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

Icelandair, United Airlines, and Finnair 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 35% of people opting to fly with this airline when traveling to Brussels. Keep in mind that there are 8 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 8 as of May 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.

$297 Cheap Flights from Washington to Brussels in 2026

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Find the cheapest flights from Washington to Brussels

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:35 pm - 11:55 am

SEA

BRU

12h 20m

1 stop

12:50 pm - 5:00 pm

BRU

SEA

13h 10m

1 stop

$614Icelandair

Wed, Nov 4 - Tue, Nov 17

2:35 pm - 11:55 am

SEA

BRU

12h 20m

1 stop

12:50 pm - 5:00 pm

BRU

SEA

13h 10m

1 stop

$615Icelandair

Wed, Nov 4 - Thu, Nov 19

3:40 pm - 12:55 pm

SEA

BRU

12h 15m

1 stop

12:50 pm - 6:00 pm

BRU

SEA

13h 10m

1 stop

$642Icelandair

Sun, Oct 18 - Thu, Oct 29

10:05 am - 1:15 pm

PDX

BRU

42h 10m

2 stops

10:00 am - 10:18 pm

BRU

PDX

45h 18m

2 stops

$745Air Canada

Wed, Nov 4 - Fri, Nov 13

3:15 pm - 1:15 pm

PDX

BRU

37h 00m

2 stops

10:00 am - 6:30 pm

BRU

PDX

41h 30m

2 stops

$758Air Canada

Sun, Nov 1 - Thu, Nov 5

12:40 pm - 1:15 pm

PDX

BRU

15h 35m

2 stops

10:10 am - 10:18 pm

BRU

PDX

21h 08m

1 stop

$770United Airlines

Sun, Nov 1 - Thu, Nov 5

7:11 am - 8:55 am

PDX

BRU

16h 44m

1 stop

10:10 am - 12:02 am

BRU

PDX

22h 52m

1 stop

$773United Airlines

Sun, Nov 1 - Thu, Nov 5

3:36 pm - 6:35 pm

PDX

BRU

17h 59m

2 stops

6:55 am - 7:06 pm

BRU

PDX

21h 11m

2 stops

$774SWISS

Wed, Sep 30 - Wed, Oct 21

7:10 pm - 9:15 pm

SEA

CRL

17h 05m

1 stop

8:50 am - 4:00 pm

CRL

SEA

16h 10m

2 stops

$875Multiple Airlines

Sun, Aug 2 - Mon, Sep 7

8:00 am - 8:00 pm

SEA

CRL

27h 00m

3 stops

9:20 am - 6:45 pm

CRL

SEA

42h 25m

3 stops

$986Multiple Airlines

Wed, Sep 9 - Wed, Sep 23

Icelandair flights from State of Washington to Brussels

Our best Icelandair deals on State of Washington to Brussels 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

Our best United Airlines deals on State of Washington to Brussels 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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Tue 11/17

12:50 pm-5:00 pm

1 stop13h 10m

$614

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 11/4

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 11/19

12:50 pm-5:00 pm

1 stop13h 10m

$615

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

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

3:36 pm-6:35 pm

2 stops17h 59m

Brussels Bruxelles-National

Wed 10/21

6:55 am-7:06 pm

2 stops21h 11m

$774

SeattleBrussels

SEA - CRL

SEACRL

Seattle/Tacoma Intl

Sun 8/2

7:10 pm-9:15 pm

1 stop17h 05m

Charleroi Brussels

Mon 9/7

8:50 am-4:00 pm

2 stops16h 10m

$875

SeattleBrussels

SEA - CRL

SEACRL

Seattle/Tacoma Intl

Wed 9/9

8:00 am-8:00 pm

3 stops27h 00m

Charleroi Brussels

Wed 9/23

9:20 am-6:45 pm

3 stops42h 25m

$986

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, August 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 $219. If you are unable to visit Brussels during the month of August, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around $375.

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

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Frequently asked questions about flying from Washington to Brussels

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 8 as of May 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 $383	Free Cancellation	Rating 7.0 653 reviews	Search Icelandair flights
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 7,972 reviews	Search British Airways flights
United Airlines	PriceFrom $470	Free Cancellation	Rating 7.4 9,700 reviews	Search United Airlines flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,514 reviews	Search KLM flights
Delta	PriceFrom $482	Free Cancellation	Rating 7.9 8,453 reviews	Search Delta flights
Air Canada	PriceFrom $485	Free Cancellation	Rating 7.1 11,017 reviews	Search Air Canada flights
Virgin Atlantic	PriceFrom $488	Free Cancellation	Rating 7.4 688 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom $494	Free Cancellation	Rating 6.8 7,992 reviews	Search Lufthansa 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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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.

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Icelandair flights from State of Washington to Brussels

Our best Icelandair deals on State of Washington to Brussels flight tickets

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

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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 from Washington to Brussels?

What is the cheapest airline that flies 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

Frequently asked questions about flying from Washington 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?

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

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