What is the cheapest airline that flies from Brussels to Seattle/Tacoma Intl?

Icelandair, British Airways, and Aer Lingus are the most popular carriers operating from Brussels to Seattle/Tacoma Intl

What airlines fly to Seattle?

British Airways, Icelandair and Delta are the top three most popular airlines that fly to Seattle from Brussels according to our data. British Airways is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 8 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Brussels to Seattle/Tacoma Intl Airport?

Prices for flights from Brussels to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Brussels to Seattle/Tacoma Intl Airport?

As of August 2025, there are 8 operators available to choose from for flights from Brussels to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Brussels to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Brussels to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$396 Cheap Flights from Brussels to Seattle in 2025

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Find the cheapest flights from Brussels to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

1:50 pm - 11:25 amBRU-SEA

30h 35m1 stop

7:00 pm - 12:50 pmSEA-BRU

32h 50m1 stop

$503Icelandair

Find Deal

Sat, Sep 6 - Mon, Sep 22

1:50 pm - 5:50 pmBRU-SEA

13h 00m1 stop

3:45 pm - 12:50 pmSEA-BRU

12h 05m1 stop

$506Icelandair

Find Deal

Fri, Oct 10 - Fri, Oct 17

1:50 pm - 5:50 pmBRU-SEA

13h 00m1 stop

3:45 pm - 12:50 pmSEA-BRU

12h 05m1 stop

$507Icelandair

Find Deal

Sun, Oct 5 - Sun, Oct 19

1:50 pm - 8:40 pmBRU-SEA

15h 50m1 stop

3:45 pm - 12:50 pmSEA-BRU

12h 05m1 stop

$510Icelandair

Find Deal

Mon, Oct 6 - Fri, Oct 10

3:05 pm - 11:35 amBRU-SEA

29h 30m1 stop

2:35 pm - 1:40 pmSEA-BRU

15h 05m1 stop

$521British Airways

Find Deal

Sun, Oct 19 - Sat, Nov 1

10:20 am - 5:50 pmBRU-SEA

16h 30m1 stop

7:35 pm - 3:30 pmSEA-BRU

11h 55m1 stop

$530Aer Lingus

Find Deal

Wed, Oct 15 - Sat, Oct 25

10:20 am - 2:00 pmBRU-SEA

12h 40m1 stop

4:20 pm - 11:15 amSEA-BRU

33h 55m2 stops

$535Scandinavian Airlines

Find Deal

Fri, Oct 10 - Fri, Oct 17

10:55 am - 10:16 pmBRU-SEA

20h 21m2 stops

7:50 pm - 8:50 pmSEA-BRU

17h 00m1 stop

$538British Airways

Find Deal

Wed, Oct 15 - Sat, Oct 25

6:35 am - 7:29 pmBRU-SEA

21h 54m2 stops

10:32 am - 6:25 pmSEA-BRU

23h 53m2 stops

$566Finnair

Find Deal

Thu, Oct 16 - Wed, Oct 29

6:35 am - 7:27 pmBRU-SEA

21h 52m2 stops

1:30 pm - 6:20 pmSEA-BRU

19h 50m2 stops

$581Finnair

Find Deal

Wed, Oct 8 - Wed, Oct 15

Finnair flights from Brussels to Seattle

Our best Finnair deals on Brussels to Seattle flight tickets

Finnair

Oct 16

BRU6:35 amBrussels Bruxelles-National

21h 54m

2 stops

SEA7:29 pmSeattle/Tacoma Intl

Oct 29

SEA10:32 amSeattle/Tacoma Intl

23h 53m

2 stops

BRU6:25 pmBrussels Bruxelles-National

$566

Find similar

Finnair

Oct 8

BRU6:35 amBrussels Bruxelles-National

21h 52m

2 stops

SEA7:27 pmSeattle/Tacoma Intl

Oct 15

SEA1:30 pmSeattle/Tacoma Intl

19h 50m

2 stops

BRU6:20 pmBrussels Bruxelles-National

$581

Find similar

Finnair

Oct 5

BRU11:40 amBrussels Bruxelles-National

19h 18m

2 stops

SEA9:58 pmSeattle/Tacoma Intl

Oct 19

SEA1:30 pmSeattle/Tacoma Intl

19h 50m

2 stops

BRU6:20 pmBrussels Bruxelles-National

$645

Find similar

Icelandair flights from Brussels to Seattle

Our best Icelandair deals on Brussels to Seattle flight tickets

Icelandair

Sep 6

BRU1:50 pmBrussels Bruxelles-National

30h 35m

1 stop

SEA11:25 amSeattle/Tacoma Intl

Sep 22

SEA7:00 pmSeattle/Tacoma Intl

32h 50m

1 stop

BRU12:50 pmBrussels Bruxelles-National

$503

Find similar

Icelandair

Oct 10

BRU1:50 pmBrussels Bruxelles-National

13h 00m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

Oct 17

SEA3:45 pmSeattle/Tacoma Intl

12h 05m

1 stop

BRU12:50 pmBrussels Bruxelles-National

$506

Find similar

Icelandair

Oct 5

BRU1:50 pmBrussels Bruxelles-National

13h 00m

1 stop

SEA5:50 pmSeattle/Tacoma Intl

Oct 19

SEA3:45 pmSeattle/Tacoma Intl

12h 05m

1 stop

BRU12:50 pmBrussels Bruxelles-National

$507

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/6

1:50 pm-11:25 am

1 stop30h 35m

Seattle/Tacoma Intl

Mon 9/22

7:00 pm-12:50 pm

1 stop32h 50m

$503

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 10/10

1:50 pm-5:50 pm

1 stop13h 00m

Seattle/Tacoma Intl

Fri 10/17

3:45 pm-12:50 pm

1 stop12h 05m

$506

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sun 10/5

1:50 pm-5:50 pm

1 stop13h 00m

Seattle/Tacoma Intl

Sun 10/19

3:45 pm-12:50 pm

1 stop12h 05m

$507

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 10/6

1:50 pm-8:40 pm

1 stop15h 50m

Seattle/Tacoma Intl

Fri 10/10

3:45 pm-12:50 pm

1 stop12h 05m

$510

