Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Brussels Bruxelles-National Airport to Seattle from $391

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Brussels Bruxelles-National Airport to Seattle departing on 4/13. 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
0 bags

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from Brussels Bruxelles-National Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:50 pm - 6:00 pm
BRU
-
SEA
13h 10m
1 stop
Icelandair Logo
7:00 pm - 11:55 am
SEA
-
BRU
32h 55m
1 stop
$547Icelandair
Thu, Mar 12 - Fri, Mar 27
Multiple Airlines Logo
9:25 pm - 10:18 pm
BRU
-
SEA
33h 53m
2 stops
Multiple Airlines Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$565Multiple Airlines
Mon, May 4 - Tue, May 19
Multiple Airlines Logo
7:55 pm - 11:35 am
BRU
-
SEA
24h 40m
1 stop
Multiple Airlines Logo
8:20 pm - 8:25 pm
SEA
-
BRU
15h 05m
1 stop
$578Multiple Airlines
Tue, Jun 16 - Tue, Jul 7
Multiple Airlines Logo
9:15 pm - 11:35 am
BRU
-
SEA
23h 20m
1 stop
Multiple Airlines Logo
8:20 pm - 9:10 pm
SEA
-
BRU
15h 50m
1 stop
$600Multiple Airlines
Thu, Jun 25 - Fri, Jul 10
Multiple Airlines Logo
9:15 pm - 11:35 am
BRU
-
SEA
23h 20m
1 stop
Multiple Airlines Logo
1:35 pm - 9:10 pm
SEA
-
BRU
22h 35m
1 stop
$602Multiple Airlines
Thu, Jun 25 - Fri, Jul 10
Multiple Airlines Logo
7:55 pm - 11:35 am
BRU
-
SEA
24h 40m
1 stop
Multiple Airlines Logo
1:35 pm - 4:10 pm
SEA
-
BRU
17h 35m
1 stop
$605Multiple Airlines
Tue, Jun 2 - Thu, Jun 18
Multiple Airlines Logo
10:55 am - 6:25 pm
BRU
-
SEA
16h 30m
1 stop
Multiple Airlines Logo
1:35 pm - 8:40 pm
SEA
-
BRU
22h 05m
1 stop
$606Multiple Airlines
Tue, Jun 2 - Thu, Jun 18
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m
1 stop
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m
1 stop
$614Icelandair
Thu, Feb 5 - Wed, Feb 18
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
$625Icelandair
Thu, Apr 30 - Fri, May 8
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
Icelandair Logo
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
$628Icelandair
Thu, Apr 30 - Fri, May 8

Finnair flights from Brussels Bruxelles-National Airport to Seattle

Our best Finnair deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Finnair
May 14
BRU6:30 amBrussels Bruxelles-National
24h 56m
2 stops
SEA10:26 pmSeattle/Tacoma Intl
May 26
SEA8:20 pmSeattle/Tacoma Intl
28h 00m
2 stops
BRU9:20 amBrussels Bruxelles-National
$679
Finnair
Jun 2
BRU11:20 amBrussels Bruxelles-National
33h 15m
2 stops
SEA11:35 amSeattle/Tacoma Intl
Jun 18
SEA1:35 pmSeattle/Tacoma Intl
34h 45m
2 stops
BRU9:20 amBrussels Bruxelles-National
$685
Finnair
May 5
BRU11:20 amBrussels Bruxelles-National
20h 06m
2 stops
SEA10:26 pmSeattle/Tacoma Intl
Jun 16
SEA8:20 pmSeattle/Tacoma Intl
28h 00m
2 stops
BRU9:20 amBrussels Bruxelles-National
$707

Delta flights from Brussels Bruxelles-National Airport to Seattle

Our best Delta deals on Brussels Bruxelles-National Airport to Seattle flight tickets
Delta
May 6
BRU6:20 amBrussels Bruxelles-National
14h 22m
1 stop
SEA11:42 amSeattle/Tacoma Intl
May 28
SEA9:30 amSeattle/Tacoma Intl
20h 10m
2 stops
BRU2:40 pmBrussels Bruxelles-National
$648
Delta
Apr 3
BRU10:25 amBrussels Bruxelles-National
15h 05m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
Apr 17
SEA9:00 amSeattle/Tacoma Intl
20h 40m
2 stops
BRU2:40 pmBrussels Bruxelles-National
$691
Delta
Mar 3
BRU8:05 amBrussels Bruxelles-National
12h 30m
1 stop
SEA11:35 amSeattle/Tacoma Intl
May 2
SEA11:00 pmSeattle/Tacoma Intl
23h 40m
1 stop
BRU7:40 amBrussels Bruxelles-National
$692

momondo Fare Finder

 
Customize your flight search to find flights from Brussels Bruxelles-National Airport to Seattle 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 January 21, 2026.
Use the filters below to find and compare flights from Brussels Bruxelles-National Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 3/12

