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

Icelandair, British Airways, and United Airlines are the most popular carriers operating from Washington to Belgium

What airlines fly to Belgium?

Icelandair, KLM and Lufthansa are the top three most popular airlines that fly to Belgium from State of Washington according to our data. Icelandair is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Belgium. Keep in mind that there are 8 different airlines that fly to Belgium 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 Belgium?

Prices for flights from Washington to Belgium are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Belgium?

The number of operators available for flights from Washington to Belgium is 8 as of March 2026.

How old do you have to be to fly from Washington to Belgium?

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 Belgium.

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

The necessary travel and health documents for your Belgium trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$263 Cheap Flights from Washington to Belgium in 2026

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Find the cheapest flights from Washington to Belgium

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 pm - 9:30 pm

SEA

CRL

17h 30m

2 stops

7:05 am - 8:40 pm

CRL

SEA

22h 35m

2 stops

$506Multiple Airlines

Thu, Apr 16 - Thu, Apr 23

3:40 pm - 12:55 pm

SEA

BRU

12h 15m

1 stop

1:50 pm - 8:40 pm

BRU

SEA

15h 50m

1 stop

$536Icelandair

Thu, Apr 16 - Thu, Apr 23

7:00 pm - 12:55 pm

SEA

BRU

32h 55m

1 stop

1:50 pm - 5:55 pm

BRU

SEA

13h 05m

1 stop

$567Icelandair

Sat, Apr 18 - Fri, May 1

7:00 pm - 12:55 pm

SEA

BRU

32h 55m

1 stop

1:50 pm - 5:55 pm

BRU

SEA

13h 05m

1 stop

$570Icelandair

Sat, Apr 18 - Fri, May 1

3:40 pm - 12:55 pm

SEA

BRU

12h 15m

1 stop

1:50 pm - 5:55 pm

BRU

SEA

13h 05m

1 stop

$571Icelandair

Thu, Apr 16 - Wed, May 6

3:30 pm - 9:30 pm

PDX

CRL

21h 00m

2 stops

9:50 am - 7:05 pm

CRL

PDX

42h 15m

3 stops

$707Multiple Airlines

Thu, Apr 16 - Fri, May 1

1:14 pm - 9:30 pm

PDX

BRU

23h 16m

2 stops

6:55 am - 7:06 pm

BRU

PDX

21h 11m

2 stops

$727SWISS

Tue, Sep 1 - Tue, Sep 22

7:00 am - 8:50 am

PDX

BRU

16h 50m

2 stops

6:55 am - 11:09 pm

BRU

PDX

25h 14m

2 stops

$736SWISS

Wed, Sep 2 - Fri, Sep 11

7:00 am - 9:00 am

PDX

BRU

17h 00m

1 stop

9:25 am - 12:47 am

BRU

PDX

24h 22m

2 stops

$750United Airlines

Tue, Sep 1 - Tue, Sep 22

10:35 am - 1:15 pm

PDX

BRU

17h 40m

2 stops

12:00 pm - 8:20 pm

BRU

PDX

17h 20m

1 stop

$752United Airlines

Wed, Sep 2 - Fri, Sep 11

Lufthansa flights from State of Washington to Belgium

Our best Lufthansa deals on State of Washington to Belgium flight tickets

Lufthansa

Apr 19

SEA6:50 pmSeattle/Tacoma Intl

16h 05m

1 stop

BRU7:55 pmBrussels Bruxelles-National

Apr 26

BRU9:35 amBrussels Bruxelles-National

16h 24m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$650

Lufthansa

Apr 19

SEA2:10 pmSeattle/Tacoma Intl

14h 30m

1 stop

BRU1:40 pmBrussels Bruxelles-National

May 3

BRU9:35 amBrussels Bruxelles-National

16h 24m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$653

Lufthansa

Apr 19

SEA2:10 pmSeattle/Tacoma Intl

13h 35m

1 stop

BRU12:45 pmBrussels Bruxelles-National

May 3

BRU12:45 pmBrussels Bruxelles-National

13h 14m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$656

United Airlines flights from State of Washington to Belgium

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

United Airlines

Apr 21

SEA3:45 pmSeattle/Tacoma Intl

19h 15m

2 stops

BRU8:00 pmBrussels Bruxelles-National

May 1

BRU7:00 amBrussels Bruxelles-National

14h 20m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

$666

United Airlines

Apr 18

SEA11:59 pmSeattle/Tacoma Intl

28h 16m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Apr 30

BRU8:30 amBrussels Bruxelles-National

12h 50m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

$670

United Airlines

Apr 19

SEA3:40 pmSeattle/Tacoma Intl

19h 20m

2 stops

BRU8:00 pmBrussels Bruxelles-National

May 3

BRU7:00 amBrussels Bruxelles-National

24h 40m

2 stops

SEA10:40 pmSeattle/Tacoma Intl

$672

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrussels

SEA - CRL

SEACRL

Seattle/Tacoma Intl

Thu 4/16

7:00 pm-9:30 pm

2 stops17h 30m

Charleroi Brussels

Thu 4/23

7:05 am-8:40 pm

2 stops22h 35m

$506

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 4/16

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Thu 4/23

1:50 pm-8:40 pm

1 stop15h 50m

$536

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 5/1

1:50 pm-5:55 pm

1 stop13h 05m

$567

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 4/18

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 5/1

1:50 pm-5:55 pm

1 stop13h 05m

$570

Quickest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 4/16

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Wed 5/6

1:50 pm-5:55 pm

1 stop13h 05m

$571

PortlandBrussels

PDX - CRL

PDXCRL

Portland

Thu 4/16

3:30 pm-9:30 pm

2 stops21h 00m

Charleroi Brussels

Fri 5/1

9:50 am-7:05 pm

3 stops42h 15m

$707

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 9/1

1:14 pm-9:30 pm

2 stops23h 16m

Brussels Bruxelles-National

Tue 9/22

6:55 am-7:06 pm

2 stops21h 11m

$727

