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Cheap flights from Washington to Brussels from $309

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Brussels departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Icelandair Logo
11:30 pm - 12:50 pmSEA-BRU
28h 20m1 stop
Icelandair Logo
1:50 pm - 11:25 amBRU-SEA
30h 35m1 stop
$433Icelandair
Find Deal
Fri, Aug 22 - Mon, Sep 1
Icelandair Logo
3:45 pm - 12:50 pmSEA-BRU
12h 05m1 stop
Icelandair Logo
1:50 pm - 8:40 pmBRU-SEA
15h 50m1 stop
$446Icelandair
Find Deal
Wed, Sep 24 - Sat, Oct 11
Aer Lingus Logo
8:05 pm - 6:15 pmSEA-BRU
13h 10m1 stop
Aer Lingus Logo
10:15 am - 6:20 pmBRU-SEA
17h 05m1 stop
$448Aer Lingus
Find Deal
Mon, Nov 24 - Wed, Dec 3
Icelandair Logo
3:45 pm - 12:50 pmSEA-BRU
12h 05m1 stop
Icelandair Logo
1:50 pm - 8:40 pmBRU-SEA
15h 50m1 stop
$463Icelandair
Find Deal
Wed, Sep 24 - Sat, Oct 11
British Airways Logo
6:50 pm - 4:20 pmSEA-BRU
12h 30m1 stop
British Airways Logo
12:00 pm - 4:55 pmBRU-SEA
13h 55m1 stop
$468British Airways
Find Deal
Wed, Nov 12 - Tue, Nov 18
Icelandair Logo
3:45 pm - 12:50 pmSEA-BRU
12h 05m1 stop
Icelandair Logo
1:50 pm - 8:40 pmBRU-SEA
15h 50m1 stop
$469Icelandair
Find Deal
Mon, Sep 1 - Tue, Sep 16
Finnair Logo
7:23 am - 6:25 pmSEA-BRU
26h 02m2 stops
Finnair Logo
7:05 am - 10:24 pmBRU-SEA
24h 19m2 stops
$472Finnair
Find Deal
Wed, Nov 12 - Tue, Nov 18
KLM Logo
7:20 am - 9:00 amSEA-BRU
16h 40m1 stop
KLM Logo
11:00 am - 7:29 pmBRU-SEA
17h 29m1 stop
$483KLM
Find Deal
Wed, Nov 12 - Tue, Nov 18
British Airways Logo
5:45 pm - 11:10 amPDX-BRU
32h 25m1 stop
British Airways Logo
11:50 am - 3:55 pmBRU-PDX
13h 05m1 stop
$698British Airways
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Sun, Dec 14 - Wed, Dec 24
KLM Logo
7:24 am - 8:40 amPDX-BRU
16h 16m1 stop
KLM Logo
10:45 am - 9:31 pmBRU-PDX
19h 46m1 stop
$785KLM
Find Deal
Wed, Aug 20 - Tue, Sep 2

Icelandair flights from State of Washington to Brussels

Our best Icelandair deals on State of Washington to Brussels flight tickets
Icelandair
Aug 22
SEA11:30 pmSeattle/Tacoma Intl
28h 20m
1 stop
BRU12:50 pmBrussels Bruxelles-National
Sep 1
BRU1:50 pmBrussels Bruxelles-National
30h 35m
1 stop
SEA11:25 amSeattle/Tacoma Intl
$433
Find similar
Icelandair
Sep 24
SEA3:45 pmSeattle/Tacoma Intl
12h 05m
1 stop
BRU12:50 pmBrussels Bruxelles-National
Oct 11
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$446
Find similar
Icelandair
Sep 24
SEA3:45 pmSeattle/Tacoma Intl
12h 05m
1 stop
BRU12:50 pmBrussels Bruxelles-National
Oct 11
BRU1:50 pmBrussels Bruxelles-National
15h 50m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$463
Find similar

Scandinavian Airlines flights from State of Washington to Brussels

Our best Scandinavian Airlines deals on State of Washington to Brussels flight tickets
Scandinavian Airlines
Oct 10
SEA4:20 pmSeattle/Tacoma Intl
33h 55m
2 stops
BRU11:15 amBrussels Bruxelles-National
Oct 20
BRU9:15 pmBrussels Bruxelles-National
49h 45m
2 stops
SEA2:00 pmSeattle/Tacoma Intl
$597
Find similar
Scandinavian Airlines
Oct 30
PDX12:50 pmPortland
24h 05m
3 stops
BRU8:55 pmBrussels Bruxelles-National
Nov 13
BRU10:20 amBrussels Bruxelles-National
22h 09m
2 stops
PDX11:29 pmPortland
$655
Find similar
Scandinavian Airlines
Oct 1
PDX10:20 amPortland
24h 30m
2 stops
BRU7:50 pmBrussels Bruxelles-National
Oct 9
BRU10:20 amBrussels Bruxelles-National
21h 33m
2 stops
PDX10:53 pmPortland
$680
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Brussels 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 7, 2025.
Use the filters below to find and compare flights from Washington to Brussels that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 8/22

