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Cheap flights from Washington to Brussels from $353

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 2/14. 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 am
SEA
-
BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m1 stop
$383Icelandair
Thu, Jan 8 - Fri, Jan 23
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m1 stop
$385Icelandair
Thu, Jan 15 - Thu, Jan 29
Icelandair Logo
2:35 pm - 11:55 am
SEA
-
BRU
12h 20m1 stop
Icelandair Logo
12:50 pm - 5:00 pm
BRU
-
SEA
13h 10m1 stop
$389Icelandair
Wed, Jan 14 - Fri, Jan 23
Multiple Airlines Logo
7:00 am - 8:55 am
PDX
-
BRU
16h 55m1 stop
Multiple Airlines Logo
9:35 am - 6:30 pm
BRU
-
PDX
17h 55m2 stops
$451Multiple Airlines
Wed, Jan 14 - Fri, Jan 23
Lufthansa Logo
7:00 am - 8:55 am
PDX
-
BRU
16h 55m1 stop
Lufthansa Logo
10:10 am - 6:56 pm
BRU
-
PDX
17h 46m1 stop
$454Lufthansa
Mon, Jan 12 - Sun, Jan 25
Lufthansa Logo
7:00 am - 8:55 am
PDX
-
BRU
16h 55m1 stop
Lufthansa Logo
10:10 am - 6:56 pm
BRU
-
PDX
17h 46m1 stop
$455Lufthansa
Mon, Jan 12 - Sun, Jan 25
Multiple Airlines Logo
7:00 am - 8:55 am
PDX
-
BRU
16h 55m1 stop
Multiple Airlines Logo
10:10 am - 6:56 pm
BRU
-
PDX
17h 46m1 stop
$463Multiple Airlines
Wed, Jan 14 - Fri, Jan 23
Air Canada Logo
7:00 pm - 8:55 am
PDX
-
BRU
52h 55m2 stops
Air Canada Logo
10:00 am - 9:15 am
BRU
-
PDX
32h 15m2 stops
$468Air Canada
Mon, Jan 12 - Sun, Jan 25
Air Canada Logo
3:40 pm - 7:50 am
SEA
-
BRU
31h 10m2 stops
Air Canada Logo
10:00 am - 2:31 pm
BRU
-
SEA
37h 31m2 stops
$469Air Canada
Thu, Jan 15 - Thu, Jan 29
United Airlines Logo
11:59 pm - 1:15 pm
PDX
-
BRU
28h 16m2 stops
United Airlines Logo
10:00 am - 6:56 pm
BRU
-
PDX
41h 56m2 stops
$485United Airlines
Mon, Jan 12 - Sun, Jan 25

Icelandair flights from State of Washington to Brussels

Our best Icelandair deals on State of Washington to Brussels flight tickets
Icelandair
Jan 8
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Jan 23
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$383
Find similar
Icelandair
Jan 15
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Jan 29
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$385
Find similar
Icelandair
Jan 14
SEA2:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
BRU11:55 amBrussels Bruxelles-National
Jan 23
BRU12:50 pmBrussels Bruxelles-National
13h 10m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
$389
Find similar

Lufthansa flights from State of Washington to Brussels

Our best Lufthansa deals on State of Washington to Brussels flight tickets
Lufthansa
Jan 12
PDX7:00 amPortland
16h 55m
1 stop
BRU8:55 amBrussels Bruxelles-National
Jan 25
BRU10:10 amBrussels Bruxelles-National
17h 46m
1 stop
PDX6:56 pmPortland
$454
Find similar
Lufthansa
Jan 12
PDX7:00 amPortland
16h 55m
1 stop
BRU8:55 amBrussels Bruxelles-National
Jan 25
BRU10:10 amBrussels Bruxelles-National
17h 46m
1 stop
PDX6:56 pmPortland
$455
Find similar
Lufthansa
Jan 14
SEA3:10 pmSeattle/Tacoma Intl
19h 45m
1 stop
BRU7:55 pmBrussels Bruxelles-National
Jan 23
BRU10:00 amBrussels Bruxelles-National
18h 16m
2 stops
SEA7:16 pmSeattle/Tacoma Intl
$483
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 December 15, 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

Thu 1/8

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Fri 1/23

12:50 pm-5:00 pm

1 stop13h 10m

$383

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 1/15

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 1/29

12:50 pm-5:00 pm

1 stop13h 10m

$385

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 1/14

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Fri 1/23

12:50 pm-5:00 pm

1 stop13h 10m

$389

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 1/14

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Fri 1/23

9:35 am-6:30 pm

2 stops17h 55m

$451

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 1/12

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Sun 1/25

10:10 am-6:56 pm

1 stop17h 46m

$454

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 1/12

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Sun 1/25

10:10 am-6:56 pm

1 stop17h 46m

$455

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 1/14

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Fri 1/23

10:10 am-6:56 pm

1 stop17h 46m

$463

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 1/12

7:00 pm-8:55 am

2 stops52h 55m

Brussels Bruxelles-National

Sun 1/25

10:00 am-9:15 am

2 stops32h 15m

$468

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 1/15

3:40 pm-7:50 am

2 stops31h 10m

Brussels Bruxelles-National

Thu 1/29

10:00 am-2:31 pm

2 stops37h 31m

$469

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 1/12

11:59 pm-1:15 pm

2 stops28h 16m

Brussels Bruxelles-National

Sun 1/25

10:00 am-6:56 pm

2 stops41h 56m

$485

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, October 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 $476. If you are unable to visit Brussels during the month of October, then departing from State of Washington during the month September is also very affordable. Most momondo users find prices during this month for around $514.

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 $628 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 $537 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

Fastest flight time

12h 15m

Direct flights

None
The fastest flight from State of Washington to Brussels takes 12h 15m
There are no direct flights from State of Washington to Brussels. There are no popular flight routes from State of Washington to Brussels.
Search flight deals

  • 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 $387Free CancellationRating
7.0
590 reviews
Search Icelandair flights
DeltaPriceFrom $482Free CancellationRating
7.9
8,008 reviews
Search Delta flights
British AirwaysPriceFrom $486Free CancellationRating
6.7
7,575 reviews
Search British Airways flights
Virgin AtlanticPriceFrom $488Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
LufthansaPriceFrom $501Free CancellationRating
6.8
7,628 reviews
Search Lufthansa flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
Air FrancePriceFrom $506Free CancellationRating
7.4
1,506 reviews
Search Air France flights
KLMPriceFrom $511Free CancellationRating
7.7
1,430 reviews
Search KLM flights
Air CanadaPriceFrom $518Free CancellationRating
7.1
10,525 reviews
Search Air Canada flights
Aer LingusPriceFrom $532Free CancellationRating
7.2
1,394 reviews
Search Aer Lingus 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