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/2

7:00 am-8:50 am

2 stops16h 50m

Brussels Bruxelles-National

Fri 9/11

6:55 am-11:09 pm

2 stops25h 14m

$736

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 9/1

7:00 am-9:00 am

1 stop17h 00m

Brussels Bruxelles-National

Tue 9/22

9:25 am-12:47 am

2 stops24h 22m

$750

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/2

10:35 am-1:15 pm

2 stops17h 40m

Brussels Bruxelles-National

Fri 9/11

12:00 pm-8:20 pm

1 stop17h 20m

$752

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 Belgium

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 Belgium?

In general, October is the cheapest month to fly from State of Washington to Belgium. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $463. If you are unable to visit Belgium during the month of October, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around $510.

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

You are more likely to see cheaper flights to Belgium from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Belgium for around $610 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Belgium from State of Washington for as low as $533 on momondo.

Can stopping save me money on State of Washington to Belgium flights?

You could potentially save up to 18% on your flight if you consider stops on a State of Washington to Belgium flight.

Cheap State of Washington to Belgium flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Belgium

Fastest flight time	12h 15m
Direct flights	None

The fastest flight from State of Washington to Belgium takes 12h 15m

There are no direct flights from State of Washington to Belgium. There are no popular flight routes from State of Washington to Belgium.

Search flight deals

When did momondo last update prices for flights from Washington to Belgium?
Prices for flights from Washington to Belgium are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Belgium?
The number of operators available for flights from Washington to Belgium is 8 as of March 2026.
How old do you have to be to fly from Washington to Belgium?
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 Belgium.
What documentation or ID do you need to fly to Belgium?
The necessary travel and health documents for your Belgium trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Belgium

Compare and see reviews for airlines that fly from State of Washington to Belgium with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $383	Free Cancellation	Rating 7.0 625 reviews	Search Icelandair flights
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 7,817 reviews	Search British Airways flights
United Airlines	PriceFrom $470	Free Cancellation	Rating 7.4 9,475 reviews	Search United Airlines flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
Delta	PriceFrom $482	Free Cancellation	Rating 7.9 8,326 reviews	Search Delta flights
Virgin Atlantic	PriceFrom $488	Free Cancellation	Rating 7.5 685 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom $494	Free Cancellation	Rating 6.8 7,867 reviews	Search Lufthansa flights
Air Canada	PriceFrom $518	Free Cancellation	Rating 7.1 10,837 reviews	Search Air Canada flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Belgium. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Belgium from Washington which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Washington to Belgium flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Belgium from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Belgium trip

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Flights to Brusselsfrom $451

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Cheap flights from Washington to Belgium from $263

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 Belgium departing on 4/18. 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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Lufthansa flights from State of Washington to Belgium

Our best Lufthansa deals on State of Washington to Belgium flight tickets

United Airlines flights from State of Washington to Belgium

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

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

What is the cheapest month to fly to Belgium?

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

Can stopping save me money on State of Washington to Belgium flights?

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

What airlines fly to Belgium?

Cheap State of Washington to Belgium flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Belgium

Fastest flight time

Direct flights

Best airlines flying from State of Washington to Belgium

Compare and see reviews for airlines that fly from State of Washington to Belgium with momondo

Why use momondo?

An easier way to manage your Belgium 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

Popular cities in Belgium

Popular flights according to clicks in the last 7 days on momondo

State of Washington flight routes

According to popular flight searches on momondo this year

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List of cabin classes available on flights landing in Belgium. Availability may vary depending on flight origin and airline.

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According to popular flight searches on momondo this year