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$189+ Cheap flights from Washington to Belgium

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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 May 1, 2025.

Round-trip from

$501
(FlightHub)

One-way from

$198
(CrystalTravel)

Popular in

June

Cheapest in

February

Average price

$656
From Washington to Belgium
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One-way flight from Washington to Belgium
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Highest demand for flights based on searches. 17% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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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 May 1, 2025.

This oojo deal was found by Cheapflights users on 4/29. 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.
Thu 9/113:45 pmSEA - BRU
1 stop12h 05mIcelandair
Thu 9/181:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 4/29$475
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/314:00 pmSEA - BRU
2 stops19h 35mScandinavian Airlines
Sun 9/79:20 pmBRU - SEA
2 stops25h 30mScandinavian Airlines
Deal found 4/29$480
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/191:30 pmSEA - BRU
1 stop21h 55mAmerican Airlines
Mon 9/13:00 pmBRU - SEA
1 stop29h 10mAmerican Airlines
Deal found 4/30$505
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Wed 9/312:10 pmSEA - BRU
2 stops16h 05mMultiple Airlines
Tue 9/309:40 amBRU - SEA
2 stops21h 36mMultiple Airlines
Deal found 4/28$547
This Gotogate deal was found by Cheapflights users on 4/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/195:30 amSEA - BRU
2 stops17h 35mAir Canada
Tue 6/310:00 amBRU - SEA
1 stop18h 37mAir Canada
Deal found 4/30$571
This oojo deal was found by Cheapflights users on 4/30. 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.
Wed 9/173:13 pmSEA - BRU
2 stops20h 12mBritish Airways
Tue 9/238:25 pmBRU - SEA
2 stops32h 39mBritish Airways
Deal found 4/30$589
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1612:40 amSEA - BRU
2 stops23h 00mDelta
Wed 9/2410:45 amBRU - SEA
1 stop20h 40mDelta
Deal found 4/30$619
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/227:20 amSEA - BRU
2 stops40h 30mUnited Airlines
Tue 9/910:00 amBRU - SEA
2 stops17h 49mUnited Airlines
Deal found 4/28$629
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:00 pmPDX - BRU
2 stops21h 50mScandinavian Airlines
Tue 10/710:20 amBRU - PDX
2 stops21h 00mScandinavian Airlines
Deal found 4/29$649
This oojo deal was found by Cheapflights users on 4/29. 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.
Sun 9/73:20 pmPDX - BRU
1 stop12h 30mIcelandair
Sat 9/201:50 pmBRU - PDX
1 stop13h 05mIcelandair
Deal found 4/29$652
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:25 pmPDX - BRU
1 stop15h 10mAmerican Airlines
Fri 10/2410:45 amBRU - PDX
1 stop15h 50mAmerican Airlines
Deal found 4/30$654
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:59 pmSEA - BRU
1 stop24h 41mVirgin Atlantic
Thu 5/2910:45 amBRU - SEA
1 stop18h 38mVirgin Atlantic
Deal found 4/29$659

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 May 1, 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

Tue 6/3

7:00 pm-12:50 pm

1 stop32h 50m

Brussels Bruxelles-National

Tue 6/10

1:50 pm-8:40 pm

1 stop15h 50m

$545

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 5/19

5:30 am-8:05 am

2 stops17h 35m

Brussels Bruxelles-National

Tue 6/3

10:00 am-7:37 pm

1 stop18h 37m

$571

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 5/19

7:15 pm-8:05 am

2 stops27h 50m

Brussels Bruxelles-National

Tue 6/3

10:00 am-10:13 pm

2 stops21h 13m

$572

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 5/6

11:20 am-2:25 pm

2 stops18h 05m

Brussels Bruxelles-National

Fri 5/30

10:45 am-11:01 pm

2 stops21h 16m

$641

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 5/4

7:20 am-9:45 am

2 stops17h 25m

Brussels Bruxelles-National

Fri 5/30

9:40 am-11:32 am

2 stops34h 52m

$648

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 9/23

1:00 pm-7:50 pm

2 stops21h 50m

Brussels Bruxelles-National

Tue 10/7

10:20 am-10:20 pm

2 stops21h 00m

$649

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Sun 9/7

3:20 pm-12:50 pm

1 stop12h 30m

Brussels Bruxelles-National

Sat 9/20

1:50 pm-5:55 pm

1 stop13h 05m

$652

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 10/13

7:25 pm-7:35 pm

1 stop15h 10m

Brussels Bruxelles-National

Fri 10/24

10:45 am-5:35 pm

1 stop15h 50m

$654

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 10/13

6:15 am-8:05 am

2 stops16h 50m

Brussels Bruxelles-National

Tue 10/28

10:00 am-11:35 am

2 stops33h 35m

$701

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 5/3

10:59 pm-8:40 am

1 stop24h 41m

Brussels Bruxelles-National

Sat 5/10

10:45 am-10:43 pm

1 stop20h 58m

$719

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 41 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, November is the cheapest month in which you can book a flight from State of Washington to Belgium (average of $614). Flying from State of Washington to Belgium in June is currently the most expensive (average of $1,127). 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 May 1, 2025.

When flying from State of Washington to Belgium, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Belgium by month

Plan your trip to Belgium by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Belgium ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Belgium when rainfall is around 1.6 in.

Temperature in Belgium by month

Plan your trip to Belgium by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Belgium, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

Reviews of airlines servicing Belgium

Get insights into the airlines that provide service to Belgium. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Belgium. Reviews last updated May 1, 2025.
To help decide which airline to fly from Washington to Belgium, see what other customers have to say about Delta, KLM and Austrian Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
781 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 Icelandair ($198), United Airlines ($385), and Air Canada ($386).

  • 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, November is the cheapest month in which you can book a flight from State of Washington to Belgium (average of $614). Flying from State of Washington to Belgium in June is currently the most expensive (average of $1,127). 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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Alternative routes for Washington to Belgium

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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$537FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$495Average$670FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$583FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$529Average$665FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$544FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$532Average$679FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$543Average$724FlexibilityNo cancel feeOn-time67%
DeltaCheapest$549Average$772FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$554Average$731FlexibilityNo cancel feeOn-time77%
FinnairCheapest$572Average$787FlexibilityNo cancel feeOn-time76%

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