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sun 10/19

3:05 pm-11:35 am

1 stop29h 30m

Seattle/Tacoma Intl

Sat 11/1

2:35 pm-1:40 pm

1 stop15h 05m

$521

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 10/15

10:20 am-5:50 pm

1 stop16h 30m

Seattle/Tacoma Intl

Sat 10/25

7:35 pm-3:30 pm

1 stop11h 55m

$530

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 10/10

10:20 am-2:00 pm

1 stop12h 40m

Seattle/Tacoma Intl

Fri 10/17

4:20 pm-11:15 am

2 stops33h 55m

$535

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 10/15

10:55 am-10:16 pm

2 stops20h 21m

Seattle/Tacoma Intl

Sat 10/25

7:50 pm-8:50 pm

1 stop17h 00m

$538

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 10/16

6:35 am-7:29 pm

2 stops21h 54m

Seattle/Tacoma Intl

Wed 10/29

10:32 am-6:25 pm

2 stops23h 53m

$566

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 10/8

6:35 am-7:27 pm

2 stops21h 52m

Seattle/Tacoma Intl

Wed 10/15

1:30 pm-6:20 pm

2 stops19h 50m

$581

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Brussels to Seattle

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

Prices

Airlines

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Brussels to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $592. If you don’t want to visit Seattle in December, then you should wait until January to fly from Brussels, when ticket prices are also cheap, with an average price of $640.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Brussels is on a Sunday. momondo users have found tickets for Sunday departures for as low as $696. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Brussels because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $979.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Brussels in the morning is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing in the morning. Flights to Seattle are more costly at noon, with an average ticket price of $956. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Brussels when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $711 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Brussels for as low as $645 on momondo.

Cheap Brussels to Seattle flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Brussels to Seattle

Direct flights	None

There are no direct flights from Brussels to Seattle. There are no popular flight routes from Brussels to Seattle.

Search flight deals

How far is Brussels to Seattle/Tacoma Intl by plane?
Brussels and Seattle/Tacoma Intl are 4931.7 mi apart from one another. In terms of flight time, this usually takes a little over 12h 30m.
When did momondo last update prices for flights from Brussels to Seattle/Tacoma Intl Airport?
Prices for flights from Brussels to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Brussels to Seattle/Tacoma Intl Airport?
As of August 2025, there are 8 operators available to choose from for flights from Brussels to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Brussels to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Brussels to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Brussels to Seattle

Compare and see reviews for airlines that fly from Brussels to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom $524	Free Cancellation	Rating 7.2 1,237 reviews	Search Aer Lingus flights
Lufthansa	PriceFrom $570	Free Cancellation	Rating 6.8 7,359 reviews	Search Lufthansa flights
Icelandair	PriceFrom $586	Free Cancellation	Rating 7.0 533 reviews	Search Icelandair flights
British Airways	PriceFrom $592	Free Cancellation	Rating 6.7 7,309 reviews	Search British Airways flights
United Airlines	PriceFrom $604	Free Cancellation	Rating 7.4 8,943 reviews	Search United Airlines flights
KLM	PriceFrom $605	Free Cancellation	Rating 7.8 1,387 reviews	Search KLM flights
Delta	PriceFrom $616	Free Cancellation	Rating 7.9 7,979 reviews	Search Delta flights
Finnair	PriceFrom $651	Free Cancellation	Rating 7.6 1,320 reviews	Search Finnair flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Olympia

Renton

Lynnwood

Kent

Marysville

Puyallup

Federal Way

Cle Elum

Tukwila

Kirkland

Centralia

Lakewood

Shoreline

Fife

Redmond

Westport

Why use momondo?

Why should I use momondo to find a flight deal from Brussels to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from Brussels.

Can I find flights from Brussels to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from Brussels on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Brussels to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Brussels. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Brussels to Seattle right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Brussels to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.