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 42% of people opting to fly with this airline when traveling to Belgium. Keep in mind that there are 9 different airlines that fly to Belgium on a routine basis, so you have a few additional options to choose from.

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

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 9 as of February 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.

$219 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.

2:35 pm - 11:55 am

SEA

BRU

12h 20m

1 stop

12:50 pm - 6:00 pm

BRU

SEA

13h 10m

1 stop

$411Icelandair

Thu, Mar 5 - Thu, Mar 19

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

7:00 pm - 12:55 pm

SEA

BRU

32h 55m

1 stop

1:50 pm - 5:55 pm

BRU

SEA

13h 05m

1 stop

$461Icelandair

Mon, May 4 - Mon, May 11

3:30 pm - 12:55 pm

PDX

BRU

12h 25m

1 stop

1:50 pm - 6:00 pm

BRU

PDX

13h 10m

1 stop

$461Icelandair

Thu, Apr 2 - Fri, Apr 17

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

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

3:40 pm - 4:15 pm

SEA

BRU

15h 35m

2 stops

9:25 am - 10:50 pm

BRU

SEA

22h 25m

2 stops

$476Multiple Airlines

Tue, Apr 7 - Tue, Apr 21

3:48 pm - 8:00 pm

SEA

BRU

19h 12m

2 stops

9:25 am - 4:37 pm

BRU

SEA

40h 12m

2 stops

$485United Airlines

Wed, Apr 8 - Tue, Apr 21

7:15 am - 1:15 pm

SEA

BRU

21h 00m

2 stops

10:00 am - 7:03 pm

BRU

SEA

41h 03m

2 stops

$486United Airlines

Fri, Mar 6 - Fri, Mar 13

3:10 pm - 1:10 pm

SEA

BRU

13h 00m

1 stop

9:05 am - 2:20 pm

BRU

SEA

13h 15m

1 stop

$487Lufthansa

Wed, Mar 4 - Wed, Mar 11

Icelandair flights from State of Washington to Belgium

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

Icelandair

Mar 5

SEA2:35 pmSeattle/Tacoma Intl

12h 20m

1 stop

BRU11:55 amBrussels Bruxelles-National

Mar 19

BRU12:50 pmBrussels Bruxelles-National

13h 10m

1 stop

SEA6:00 pmSeattle/Tacoma Intl

$411

Icelandair

Mar 25

SEA3:35 pmSeattle/Tacoma Intl

12h 20m

1 stop

BRU11:55 amBrussels Bruxelles-National

Mar 30

BRU1:50 pmBrussels Bruxelles-National

15h 50m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

$447

Icelandair

Apr 2

PDX3:30 pmPortland

12h 25m

1 stop

BRU12:55 pmBrussels Bruxelles-National

Apr 17

BRU1:50 pmBrussels Bruxelles-National

13h 10m

1 stop

PDX6:00 pmPortland

$461

British Airways flights from State of Washington to Belgium

Our best British Airways deals on State of Washington to Belgium flight tickets

British Airways

Apr 30

SEA1:35 pmSeattle/Tacoma Intl

17h 35m

1 stop

BRU4:10 pmBrussels Bruxelles-National

May 5

BRU10:55 amBrussels Bruxelles-National

33h 40m

1 stop

SEA11:35 amSeattle/Tacoma Intl

$508

British Airways

Mar 9

PDX6:45 pmPortland

32h 05m

1 stop

BRU10:50 amBrussels Bruxelles-National

Mar 23

BRU11:50 amBrussels Bruxelles-National

13h 05m

1 stop

PDX4:55 pmPortland

$512

British Airways

Mar 5

SEA6:50 pmSeattle/Tacoma Intl

13h 15m

1 stop

BRU5:05 pmBrussels Bruxelles-National

Mar 10

BRU12:00 pmBrussels Bruxelles-National

13h 55m

1 stop

SEA5:55 pmSeattle/Tacoma Intl

$513

Fly from

Fly to

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 3/5

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 3/19

12:50 pm-6:00 pm

1 stop13h 10m

$411

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

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 5/4

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Mon 5/11

1:50 pm-5:55 pm

1 stop13h 05m

$461

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Thu 4/2

3:30 pm-12:55 pm

1 stop12h 25m

Brussels Bruxelles-National

Fri 4/17

1:50 pm-6:00 pm

1 stop13h 10m

$461

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

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

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

$476

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/8

3:48 pm-8:00 pm

2 stops19h 12m

Brussels Bruxelles-National

Tue 4/21

9:25 am-4:37 pm

2 stops40h 12m

$485

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 3/6

7:15 am-1:15 pm

2 stops21h 00m

Brussels Bruxelles-National

Fri 3/13

10:00 am-7:03 pm

2 stops41h 03m

$486

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-1:10 pm

1 stop13h 00m

Brussels Bruxelles-National

Wed 3/11

9:05 am-2:20 pm

1 stop13h 15m

$487

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 $476. If you are unable to visit Belgium 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 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 $614 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 $542 on momondo.

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

You could potentially save up to 9% 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 9 as of February 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 $385	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
British Airways	PriceFrom $436	Free Cancellation	Rating 6.7 7,716 reviews	Search British Airways flights
Delta	PriceFrom $482	Free Cancellation	Rating 7.9 8,158 reviews	Search Delta flights
United Airlines	PriceFrom $483	Free Cancellation	Rating 7.4 9,242 reviews	Search United Airlines flights
KLM	PriceFrom $486	Free Cancellation	Rating 7.7 1,449 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 7,762 reviews	Search Lufthansa flights
Air Canada	PriceFrom $518	Free Cancellation	Rating 7.1 10,696 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $536	Free Cancellation	Rating 7.2 1,445 reviews	Search Aer Lingus 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

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.

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Popular cities in Belgium

Flights to Brusselsfrom $342

Flights to Ostend

Cheap flights from Washington to Belgium from $219

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 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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Find the cheapest flights from Washington to Belgium

Cheap round-trip flights

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Icelandair flights from State of Washington to Belgium

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

British Airways flights from State of Washington to Belgium

Our best British Airways deals on State of Washington to Belgium flight tickets

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Use the filters below to find and compare flights from Washington to Belgium that are best for you.

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 to Belgium?

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

You could potentially save up to 9% on your flight if you consider stops on a State of Washington to Belgium flight.

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?

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

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

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

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

What documentation or ID do you need to fly 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?

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

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

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

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

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

Cabin classes currently available on flights to Belgium

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

Complete your trip to Belgium

Explore popular destinations other users love

According to popular flight searches on momondo this year