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Cheap flights from Washington to Brussels from $297

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 9/1. 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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Find the cheapest flights from Washington to Brussels

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
Icelandair Logo
12:50 pm - 6:00 pm
BRU
-
SEA
13h 10m
1 stop
$642Icelandair
Sun, Oct 18 - Thu, Oct 29
Icelandair Logo
11:25 pm - 12:55 pm
SEA
-
BRU
28h 30m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
$645Icelandair
Sat, Aug 1 - Mon, Oct 5
Icelandair Logo
3:40 pm - 12:55 pm
SEA
-
BRU
12h 15m
1 stop
Icelandair Logo
12:50 pm - 6:00 pm
BRU
-
SEA
13h 10m
1 stop
$648Icelandair
Sun, Oct 18 - Thu, Oct 29
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
$650Icelandair
Mon, Oct 5 - Thu, Oct 15
Icelandair Logo
11:25 pm - 12:55 pm
SEA
-
BRU
28h 30m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
BRU
-
SEA
13h 05m
1 stop
$662Icelandair
Wed, Sep 2 - Fri, Sep 11
Air Canada Logo
10:05 am - 1:15 pm
PDX
-
BRU
42h 10m
2 stops
Air Canada Logo
10:00 am - 10:18 pm
BRU
-
PDX
45h 18m
2 stops
$745Air Canada
Wed, Nov 4 - Fri, Nov 13
Air Canada Logo
3:15 pm - 1:15 pm
PDX
-
BRU
37h 00m
2 stops
Air Canada Logo
10:00 am - 6:30 pm
BRU
-
PDX
41h 30m
2 stops
$758Air Canada
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
12:40 pm - 1:15 pm
PDX
-
BRU
15h 35m
2 stops
United Airlines Logo
10:10 am - 10:18 pm
BRU
-
PDX
21h 08m
1 stop
$770United Airlines
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
7:11 am - 8:55 am
PDX
-
BRU
16h 44m
1 stop
United Airlines Logo
10:10 am - 12:02 am
BRU
-
PDX
22h 52m
1 stop
$773United Airlines
Sun, Nov 1 - Thu, Nov 5
SWISS Logo
7:11 am - 8:50 am
PDX
-
BRU
16h 39m
2 stops
SWISS Logo
6:55 am - 7:06 pm
BRU
-
PDX
21h 11m
2 stops
$774SWISS
Wed, Sep 30 - Wed, Oct 21

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
Oct 18
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Oct 29
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
$642
Icelandair
Aug 1
SEA11:25 pmSeattle/Tacoma Intl
28h 30m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Oct 5
BRU1:50 pmBrussels Bruxelles-National
13h 05m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
$645
Icelandair
Oct 18
SEA3:40 pmSeattle/Tacoma Intl
12h 15m
1 stop
BRU12:55 pmBrussels Bruxelles-National
Oct 29
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
$648

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
Nov 1
PDX12:40 pmPortland
15h 35m
2 stops
BRU1:15 pmBrussels Bruxelles-National
Nov 5
BRU10:10 amBrussels Bruxelles-National
21h 08m
1 stop
PDX10:18 pmPortland
$770
United Airlines
Nov 1
PDX7:11 amPortland
16h 44m
1 stop
BRU8:55 amBrussels Bruxelles-National
Nov 5
BRU10:10 amBrussels Bruxelles-National
22h 52m
1 stop
PDX12:02 amPortland
$773
United Airlines
Oct 5
SEA7:20 pmSeattle/Tacoma Intl
39h 40m
2 stops
BRU8:00 pmBrussels Bruxelles-National
Oct 15
BRU6:20 amBrussels Bruxelles-National
25h 22m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$778

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 May 11, 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
Quickest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 10/29

12:50 pm-6:00 pm

1 stop13h 10m

$642

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 8/1

11:25 pm-12:55 pm

1 stop28h 30m

Brussels Bruxelles-National

Mon 10/5

1:50 pm-5:55 pm

1 stop13h 05m

$645

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 10/18

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 10/29

12:50 pm-6:00 pm

1 stop13h 10m

$648

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 10/5

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Thu 10/15

1:50 pm-5:55 pm

1 stop13h 05m

$650

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/2

11:25 pm-12:55 pm

1 stop28h 30m

Brussels Bruxelles-National

Fri 9/11

1:50 pm-5:55 pm

1 stop13h 05m

$662

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 11/4

10:05 am-1:15 pm

2 stops42h 10m

Brussels Bruxelles-National

Fri 11/13

10:00 am-10:18 pm

2 stops45h 18m

$745

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

3:15 pm-1:15 pm

2 stops37h 00m

Brussels Bruxelles-National

Thu 11/5

10:00 am-6:30 pm

2 stops41h 30m

$758

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

12:40 pm-1:15 pm

2 stops15h 35m

Brussels Bruxelles-National

Thu 11/5

10:10 am-10:18 pm

1 stop21h 08m

$770

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/1

7:11 am-8:55 am

1 stop16h 44m

Brussels Bruxelles-National

Thu 11/5

10:10 am-12:02 am

1 stop22h 52m

$773

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/30

7:11 am-8:50 am

2 stops16h 39m

Brussels Bruxelles-National

Wed 10/21

6:55 am-7:06 pm

2 stops21h 11m

$774

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 August. Flight prices, which tend to average around $219, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, 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 August, still average around $375.

How far in advance should I book a flight from Washington 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 $618 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 $503 on momondo.

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

You could potentially save up to 15% 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.
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Frequently asked questions about flying from Washington to Brussels Bruxelles-National Airport

  • 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
653 reviews
Search Icelandair flights
British AirwaysPriceFrom $421Free CancellationRating
6.7
7,972 reviews
Search British Airways flights
United AirlinesPriceFrom $470Free CancellationRating
7.4
9,700 reviews
Search United Airlines flights
KLMPriceFrom $481Free CancellationRating
7.8
1,514 reviews
Search KLM flights
DeltaPriceFrom $482Free CancellationRating
7.9
8,453 reviews
Search Delta flights
Air CanadaPriceFrom $485Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.4
688 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,992 reviews
Search Lufthansa flights

Traveling to a place near Brussels?

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