What is the cheapest airline that flies from Washington to Brussels?

United Airlines, Icelandair, and Air Canada are the most popular carriers operating from Washington to Brussels

What airlines fly to Brussels?

Icelandair, KLM and Lufthansa are the top three most popular airlines that fly to Brussels from State of Washington according to our data. Icelandair is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Brussels. Keep in mind that there are 9 different airlines that fly to Brussels on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Washington to Brussels is 9 as of February 2026.

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.

$216 Cheap Flights from Washington to Brussels in 2026

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Find the cheapest flights from Washington to Brussels

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 12:55 pm

SEA

BRU

12h 15m

1 stop

1:50 pm - 8:40 pm

BRU

SEA

15h 50m

1 stop

$409Icelandair

Wed, Apr 22 - Thu, May 7

3:35 pm - 11:55 am

SEA

BRU

12h 20m

1 stop

1:50 pm - 8:40 pm

BRU

SEA

15h 50m

1 stop

$447Icelandair

Wed, Mar 25 - Mon, Mar 30

3:15 pm - 8:55 am

PDX

BRU

33h 40m

2 stops

10:00 am - 9:15 am

BRU

PDX

55h 15m

2 stops

$468Air Canada

Sun, Mar 8 - Tue, Mar 24

3:40 pm - 4:15 pm

SEA

BRU

15h 35m

2 stops

9:25 am - 10:50 pm

BRU

SEA

22h 25m

2 stops

$469Multiple Airlines

Tue, Apr 7 - Tue, Apr 21

8:00 pm - 7:10 am

SEA

BRU

26h 10m

2 stops

8:30 am - 12:20 pm

BRU

SEA

12h 50m

1 stop

$473Multiple Airlines

Tue, Apr 7 - Tue, Apr 21

3:40 pm - 8:00 pm

SEA

BRU

19h 20m

2 stops

10:00 am - 10:16 pm

BRU

SEA

20h 16m

2 stops

$475Multiple Airlines

Thu, Mar 5 - Tue, Mar 10

9:50 am - 8:55 am

PDX

BRU

39h 05m

2 stops

1:50 pm - 12:35 am

BRU

PDX

18h 45m

2 stops

$475Multiple Airlines

Mon, Mar 9 - Mon, Mar 23

5:00 am - 1:15 pm

SEA

BRU

23h 15m

2 stops

10:00 am - 8:56 pm

BRU

SEA

42h 56m

2 stops

$486United Airlines

Fri, Mar 6 - Wed, Mar 11

5:20 pm - 1:15 pm

SEA

BRU

34h 55m

2 stops

10:00 am - 7:03 pm

BRU

SEA

41h 03m

2 stops

$487United Airlines

Sat, Mar 7 - Wed, Mar 25

3:10 pm - 1:10 pm

SEA

BRU

13h 00m

1 stop

9:05 am - 2:20 pm

BRU

SEA

13h 15m

1 stop

$488Lufthansa

Fri, Mar 6 - Wed, Mar 11

Air Canada flights from State of Washington to Brussels

Our best Air Canada deals on State of Washington to Brussels flight tickets

Air Canada

Mar 8

PDX3:15 pmPortland

33h 40m

2 stops

BRU8:55 amBrussels Bruxelles-National

Mar 24

BRU10:00 amBrussels Bruxelles-National

55h 15m

2 stops

PDX9:15 amPortland

$468

Air Canada

Mar 19

SEA5:40 amSeattle/Tacoma Intl

18h 10m

2 stops

BRU7:50 amBrussels Bruxelles-National

Mar 26

BRU10:00 amBrussels Bruxelles-National

44h 16m

2 stops

SEA10:16 pmSeattle/Tacoma Intl

$510

Air Canada

Mar 13

SEA8:00 amSeattle/Tacoma Intl

39h 50m

2 stops

BRU7:50 amBrussels Bruxelles-National

Mar 23

BRU10:00 amBrussels Bruxelles-National

44h 16m

2 stops

SEA10:16 pmSeattle/Tacoma Intl

$519

United Airlines flights from State of Washington to Brussels

Our best United Airlines deals on State of Washington to Brussels flight tickets

United Airlines

Mar 6

SEA5:00 amSeattle/Tacoma Intl

23h 15m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Mar 11

BRU10:00 amBrussels Bruxelles-National

42h 56m

2 stops

SEA8:56 pmSeattle/Tacoma Intl

$486

United Airlines

Mar 7

SEA5:20 pmSeattle/Tacoma Intl

34h 55m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Mar 25

BRU10:00 amBrussels Bruxelles-National

41h 03m

2 stops

SEA7:03 pmSeattle/Tacoma Intl

$487

United Airlines

Apr 22

SEA10:48 amSeattle/Tacoma Intl

24h 12m

2 stops

BRU8:00 pmBrussels Bruxelles-National

May 7

BRU9:25 amBrussels Bruxelles-National

19h 12m

1 stop

SEA7:37 pmSeattle/Tacoma Intl

$489

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/22

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 5/7

1:50 pm-8:40 pm

1 stop15h 50m

$409

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/25

3:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Mon 3/30

1:50 pm-8:40 pm

1 stop15h 50m

$447

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 3/8

3:15 pm-8:55 am

2 stops33h 40m

Brussels Bruxelles-National

Tue 3/24

10:00 am-9:15 am

2 stops55h 15m

$468

