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

Aer Lingus, Lufthansa, and Icelandair 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 28% 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 July 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.

$361 Cheap Flights from Brussels to Seattle in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Brussels to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

11:40 am - 4:00 pmBRU-SEA

13h 20m1 stop

5:40 pm - 6:20 pmSEA-BRU

15h 40m1 stop

$538Finnair

Find Deal

Thu, Aug 14 - Wed, Aug 20

10:40 am - 8:04 pmBRU-SEA

18h 24m2 stops

3:09 pm - 6:00 pmSEA-BRU

17h 51m2 stops

$545American Airlines

Find Deal

Mon, Aug 11 - Sun, Aug 24

8:35 pm - 4:57 pmBRU-SEA

29h 22m2 stops

1:32 pm - 6:00 pmSEA-BRU

19h 28m2 stops

$548British Airways

Find Deal

Sun, Aug 10 - Sun, Aug 24

10:50 am - 11:41 pmBRU-SEA

21h 51m2 stops

3:43 pm - 8:25 pmSEA-BRU

19h 42m2 stops

$557British Airways

Find Deal

Thu, Aug 14 - Wed, Aug 20

1:50 pm - 11:25 amBRU-SEA

30h 35m1 stop

11:30 pm - 12:50 pmSEA-BRU

28h 20m1 stop

$593Icelandair

Find Deal

Mon, Aug 11 - Sun, Aug 24

1:50 pm - 5:50 pmBRU-SEA

13h 00m1 stop

3:45 pm - 12:50 pmSEA-BRU

12h 05m1 stop

$611Icelandair

Find Deal

Tue, Aug 5 - Mon, Aug 25

8:00 am - 11:45 amBRU-SEA

12h 45m1 stop

7:45 am - 8:40 amSEA-BRU

15h 55m1 stop

$728Delta

Find Deal

Wed, Sep 10 - Wed, Sep 24

10:25 am - 4:05 pmBRU-SEA

14h 40m1 stop

7:45 am - 9:40 amSEA-BRU

16h 55m2 stops

$730Delta

Find Deal

Wed, Sep 10 - Wed, Sep 24

12:00 pm - 12:56 amBRU-SEA

21h 56m1 stop

7:20 am - 8:00 amSEA-BRU

15h 40m1 stop

$767United Airlines

Find Deal

Mon, Aug 4 - Tue, Aug 19

11:55 am - 8:10 pmBRU-SEA

17h 15m1 stop

11:50 pm - 7:40 amSEA-BRU

22h 50m2 stops

$779United Airlines

Find Deal

Mon, Dec 29 - Sat, Jan 17

Finnair flights from Brussels to Seattle

Our best Finnair deals on Brussels to Seattle flight tickets

Finnair

Aug 14

BRU11:40 amBrussels Bruxelles-National

13h 20m

1 stop

SEA4:00 pmSeattle/Tacoma Intl

Aug 20

SEA5:40 pmSeattle/Tacoma Intl

15h 40m

1 stop

BRU6:20 pmBrussels Bruxelles-National

$538

Find similar

Finnair

Aug 14

BRU11:40 amBrussels Bruxelles-National

13h 20m

1 stop

SEA4:00 pmSeattle/Tacoma Intl

Aug 20

SEA1:55 pmSeattle/Tacoma Intl

19h 25m

2 stops

BRU6:20 pmBrussels Bruxelles-National

$578

Find similar

American Airlines flights from Brussels to Seattle

Our best American Airlines deals on Brussels to Seattle flight tickets

American Airlines

Aug 11

BRU10:40 amBrussels Bruxelles-National

18h 24m

2 stops

SEA8:04 pmSeattle/Tacoma Intl

Aug 24

SEA3:09 pmSeattle/Tacoma Intl

17h 51m

2 stops

BRU6:00 pmBrussels Bruxelles-National

$545

Find similar

American Airlines

Aug 11

BRU10:40 amBrussels Bruxelles-National

31h 39m

2 stops

SEA9:19 amSeattle/Tacoma Intl

Aug 24

SEA1:32 pmSeattle/Tacoma Intl

19h 28m

2 stops

BRU6:00 pmBrussels Bruxelles-National

$546

Find similar

American Airlines

Aug 11

BRU10:40 amBrussels Bruxelles-National

18h 24m

2 stops

SEA8:04 pmSeattle/Tacoma Intl

Aug 24

SEA1:30 pmSeattle/Tacoma Intl

19h 30m

1 stop

BRU6:00 pmBrussels Bruxelles-National

$598

Find similar

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, January 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 $662. If you don’t want to visit Seattle in January, then you should wait until March to fly from Brussels, when ticket prices are also cheap, with an average price of $666.

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 $732 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 $653 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

Best Price Found	$361
Fastest flight time	12h 25m
Direct flights	None
Airports in Seattle	1 airport

The best one-way flight to Seattle from Brussels in the past 72 hours is $361. The best round-trip flight deal from Brussels to Seattle found on momondo in the last 72 hours is $538.

The fastest flight from Brussels to Seattle takes 12h 25m

There are no direct flights from Brussels to Seattle. Popular non-direct routes for this connection are Brussels Bruxelles-National Airport - Seattle/Tacoma Intl Airport and Charleroi Brussels Airport - Seattle/Tacoma Intl Airport.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

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 45m.
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 July 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 7.1 1,152 reviews	Search Aer Lingus flights
Icelandair	PriceFrom $601	Free Cancellation	Rating 7.0 514 reviews	Search Icelandair flights
United Airlines	PriceFrom $604	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
KLM	PriceFrom $605	Free Cancellation	Rating 7.8 1,372 reviews	Search KLM flights
British Airways	PriceFrom $611	Free Cancellation	Rating 6.6 7,109 reviews	Search British Airways flights
Delta	PriceFrom $616	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights
Finnair	PriceFrom $651	Free Cancellation	Rating 7.6 1,312 reviews	Search Finnair flights
Lufthansa	PriceFrom $670	Free Cancellation	Rating 6.8 7,199 reviews	Search Lufthansa flights

Leavenworth

Tacoma

SeaTac

Ocean Shores

Olympia

Renton

Federal Way

Kent

Lynnwood

Puyallup

Marysville

Tukwila

Kirkland

Lakewood

Fife

Shoreline

Centralia

Cle Elum

Westport

Redmond

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.