12:50 pm-6:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

Fri 3/27

7:00 pm-11:55 am

1 stop32h 55m

$547

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 5/4

9:25 pm-10:18 pm

2 stops33h 53m

Seattle/Tacoma Intl

Tue 5/19

3:40 pm-12:55 pm

1 stop12h 15m

$565

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 6/16

7:55 pm-11:35 am

1 stop24h 40m

Seattle/Tacoma Intl

Tue 7/7

8:20 pm-8:25 pm

1 stop15h 05m

$578

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 6/25

9:15 pm-11:35 am

1 stop23h 20m

Seattle/Tacoma Intl

Fri 7/10

8:20 pm-9:10 pm

1 stop15h 50m

$600

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 6/25

9:15 pm-11:35 am

1 stop23h 20m

Seattle/Tacoma Intl

Fri 7/10

1:35 pm-9:10 pm

1 stop22h 35m

$602

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 6/2

7:55 pm-11:35 am

1 stop24h 40m

Seattle/Tacoma Intl

Thu 6/18

1:35 pm-4:10 pm

1 stop17h 35m

$605

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 6/2

10:55 am-6:25 pm

1 stop16h 30m

Seattle/Tacoma Intl

Thu 6/18

1:35 pm-8:40 pm

1 stop22h 05m

$606

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 2/5

12:50 pm-5:00 pm

1 stop13h 10m

Seattle/Tacoma Intl

Wed 2/18

2:35 pm-11:55 am

1 stop12h 20m

$614

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/30

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/8

3:40 pm-12:55 pm

1 stop12h 15m

$625

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 4/30

1:50 pm-5:55 pm

1 stop13h 05m

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-12:55 pm

1 stop32h 55m

$628

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Seattle from

How to get the cheapest flight ticket from Brussels Bruxelles-National Airport 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

What is the cheapest month to fly to Seattle?

In general, December is the cheapest month to fly from Brussels Bruxelles-National Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $597. If you don’t want to visit Seattle in December, then you should wait until March to fly from Brussels Bruxelles-National Airport, when ticket prices are also cheap, with an average price of $667.

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

You are more likely to see cheaper flights to Seattle from Brussels Bruxelles-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $722 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Brussels Bruxelles-National Airport for as low as $669 on momondo.

How have Brussels Bruxelles-National Airport to Seattle flight prices changed over time?

As of January 2026, prices for Brussels Bruxelles-National Airport to Seattle flights are approximately 43% more expensive when compared to flights at the same time last year.

When to book flights from Brussels Bruxelles-National Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Brussels Bruxelles-National Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Brussels Bruxelles-National Airport to Seattle (BRU to SEA) flight deals and tips

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

Fastest flight time

13h 10m

Direct flights

None
The fastest flight from Brussels Bruxelles-National Airport to Seattle takes 13h 10m
There are no direct flights from Brussels Bruxelles-National Airport to Seattle. There are no popular flight routes from Brussels Bruxelles-National Airport to Seattle.
Search flight deals

  • How far is Brussels Bruxelles-National to Seattle/Tacoma Intl by plane?

    There are 4932.2 mi between Brussels Bruxelles-National and Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 13h 10m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Brussels Bruxelles-National Airport to Seattle/Tacoma Intl Airport.

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

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Brussels Bruxelles-National Airport to Seattle?

Best airlines flying from Brussels Bruxelles-National Airport to Seattle

Compare and see reviews for airlines that fly from Brussels Bruxelles-National Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $584Free CancellationRating
7.4
9,191 reviews
Search United Airlines flights
IcelandairPriceFrom $586Free CancellationRating
7.1
602 reviews
Search Icelandair flights
British AirwaysPriceFrom $592Free CancellationRating
6.7
7,689 reviews
Search British Airways flights
KLMPriceFrom $605Free CancellationRating
7.7
1,442 reviews
Search KLM flights
DeltaPriceFrom $616Free CancellationRating
7.9
8,088 reviews
Search Delta flights
LufthansaPriceFrom $687Free CancellationRating
6.8
7,738 reviews
Search Lufthansa flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Centralia
Westport
Kirkland
Fife
Shoreline

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. momondo allows you to filter the results for Brussels to Seattle flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Brussels.

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

Yes momondo offers price alerts on flights to Seattle from Brussels. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Seattle 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
Fri 2/20
Fri 2/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States