma Intl
32h 55m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Nov 12
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$542
Icelandair
Nov 2
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Nov 12
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$546
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
$547

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
16h 25m
1 stop
BRU4:15 pmBrussels Bruxelles-National
Nov 10
BRU7:40 pmBrussels Bruxelles-National
26h 20m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$715
Lufthansa
Dec 2
SEA2:50 pmSeattle/Tacoma Intl
13h 20m
1 stop
BRU1:10 pmBrussels Bruxelles-National
Dec 9
BRU7:00 amBrussels Bruxelles-National
14h 00m
1 stop
SEA12:00 pmSeattle/Tacoma Intl
$717

momondo Fare Finder

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

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Route

Depart

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Price

Cheapest round-trip
Quickest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/2

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 11/12

12:50 pm-5:00 pm

1 stop13h 10m

$546

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

$547

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-10:50 am

3 stops35h 15m

Brussels Bruxelles-National

Sun 12/6

7:25 pm-5:00 pm

3 stops30h 35m

$681

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/23

7:45 am-6:40 pm

3 stops25h 55m

Brussels Bruxelles-National

Sun 12/6

7:45 pm-12:00 pm

2 stops25h 15m

$683

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sun 11/1

2:50 pm-4:15 pm

1 stop16h 25m

Brussels Bruxelles-National

Tue 11/10

7:40 pm-1:00 pm

1 stop26h 20m

$715

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sun 11/1

10:56 pm-8:05 am

2 stops24h 09m

Brussels Bruxelles-National

Tue 11/10

11:15 am-11:07 pm

2 stops20h 52m

$731

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 2/3

6:45 pm-4:20 pm

1 stop12h 35m

Brussels Bruxelles-National

Mon 2/8

9:15 pm-11:25 am

1 stop23h 10m

$744

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 2/3

8:30 am-1:15 pm

3 stops19h 45m

Brussels Bruxelles-National

Mon 2/8

12:45 pm-9:40 pm

2 stops41h 55m

$764

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 10/28

2:50 pm-8:20 pm

1 stop21h 30m

Brussels Bruxelles-National

Wed 11/4

7:00 am-12:00 pm

1 stop14h 00m

$768

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sat 2/20

1:40 pm-4:35 pm

1 stop17h 55m

Brussels Bruxelles-National

Mon 3/1

9:15 pm-4:50 pm

1 stop28h 35m

$800

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 $556 to $789.
The lowest price recently found on this route was $542.

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 $760 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 34% 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 October 2026, prices for Seattle to Brussels Bruxelles-National Airport flights are approximately 35% 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

$248

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 $248. The best round-trip flight deal from Seattle to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $546.
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
756 reviews
Search Icelandair flights
British AirwaysPriceFrom $406Free CancellationRating
6.7
8,245 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,576 reviews
Search KLM flights
LufthansaPriceFrom $496Free CancellationRating
6.8
8,255 reviews
Search Lufthansa flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,627 reviews
Search Delta flights
United AirlinesPriceFrom $522Free CancellationRating
7.4
10,286 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
Namur
Genk
Aalst
Mechelen
Waterloo
Hasselt
Francorchamps
Knokke-Heist
Rochefort
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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