Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Brussels from $201

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 11/17. 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.
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
$482Multiple Airlines
Mon, Feb 8 - Tue, Feb 16
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
$483Multiple Airlines
Mon, Feb 8 - Tue, Feb 16
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 - 8:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
$554Icelandair
Sat, Oct 3 - Fri, Oct 16
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
$556Icelandair
Mon, Feb 8 - Tue, Feb 16
Lufthansa Logo
2:50 pm - 4:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$708Lufthansa
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
6:45 pm - 4:40 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 55m1 stop London Heathrow
British Airways Logo
5:55 pm - 11:25 amBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
26h 30m1 stop London Heathrow
$708British Airways
Mon, Nov 2 - Wed, Dec 9
Lufthansa Logo
2:50 pm - 4:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$709Lufthansa
Wed, Nov 4 - Wed, Nov 18
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
United Airlines Logo
12:45 pm - 8:50 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
35h 05m2 stops Denver Intl London Heathrow
United Airlines Logo
10:10 am - 11:17 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
22h 07m1 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

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

Icelandair flights from Seattle to Brussels Bruxelles-National Airport

Our best Icelandair deals on Seattle to Brussels Bruxelles-National Airport flight tickets
Icelandair
Oct 3
SEA7:00 pmSeattle/Tacoma Intl
32h 55m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Oct 16
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$554
Icelandair
Feb 8
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Feb 16
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$556
Icelandair
Dec 5
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Dec 13
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$557

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
Aug 22
SEA11:04 pmSeattle/Tacoma Intl
23h 11m
1 stop
BRU7:15 amBrussels Bruxelles-National
Aug 31
BRU10:15 amBrussels Bruxelles-National
20h 00m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$948
United Airlines
Aug 22
SEA12:44 pmSeattle/Tacoma Intl
15h 31m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Aug 31
BRU12:00 pmBrussels Bruxelles-National
18h 15m
2 stops
SEA9:15 pmSeattle/Tacoma Intl
$994

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 15, 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

Mon 2/8

8:21 am-9:35 am

2 stops16h 14m

Brussels Bruxelles-National

Tue 2/16

10:15 am-7:43 pm

2 stops18h 28m

$482

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 2/8

8:21 am-9:35 am

2 stops16h 14m

Brussels Bruxelles-National

Tue 2/16

10:15 am-7:43 pm

2 stops18h 28m

$483

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Sat 10/3

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 10/16

1:50 pm-8:40 pm

1 stop15h 50m

$554
Quickest round-trip

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 2/8

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Tue 2/16

12:50 pm-5:00 pm

1 stop13h 10m

$556

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:50 pm-4:15 pm

1 stop16h 25m

Brussels Bruxelles-National

Wed 11/18

7:00 am-12:00 pm

1 stop14h 00m

$708

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Mon 11/2

6:45 pm-4:40 pm

1 stop12h 55m

Brussels Bruxelles-National

Wed 12/9

5:55 pm-11:25 am

1 stop26h 30m

$708

SeattleBrussels

SEA Seattle/Tacoma Intl - BRU Brussels Bruxelles-National

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:50 pm-4:15 pm

1 stop16h 25m

Brussels Bruxelles-National

Wed 11/18

7:00 am-12:00 pm

1 stop14h 00m

$709

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

12:45 pm-8:50 am

2 stops35h 05m

Brussels Bruxelles-National

Tue 11/10

10:10 am-11:17 pm

1 stop22h 07m

$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

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 $604 to $811.
The lowest price recently found on this route was $482.

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 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

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
731 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
8,166 reviews
Search British Airways flights
KLMPriceFrom $481Free CancellationRating
7.8
1,559 reviews
Search KLM flights
LufthansaPriceFrom $494Free CancellationRating
6.8
8,195 reviews
Search Lufthansa flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
10,105 reviews
Search United Airlines flights
DeltaPriceFrom $509Free CancellationRating
7.8
8,504 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
Knokke-Heist
Spa
Hasselt
Mechelen
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
Mon 9/14
Mon 9/21
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

Popular flights according to clicks in the last 7 days on momondo
Flights to Charleroi Brussels Airportfrom $610