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Cheap flights from Washington to Brussels from $263

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 4/18. 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
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
$531Icelandair
Sat, Apr 18 - Fri, May 1
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
BRU
-
SEA
15h 50m
1 stop
$536Icelandair
Thu, Apr 16 - Thu, Apr 23
Icelandair Logo
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
$567Icelandair
Sat, Apr 18 - Fri, May 1
Icelandair Logo
7:00 pm - 12:55 pm
SEA
-
BRU
32h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
$570Icelandair
Sat, Apr 18 - Fri, May 1
SWISS Logo
1:14 pm - 9:30 pm
PDX
-
BRU
23h 16m
2 stops
SWISS Logo
6:55 am - 7:06 pm
BRU
-
PDX
21h 11m
2 stops
$727SWISS
Tue, Sep 1 - Tue, Sep 22
SWISS Logo
7:00 am - 8:50 am
PDX
-
BRU
16h 50m
2 stops
SWISS Logo
6:55 am - 11:09 pm
BRU
-
PDX
25h 14m
2 stops
$736SWISS
Wed, Sep 2 - Fri, Sep 11
Multiple Airlines Logo
3:30 pm - 7:10 pm
PDX
-
BRU
18h 40m
2 stops
Multiple Airlines Logo
9:50 am - 6:00 pm
BRU
-
PDX
17h 10m
2 stops
$747Multiple Airlines
Mon, Apr 13 - Sun, Apr 19
Multiple Airlines Logo
3:30 pm - 8:00 pm
PDX
-
BRU
19h 30m
2 stops
Multiple Airlines Logo
9:30 am - 11:55 pm
BRU
-
PDX
23h 25m
2 stops
$748Multiple Airlines
Wed, May 6 - Wed, May 13
United Airlines Logo
7:00 am - 9:00 am
PDX
-
BRU
17h 00m
1 stop
United Airlines Logo
9:25 am - 12:47 am
BRU
-
PDX
24h 22m
2 stops
$750United Airlines
Tue, Sep 1 - Tue, Sep 22
United Airlines Logo
10:35 am - 1:15 pm
PDX
-
BRU
17h 40m
2 stops
United Airlines Logo
12:00 pm - 8:20 pm
BRU
-
PDX
17h 20m
1 stop
$752United Airlines
Wed, Sep 2 - Fri, Sep 11

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

Our best Lufthansa deals on State of Washington to Brussels Bruxelles-National Airport flight tickets
Lufthansa
Apr 19
SEA6:50 pmSeattle/Tacoma Intl
16h 05m
1 stop
BRU7:55 pmBrussels Bruxelles-National
Apr 26
BRU9:35 amBrussels Bruxelles-National
16h 24m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$650
Lufthansa
Apr 19
SEA2:10 pmSeattle/Tacoma Intl
14h 30m
1 stop
BRU1:40 pmBrussels Bruxelles-National
May 3
BRU9:35 amBrussels Bruxelles-National
16h 24m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$653
Lufthansa
Apr 19
SEA2:10 pmSeattle/Tacoma Intl
13h 35m
1 stop
BRU12:45 pmBrussels Bruxelles-National
May 3
BRU12:45 pmBrussels Bruxelles-National
13h 14m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$656

United Airlines flights from State of Washington to Brussels Bruxelles-National Airport

Our best United Airlines deals on State of Washington to Brussels Bruxelles-National Airport flight tickets
United Airlines
Apr 21
SEA3:45 pmSeattle/Tacoma Intl
19h 15m
2 stops
BRU8:00 pmBrussels Bruxelles-National
May 1
BRU7:00 amBrussels Bruxelles-National
14h 20m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$666
United Airlines
Apr 18
SEA11:59 pmSeattle/Tacoma Intl
28h 16m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Apr 30
BRU8:30 amBrussels Bruxelles-National
12h 50m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$670
United Airlines
Apr 19
SEA3:40 pmSeattle/Tacoma Intl
19h 20m
2 stops
BRU8:00 pmBrussels Bruxelles-National
May 3
BRU7:00 amBrussels Bruxelles-National
24h 40m
2 stops
SEA10:40 pmSeattle/Tacoma Intl
$672

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 March 24, 2026.
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

Cheapest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 5/1

1:50 pm-5:55 pm

1 stop13h 05m

$531
Quickest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 4/16

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 4/23

1:50 pm-8:40 pm

1 stop15h 50m

$536

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 5/1

1:50 pm-5:55 pm

1 stop13h 05m

$567

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 5/1

1:50 pm-5:55 pm

1 stop13h 05m

$570

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 9/1

1:14 pm-9:30 pm

2 stops23h 16m

Brussels Bruxelles-National

Tue 9/22

6:55 am-7:06 pm

2 stops21h 11m

$727

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/2

7:00 am-8:50 am

2 stops16h 50m

Brussels Bruxelles-National

Fri 9/11

6:55 am-11:09 pm

2 stops25h 14m

$736

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 4/13

3:30 pm-7:10 pm

2 stops18h 40m

Brussels Bruxelles-National

Sun 4/19

9:50 am-6:00 pm

2 stops17h 10m

$747

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 5/6

3:30 pm-8:00 pm

2 stops19h 30m

Brussels Bruxelles-National

Wed 5/13

9:30 am-11:55 pm

2 stops23h 25m

$748

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 9/1

7:00 am-9:00 am

1 stop17h 00m

Brussels Bruxelles-National

Tue 9/22

9:25 am-12:47 am

2 stops24h 22m

$750

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/2

10:35 am-1:15 pm

2 stops17h 40m

Brussels Bruxelles-National

Fri 9/11

12:00 pm-8:20 pm

1 stop17h 20m

$752

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 January instead. Flights to Brussels Bruxelles-National Airport in January, while not as cheap as those in October, still average around $510.

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 $610 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 $533 on momondo.

Can stopping save me money on State of Washington to Brussels Bruxelles-National Airport flights?

You could potentially save up to 18% on your flight if you consider stops on a State of Washington to Brussels Bruxelles-National Airport flight.

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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from State of Washington to Brussels Bruxelles-National Airport takes 12h 15m
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.
Search flight deals

  • 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 $383Free CancellationRating
7.0
625 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
7,817 reviews
Search British Airways flights
United AirlinesPriceFrom $470Free CancellationRating
7.4
9,475 reviews
Search United Airlines flights
KLMPriceFrom $481Free CancellationRating
7.8
1,477 reviews
Search KLM flights
DeltaPriceFrom $482Free CancellationRating
7.9
8,326 reviews
Search Delta flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.5
685 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,867 reviews
Search Lufthansa flights
Air CanadaPriceFrom $518Free CancellationRating
7.1
10,837 reviews
Search Air Canada flights

Traveling to a place near Brussels?

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