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$388+ Cheap flights from Washington to Belgium

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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Find flight deals from Washington to Belgium

Cheapest flights from Washington to Belgium
Explore the most affordable flight options available from Washington to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:35 pmSEA - BRU
1 stop12h 20mIcelandair
jue. 11/2712:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 10/28$388
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/272:35 pmSEA - BRU
1 stop12h 20mIcelandair
jue. 12/412:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 10/30$389
This FlightHub deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/82:45 pmPDX - BRU
1 stop12h 10mIcelandair
vie. 11/1412:50 pmBRU - PDX
1 stop13h 10mIcelandair
Deal found 10/30$443
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:35 pmSEA - BRU
2 stops18h 20mMultiple Airlines
jue. 11/279:25 amBRU - SEA
2 stops16h 35mMultiple Airlines
Deal found 10/28$472
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/105:50 amSEA - BRU
2 stops17h 00mMultiple Airlines
mié. 12/176:45 amBRU - SEA
1 stop15h 35mMultiple Airlines
Deal found 10/28$474
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/275:50 amSEA - BRU
2 stops17h 00mMultiple Airlines
jue. 12/47:00 amBRU - SEA
1 stop14h 10mMultiple Airlines
Deal found 10/30$481
This Air Canada deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/253:40 pmSEA - BRU
2 stops19h 20mMultiple Airlines
mié. 2/2510:00 amBRU - SEA
2 stops18h 16mMultiple Airlines
Deal found 10/27$489
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/253:40 pmSEA - BRU
2 stops32h 15mMultiple Airlines
mar. 12/21:50 pmBRU - SEA
1 stop32h 30mMultiple Airlines
Deal found 10/27$492
This FlightHub deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/53:15 pmPDX - BRU
2 stops55h 35mAir Canada
lun. 1/1210:00 amBRU - PDX
2 stops32h 15mAir Canada
Deal found 10/30$493
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/258:00 amSEA - BRU
1 stop14h 15mUnited Airlines
mié. 2/256:45 amBRU - SEA
1 stop15h 35mUnited Airlines
Deal found 10/27$506
This Air Canada deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/55:00 amPDX - BRU
2 stops17h 50mMultiple Airlines
lun. 1/122:25 pmBRU - PDX
3 stops27h 50mMultiple Airlines
Deal found 10/30$509
This KLM deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/57:05 amPDX - BRU
1 stop16h 55mKLM
lun. 1/1210:45 amBRU - PDX
2 stops18h 42mKLM
Deal found 10/30$517

Cheap flight deals from Washington to Belgium

Keep the following information in mind while searching for Washington to Belgium flight deals. Data was last updated octubre 30, 2025.

Round-trip from

$382
(CrystalTravel)

Popular in

June

Cheapest in

October

Average price

$517
From Washington to Belgium
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Belgium that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 30, 2025.
Use the filters below to find and compare flights from Washington to Belgium that are best for you.

Fly from

Washington

Fly to

Belgium

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

jue. 4/23

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

jue. 5/7

1:50 pm-8:45 pm

1 stop15h 55m

$423

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mar. 2/10

12:25 pm-1:15 pm

2 stops15h 50m

Brussels Bruxelles-National

mar. 3/10

10:00 am-11:49 am

2 stops33h 49m

$481

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 4/22

3:40 pm-8:00 pm

2 stops19h 20m

Brussels Bruxelles-National

mar. 5/5

10:00 am-7:41 pm

1 stop18h 41m

$489

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 4/22

3:40 pm-8:00 pm

2 stops19h 20m

Brussels Bruxelles-National

jue. 5/7

10:00 am-7:41 pm

1 stop18h 41m

$489

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

sáb. 4/25

2:15 pm-9:00 am

1 stop33h 45m

Brussels Bruxelles-National

mar. 5/5

9:40 am-11:15 am

1 stop34h 35m

$492

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

dom. 4/26

11:50 pm-9:00 am

1 stop24h 10m

Brussels Bruxelles-National

mar. 5/5

9:40 am-11:15 am

1 stop34h 35m

$492

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 4/1

12:46 pm-1:15 pm

2 stops15h 29m

Brussels Bruxelles-National

mié. 4/8

10:00 am-9:33 am

2 stops32h 33m

$494

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

lun. 4/27

8:00 am-7:15 am

1 stop14h 15m

Brussels Bruxelles-National

mié. 5/6

10:00 am-7:41 pm

1 stop18h 41m

$497

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

lun. 4/27

7:00 am-9:00 am

1 stop17h 00m

Brussels Bruxelles-National

jue. 5/7

10:00 am-7:41 pm

1 stop18h 41m

$497

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

lun. 4/27

7:00 am-9:00 am

1 stop17h 00m

Brussels Bruxelles-National

mar. 5/5

10:00 am-7:41 pm

1 stop18h 41m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 47 results
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Best time to book a flight from Washington to Belgium

Have a flexible travel schedule? Discover the best time to fly to Belgium from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Belgium

What is the cheapest month to book a flight from State of Washington to Belgium?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Belgium (average of $380). Flying from State of Washington to Belgium in July is currently the most expensive (average of $508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to BE?

Find hourly flight availability from Washington to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 30, 2025.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Belgium in the afternoon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from State of Washington to Belgium?

Use this chart to determine the cheapest time to fly round-trip from Washington to Belgium. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Belgium flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to Belgium. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Belgium?

    A quick flight from State of Washington to Belgium can take about 12h 05m. Icelandair provides one of the quickest options available for as low as $423. State of Washington and Belgium are separated by a distance of 4941 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Belgium one-way?

    The cheapest airlines for a one-way flight from State of Washington to Belgium are Scandinavian Airlines ($389), Icelandair ($397), and Brussels Airlines ($424).

  • Can I find deals for flights from Washington to Belgium that include hotel bookings?

    Yes. In addition to deals on Washington to Belgium flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Belgium?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Belgium.

  • Can I find deals for business class flights from Washington to Belgium?

    Yes. Cheapflights offers flight deals from Washington to Belgium by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Belgium?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Belgium (average of $380). Flying from State of Washington to Belgium in July is currently the most expensive (average of $508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Belgium

Discover the top 10 airlines that operate flights from Washington to Belgium. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$391Average$495FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$483Average$741FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$488Average$491FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$501Average$733FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$506Average$607FlexibilityNo cancel feeOn-time77%
KLMCheapest$511Average$686FlexibilityNo cancel feeOn-time75%
DeltaCheapest$514Average$733FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$532Average$556FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$556Average$740FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$561Average$718FlexibilityNo cancel feeOn-time76%

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