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

Icelandair 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 34% of people opting to fly with this airline when traveling to Belgium. Keep in mind that there are 6 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 6 as of June 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.

$232 Cheap Flights from Washington to Belgium in 2026

Discover deals from 900+ travel sites with momondo.

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.

3:40 pm - 12:55 pm

SEA

BRU

12h 15m

1 stop

1:50 pm - 11:45 am

BRU

SEA

30h 55m

1 stop

$561Icelandair

Mon, Aug 3 - Wed, Aug 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

$565Icelandair

Sun, Oct 18 - Thu, Oct 29

11:25 pm - 12:55 pm

SEA

BRU

28h 30m

1 stop

1:50 pm - 8:40 pm

BRU

SEA

15h 50m

1 stop

$566Icelandair

Mon, Aug 17 - Mon, Aug 31

3:40 pm - 10:55 pm

SEA

CRL

22h 15m

3 stops

9:15 pm - 9:07 pm

CRL

SEA

32h 52m

3 stops

$666Multiple Airlines

Sun, Aug 23 - Mon, Aug 31

3:40 pm - 9:15 pm

SEA

CRL

20h 35m

2 stops

6:55 am - 9:40 am

CRL

SEA

35h 45m

3 stops

$699Multiple Airlines

Sun, Aug 30 - Tue, Sep 15

11:17 pm - 1:15 pm

PDX

BRU

28h 58m

2 stops

11:10 am - 10:03 pm

BRU

PDX

19h 53m

1 stop

$736United Airlines

Thu, Sep 17 - Sun, Sep 20

10:00 am - 8:00 pm

PDX

BRU

25h 00m

2 stops

10:00 am - 8:46 pm

BRU

PDX

19h 46m

2 stops

$757Air Canada

Sun, Nov 8 - Thu, Nov 12

1:15 pm - 1:15 pm

PDX

BRU

15h 00m

2 stops

11:55 am - 8:28 pm

BRU

PDX

17h 33m

1 stop

$768United Airlines

Sun, Nov 8 - Thu, Nov 12

1:03 pm - 9:30 pm

PDX

BRU

23h 27m

2 stops

6:55 am - 7:06 pm

BRU

PDX

21h 11m

2 stops

$771SWISS

Wed, Sep 30 - Wed, Oct 21

10:10 am - 2:15 pm

PDX

BRU

19h 05m

2 stops

9:10 am - 6:51 pm

BRU

PDX

42h 41m

2 stops

$790Air Canada

Wed, Sep 30 - Wed, Oct 21

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Icelandair flights from State of Washington to Belgium

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

Icelandair

Aug 3

SEA3:40 pmSeattle/Tacoma Intl

12h 15m

1 stop

BRU12:55 pmBrussels Bruxelles-National

Aug 19

BRU1:50 pmBrussels Bruxelles-National

30h 55m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$561

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

$565

Icelandair

Aug 17

SEA11:25 pmSeattle/Tacoma Intl

28h 30m

1 stop

BRU12:55 pmBrussels Bruxelles-National

Aug 31

BRU1:50 pmBrussels Bruxelles-National

15h 50m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

$566

United Airlines flights from State of Washington to Belgium

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

United Airlines

Nov 18

SEA7:45 amSeattle/Tacoma Intl

20h 30m

2 stops

BRU1:15 pmBrussels Bruxelles-National

Nov 24

BRU10:10 amBrussels Bruxelles-National

17h 38m

1 stop

SEA6:48 pmSeattle/Tacoma Intl

$720

United Airlines

Nov 15

SEA7:00 amSeattle/Tacoma Intl

16h 55m

1 stop

BRU8:55 amBrussels Bruxelles-National

Nov 22

BRU10:10 amBrussels Bruxelles-National

21h 43m

1 stop

SEA10:53 pmSeattle/Tacoma Intl

$723

United Airlines

Nov 19

SEA10:52 amSeattle/Tacoma Intl

13h 03m

1 stop

BRU8:55 amBrussels Bruxelles-National

Nov 23

BRU10:10 amBrussels Bruxelles-National

17h 38m

1 stop

SEA6:48 pmSeattle/Tacoma Intl

$728

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 8/3

3:40 pm-12:55 pm

1 stop12h 15m

Brussels Bruxelles-National

Wed 8/19

1:50 pm-11:45 am

1 stop30h 55m

$561

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

$565

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 8/17

11:25 pm-12:55 pm

1 stop28h 30m

Brussels Bruxelles-National

Mon 8/31

1:50 pm-8:40 pm

1 stop15h 50m

$566

SeattleBrussels

SEA - CRL

SEACRL

Seattle/Tacoma Intl

Sun 8/23

3:40 pm-10:55 pm

3 stops22h 15m

Charleroi Brussels

Mon 8/31

9:15 pm-9:07 pm

3 stops32h 52m

$666

SeattleBrussels

SEA - CRL

SEACRL

Seattle/Tacoma Intl

Sun 8/30

3:40 pm-9:15 pm

2 stops20h 35m

Charleroi Brussels

Tue 9/15

6:55 am-9:40 am

3 stops35h 45m

$699

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Thu 9/17

11:17 pm-1:15 pm

2 stops28h 58m

Brussels Bruxelles-National

Sun 9/20

11:10 am-10:03 pm

1 stop19h 53m

$736

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/8

10:00 am-8:00 pm

2 stops25h 00m

Brussels Bruxelles-National

Thu 11/12

10:00 am-8:46 pm

2 stops19h 46m

$757

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 11/8

1:15 pm-1:15 pm

2 stops15h 00m

Brussels Bruxelles-National

Thu 11/12

11:55 am-8:28 pm

1 stop17h 33m

$768

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/30

1:03 pm-9:30 pm

2 stops23h 27m

Brussels Bruxelles-National

Wed 10/21

6:55 am-7:06 pm

2 stops21h 11m

$771

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 9/30

10:10 am-2:15 pm

2 stops19h 05m

Brussels Bruxelles-National

Wed 10/21

9:10 am-6:51 pm

2 stops42h 41m

$790

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, January 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 $375. If you are unable to visit Belgium during the month of January, then departing from State of Washington during the month April is also very affordable. Most momondo users find prices during this month for around $380.

How far in advance should I book a flight from Washington 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 $658 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 $503 on momondo.

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

You could potentially save up to 8% 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

Frequently asked questions about flying from Washington to Belgium

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 6 as of June 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 7.0 690 reviews	Search Icelandair flights
British Airways	PriceFrom $421	Free Cancellation	Rating 6.7 8,071 reviews	Search British Airways flights
United Airlines	PriceFrom $470	Free Cancellation	Rating 7.4 9,893 reviews	Search United Airlines flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,531 reviews	Search KLM flights
Delta	PriceFrom $482	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights
Lufthansa	PriceFrom $494	Free Cancellation	Rating 6.8 8,096 reviews	Search Lufthansa 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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Popular cities in Belgium

Flights to Brusselsfrom $547

Flights to Ostend

Cheap flights from Washington to Belgium from $232

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 7/20. 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 Belgium

Our best Icelandair 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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See travel insights to Belgium from

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 from Washington 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

Frequently asked questions about flying from Washington to Belgium

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

Belgium flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Belgium

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

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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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Explore popular destinations other users love

According to popular flight searches on momondo this year