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Cheap flights from Washington to Brussels from $355

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 11/4. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
2:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
$386Icelandair
Find Deal
Thu, Nov 6 - Thu, Nov 20
Icelandair Logo
2:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
$391Icelandair
Find Deal
Wed, Nov 5 - Thu, Nov 13
Multiple Airlines Logo
3:40 pm - 8:00 pmSEA-BRU
19h 20m2 stops
Multiple Airlines Logo
10:00 am - 7:16 pmBRU-SEA
18h 16m2 stops
$452Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
3:40 pm - 8:00 pmSEA-BRU
19h 20m2 stops
Multiple Airlines Logo
10:00 am - 10:06 pmBRU-SEA
21h 06m2 stops
$465Multiple Airlines
Find Deal
Wed, Nov 5 - Thu, Nov 13
United Airlines Logo
7:00 am - 1:15 pmSEA-BRU
21h 15m2 stops
United Airlines Logo
10:00 am - 11:40 amBRU-SEA
33h 40m2 stops
$482United Airlines
Find Deal
Tue, Feb 10 - Tue, Mar 10
United Airlines Logo
8:00 am - 7:15 amSEA-BRU
14h 15m1 stop
United Airlines Logo
10:00 am - 6:52 pmBRU-SEA
41h 52m2 stops
$485United Airlines
Find Deal
Wed, Nov 5 - Thu, Nov 13
Air Canada Logo
5:50 am - 7:50 amSEA-BRU
17h 00m2 stops
Air Canada Logo
10:00 am - 7:16 pmBRU-SEA
18h 16m2 stops
$488Air Canada
Find Deal
Thu, Nov 6 - Thu, Nov 20
Lufthansa Logo
3:10 pm - 1:10 pmSEA-BRU
13h 00m1 stop
Lufthansa Logo
9:05 am - 1:20 pmBRU-SEA
13h 15m1 stop
$489Lufthansa
Find Deal
Wed, Nov 5 - Wed, Nov 19
Lufthansa Logo
2:00 pm - 12:35 pmSEA-BRU
13h 35m1 stop
Lufthansa Logo
8:30 am - 11:55 amBRU-SEA
12h 25m1 stop
$493Lufthansa
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Tue, Mar 3 - Wed, Apr 1
Air Canada Logo
10:05 am - 1:15 pmSEA-BRU
42h 10m2 stops
Air Canada Logo
10:00 am - 10:16 pmBRU-SEA
45h 16m2 stops
$521Air Canada
Find Deal
Sun, Nov 16 - Sat, Dec 13

Icelandair flights from State of Washington to Brussels Bruxelles-National Airport

Our best Icelandair deals on State of Washington to Brussels Bruxelles-National Airport flight tickets
Icelandair
Nov 6
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Nov 20
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$386
Find similar
Icelandair
Nov 5
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Nov 13
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$391
Find similar
Icelandair
Nov 5
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Nov 13
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$393
Find similar

Air Canada flights from State of Washington to Brussels Bruxelles-National Airport

Our best Air Canada deals on State of Washington to Brussels Bruxelles-National Airport flight tickets
Air Canada
Nov 6
SEA5:50 amSeattle/Tacoma Intl
17h 00m
2 stops
BRU7:50 amBrussels Bruxelles-National
Nov 20
BRU10:00 amBrussels Bruxelles-National
18h 16m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$488
Find similar
Air Canada
Nov 16
SEA10:05 amSeattle/Tacoma Intl
42h 10m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Dec 13
BRU10:00 amBrussels Bruxelles-National
45h 16m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$521
Find similar
Air Canada
Nov 12
SEA8:10 amSeattle/Tacoma Intl
20h 05m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Nov 18
BRU2:25 pmBrussels Bruxelles-National
37h 51m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$522
Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 11/6