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 4/7

3:40 pm-4:15 pm

2 stops15h 35m

Brussels Bruxelles-National

Tue 4/21

9:25 am-10:50 pm

2 stops22h 25m

$469

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 4/7

8:00 pm-7:10 am

2 stops26h 10m

Brussels Bruxelles-National

Tue 4/21

8:30 am-12:20 pm

1 stop12h 50m

$473

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 3/5

3:40 pm-8:00 pm

2 stops19h 20m

Brussels Bruxelles-National

Tue 3/10

10:00 am-10:16 pm

2 stops20h 16m

$475

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 3/9

9:50 am-8:55 am

2 stops39h 05m

Brussels Bruxelles-National

Mon 3/23

1:50 pm-12:35 am

2 stops18h 45m

$475

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 3/6

5:00 am-1:15 pm

2 stops23h 15m

Brussels Bruxelles-National

Wed 3/11

10:00 am-8:56 pm

2 stops42h 56m

$486

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 3/7

5:20 pm-1:15 pm

2 stops34h 55m

Brussels Bruxelles-National

Wed 3/25

10:00 am-7:03 pm

2 stops41h 03m

$487

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 3/6

3:10 pm-1:10 pm

1 stop13h 00m

Brussels Bruxelles-National

Wed 3/11

9:05 am-2:20 pm

1 stop13h 15m

$488

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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.

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 $614 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 $542 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?
The number of operators available for flights from Washington to Brussels is 9 as of February 2026.
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
Icelandair	PriceFrom $385	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
British Airways	PriceFrom $436	Free Cancellation	Rating 6.7 7,714 reviews	Search British Airways flights
Delta	PriceFrom $482	Free Cancellation	Rating 7.9 8,141 reviews	Search Delta flights
United Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 9,235 reviews	Search United Airlines flights
KLM	PriceFrom $486	Free Cancellation	Rating 7.7 1,448 reviews	Search KLM flights
Virgin Atlantic	PriceFrom $488	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom $494	Free Cancellation	Rating 6.8 7,759 reviews	Search Lufthansa flights
Air Canada	PriceFrom $518	Free Cancellation	Rating 7.1 10,687 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $536	Free Cancellation	Rating 7.2 1,444 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.

An easier way to manage your Brussels trip

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Cheap flights from Washington to Brussels from $216

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 5/13. 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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Air Canada flights from State of Washington to Brussels

Our best Air Canada deals on State of Washington to Brussels flight tickets

United Airlines flights from State of Washington to Brussels

Our best United Airlines deals on State of Washington to Brussels flight tickets

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See travel insights to Brussels from

How to get the cheapest flight ticket from State of Washington to Brussels

What is the cheapest month to fly to Brussels?

How far in advance should I book a flight to Brussels?

What is the cheapest airline that flies from Washington to Brussels?

United Airlines, Icelandair, and Air Canada are the most popular carriers operating from Washington to Brussels

What airlines fly to Brussels?

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

Direct flights

When did momondo last update prices for flights from Washington to Brussels?

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?

What documentation or ID do you need to fly to Brussels?

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

Why use momondo?

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

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

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

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

An easier way to manage your Brussels trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Brussels

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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