11:30 pm-12:50 pm

1 stop28h 20m

Brussels Bruxelles-National

Mon 9/1

1:50 pm-11:25 am

1 stop30h 35m

$433

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/24

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Sat 10/11

1:50 pm-8:40 pm

1 stop15h 50m

$446

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 11/24

8:05 pm-6:15 pm

1 stop13h 10m

Brussels Bruxelles-National

Wed 12/3

10:15 am-6:20 pm

1 stop17h 05m

$448

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/24

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Sat 10/11

1:50 pm-8:40 pm

1 stop15h 50m

$463

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/12

6:50 pm-4:20 pm

1 stop12h 30m

Brussels Bruxelles-National

Tue 11/18

12:00 pm-4:55 pm

1 stop13h 55m

$468

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/1

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Tue 9/16

1:50 pm-8:40 pm

1 stop15h 50m

$469

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/12

7:23 am-6:25 pm

2 stops26h 02m

Brussels Bruxelles-National

Tue 11/18

7:05 am-10:24 pm

2 stops24h 19m

$472

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/12

7:20 am-9:00 am

1 stop16h 40m

Brussels Bruxelles-National

Tue 11/18

11:00 am-7:29 pm

1 stop17h 29m

$483

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 12/14

5:45 pm-11:10 am

1 stop32h 25m

Brussels Bruxelles-National

Wed 12/24

11:50 am-3:55 pm

1 stop13h 05m

$698

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 8/20

7:24 am-8:40 am

1 stop16h 16m

Brussels Bruxelles-National

Tue 9/2

10:45 am-9:31 pm

1 stop19h 46m

$785

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 State of Washington to Brussels

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 Brussels?

In general, November is the cheapest month to fly from State of Washington to Brussels. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $528. If you are unable to visit Brussels during the month of November, then departing from State of Washington during the month September is also very affordable. Most momondo users find prices during this month for around $533.

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

On average, the least expensive day to fly to Brussels from State of Washington is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $626. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $783.

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

According to our data, the cheapest time of day to fly to Brussels is in the morning. momondo users have found flights departing from State of Washington to Brussels in the morning for as low as $668. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $738.

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

You are more likely to see cheaper flights to Brussels from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels for around $620 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Brussels from State of Washington for as low as $517 on momondo.

Cheap State of Washington to Brussels flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Brussels

Best Price Found

$309

Fastest flight time

11h 45m

Direct flights

None

Airports in Brussels

2 airports
The best one-way flight to Brussels from State of Washington in the past 72 hours is $309. The best round-trip flight deal from State of Washington to Brussels found on momondo in the last 72 hours is $433.
The fastest flight from State of Washington to Brussels takes 11h 45m
There are no direct flights from State of Washington to Brussels. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Brussels Bruxelles-National Airport, Seattle/Tacoma Intl Airport - Charleroi Brussels Airport and Portland Airport - Brussels Bruxelles-National Airport.
There are 2 airports near Brussels: Brussels Bruxelles-National (BRU), Charleroi Brussels (CRL)
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  • When did momondo last update prices for flights from Washington to Brussels?

    Prices for flights from Washington to Brussels are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Brussels?

  • How old do you have to be to fly from Washington to Brussels?

    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 Washington to Brussels.

  • What documentation or ID do you need to fly to Brussels?

    The travel and health documents you'll need for your trip to Brussels may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Brussels. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Brussels

Compare and see reviews for airlines that fly from State of Washington to Brussels with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $389Free CancellationRating
7.0
524 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom $491Free CancellationRating
7.4
657 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $501Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $501Free CancellationRating
6.6
7,251 reviews
Search British Airways flights
KLMPriceFrom $511Free CancellationRating
7.8
1,381 reviews
Search KLM flights
DeltaPriceFrom $514Free CancellationRating
8.0
7,985 reviews
Search Delta flights
United AirlinesPriceFrom $522Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights
Aer LingusPriceFrom $532Free CancellationRating
7.1
1,202 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
9,893 reviews
Search Air Canada flights
Air FrancePriceFrom $554Free CancellationRating
7.4
1,465 reviews
Search Air France flights

Why use momondo?

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

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 Brussels from Washington.

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

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

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

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

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

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

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Find better results for your trip to Belgium

Fly into one of these airports located in Brussels

Airports listed have a maximum distance of 27.4 mi from Brussels
Brussels Bruxelles-National Airport
Charleroi Brussels Airport