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 11/20

12:50 pm-5:00 pm

1 stop13h 10m

$386

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/5

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 11/13

12:50 pm-5:00 pm

1 stop13h 10m

$391

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/19

3:40 pm-8:00 pm

2 stops19h 20m

Brussels Bruxelles-National

Wed 11/26

10:00 am-7:16 pm

2 stops18h 16m

$452

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/5

3:40 pm-8:00 pm

2 stops19h 20m

Brussels Bruxelles-National

Thu 11/13

10:00 am-10:06 pm

2 stops21h 06m

$465

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 2/10

7:00 am-1:15 pm

2 stops21h 15m

Brussels Bruxelles-National

Tue 3/10

10:00 am-11:40 am

2 stops33h 40m

$482

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/5

8:00 am-7:15 am

1 stop14h 15m

Brussels Bruxelles-National

Thu 11/13

10:00 am-6:52 pm

2 stops41h 52m

$485

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 11/6

5:50 am-7:50 am

2 stops17h 00m

Brussels Bruxelles-National

Thu 11/20

10:00 am-7:16 pm

2 stops18h 16m

$488

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/5

3:10 pm-1:10 pm

1 stop13h 00m

Brussels Bruxelles-National

Wed 11/19

9:05 am-1:20 pm

1 stop13h 15m

$489

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 3/3

2:00 pm-12:35 pm

1 stop13h 35m

Brussels Bruxelles-National

Wed 4/1

8:30 am-11:55 am

1 stop12h 25m

$493

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 11/16

10:05 am-1:15 pm

2 stops42h 10m

Brussels Bruxelles-National

Sat 12/13

10:00 am-10:16 pm

2 stops45h 16m

$521

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 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 cheapest month to fly to Brussels Bruxelles-National Airport?

The cheapest month to fly to Brussels Bruxelles-National Airport from State of Washington is in October. Flight prices, which tend to average around $463, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Brussels Bruxelles-National Airport from State of Washington during September instead. Flights to Brussels Bruxelles-National Airport in September, while not as cheap as those in October, still average around $518.

What is the cheapest day to depart on your flight to Brussels Bruxelles-National Airport?

The cheapest day to depart from State of Washington to Brussels Bruxelles-National Airport is on a Tuesday. Travelers who choose to depart for Brussels Bruxelles-National Airport on a Tuesday will often find tickets for as low as $626. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Brussels Bruxelles-National Airport for around $783.

What is the cheapest time of day to depart on your flight to Brussels Bruxelles-National Airport?

Our most recent data shows that the best time of day to fly to Brussels Bruxelles-National Airport is in the morning. Flights from State of Washington to Brussels Bruxelles-National Airport during this time can be as low as $668. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $738 on average. Flights to Brussels Bruxelles-National Airport from State of Washington at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Brussels Bruxelles-National Airport?

You are more likely to see cheaper flights to Brussels Bruxelles-National Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Brussels Bruxelles-National Airport for around $624 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 State of Washington for as low as $524 on momondo.

Cheap State of Washington to Brussels Bruxelles-National Airport flight deals and tips

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

Direct flights

None
There are no direct flights from State of Washington to Brussels Bruxelles-National Airport. There are no popular flight routes from State of Washington to Brussels Bruxelles-National Airport.
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  • When did momondo last update prices for flights from Washington to Brussels Bruxelles-National Airport?

    Prices for flights from Washington to Brussels Bruxelles-National Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Brussels Bruxelles-National Airport?

  • How old do you have to be to fly from Washington to Brussels Bruxelles-National 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 Washington to Brussels Bruxelles-National Airport.

  • What documentation or ID do you need to fly to Brussels Bruxelles-National Airport?

    The travel and health documents you'll need for your trip to Brussels Bruxelles-National Airport 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 Bruxelles-National Airport. 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 Bruxelles-National Airport

Compare and see reviews for airlines that fly from State of Washington to Brussels Bruxelles-National Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $391Free CancellationRating
7.0
550 reviews
Search Icelandair flights
United AirlinesPriceFrom $483Free CancellationRating
7.4
8,955 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.4
665 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom $503Free CancellationRating
6.7
7,430 reviews
Search British Airways flights
Air FrancePriceFrom $506Free CancellationRating
7.4
1,467 reviews
Search Air France flights
DeltaPriceFrom $514Free CancellationRating
7.9
7,966 reviews
Search Delta flights
KLMPriceFrom $521Free CancellationRating
7.8
1,394 reviews
Search KLM flights
Aer LingusPriceFrom $532Free CancellationRating
7.2
1,314 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $556Free CancellationRating
7.1
10,245 reviews
Search Air Canada flights
LufthansaPriceFrom $561Free CancellationRating
6.8
7,455 reviews
Search Lufthansa flights

Traveling to a place near Brussels?

Book flights to Brussels if you plan to visit one of these locations
Ghent
Bruges
Leuven
Charleroi
Hasselt
Spa
Namur
Dinant
Zaventem
Mons
Genk
Waterloo
Mechelen
Francorchamps
Knokke-Heist
Aalst
Tournai
Durbuy
Oostkamp
Halle

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Brussels for you.

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

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

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

Once you have performed a search for Washington to Brussels flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Brussels, momondo offers a useful price alert feature which will track prices for flights to Brussels from Washington and alert you when they change.

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