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Cheap flights from Washington to Brussels from $321

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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0 bags

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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
vie., ago. 22 - lun., 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
mié., sep. 24 - sáb., 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
lun., nov. 24 - mié., dic. 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
mié., sep. 24 - sáb., 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
mié., nov. 12 - mar., 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
lun., sep. 1 - mar., 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
mié., nov. 12 - mar., 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
mié., nov. 12 - mar., 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
Find Deal
dom., dic. 14 - mié., dic. 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
mié., ago. 20 - mar., sep. 2

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
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 Bruxelles-National Airport

Our best Scandinavian Airlines deals on State of Washington to Brussels Bruxelles-National Airport 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 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 agosto 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

vie. 8/22

11:30 pm-12:50 pm

1 stop28h 20m

Brussels Bruxelles-National

lun. 9/1

1:50 pm-11:25 am

1 stop30h 35m

$433

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 9/24

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

sáb. 10/11

1:50 pm-8:40 pm

1 stop15h 50m

$446

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

lun. 11/24

8:05 pm-6:15 pm

1 stop13h 10m

Brussels Bruxelles-National

mié. 12/3

10:15 am-6:20 pm

1 stop17h 05m

$448

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 9/24

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

sáb. 10/11

1:50 pm-8:40 pm

1 stop15h 50m

$463

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 11/12

6:50 pm-4:20 pm

1 stop12h 30m

Brussels Bruxelles-National

mar. 11/18

12:00 pm-4:55 pm

1 stop13h 55m

$468

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

lun. 9/1

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

mar. 9/16

1:50 pm-8:40 pm

1 stop15h 50m

$469

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 11/12

7:23 am-6:25 pm

2 stops26h 02m

Brussels Bruxelles-National

mar. 11/18

7:05 am-10:24 pm

2 stops24h 19m

$472

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 11/12

7:20 am-9:00 am

1 stop16h 40m

Brussels Bruxelles-National

mar. 11/18

11:00 am-7:29 pm

1 stop17h 29m

$483

PortlandBrussels

PDX - BRU

PDXBRU

Portland

dom. 12/14

5:45 pm-11:10 am

1 stop32h 25m

Brussels Bruxelles-National

mié. 12/24

11:50 am-3:55 pm

1 stop13h 05m

$698

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mié. 8/20

7:24 am-8:40 am

1 stop16h 16m

Brussels Bruxelles-National

mar. 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 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 November. Flight prices, which tend to average around $528, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, 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 November, still average around $533.

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 $620 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 $517 on momondo.

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

You could potentially save up to 53% 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

Best Price Found

$321

Fastest flight time

11h 45m

Direct flights

None
The best one-way flight to Brussels Bruxelles-National Airport from State of Washington in the past 72 hours is $321. The best round-trip flight deal from State of Washington to Brussels Bruxelles-National Airport found on momondo in the last 72 hours is $433.
The fastest flight from State of Washington to Brussels Bruxelles-National Airport takes 11h 45m
There are no direct flights from State of Washington to Brussels Bruxelles-National Airport. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Brussels Bruxelles-National Airport and Portland Airport - 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 $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
1,466 reviews
Search Air France flights

Traveling to a place near Brussels?

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

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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