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$374+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Round-trip from

$444
(oojo)

One-way from

$374
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$527
From Washington to Belgium
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One-way flight from Washington to Belgium
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($183 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This oojo deal was found by Cheapflights users on 2/20. 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.
Sat 9/1311:30 pmSEA - BRU
1 stop28h 20mIcelandair
Thu 10/21:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 2/20$461
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:45 pmSEA - BRU
1 stop16h 55mAer Lingus
Wed 4/910:20 amBRU - SEA
1 stop15h 39mAer Lingus
Deal found 2/19$480
This Flightnetwork deal was found by Cheapflights users on 2/20. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/612:20 pmSEA - BRU
2 stops34h 45mAir Canada
Fri 11/710:00 amBRU - SEA
2 stops32h 50mAir Canada
Deal found 2/20$497
This StudentUniverse deal was found by Cheapflights users on 2/20. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/251:56 pmSEA - BRU
2 stops20h 29mFinnair
Thu 4/311:40 amBRU - SEA
2 stops20h 27mFinnair
Deal found 2/20$515
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/21:25 pmSEA - BRU
2 stops16h 55mBritish Airways
Wed 4/910:55 amBRU - SEA
1 stop16h 25mBritish Airways
Deal found 2/20$520
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Tue 3/255:55 amSEA - BRU
2 stops42h 00mMultiple Airlines
Thu 4/37:00 amBRU - SEA
1 stop14h 25mMultiple Airlines
Deal found 2/20$523
This Flighttix deal was found by Cheapflights users on 2/20. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/210:50 amSEA - BRU
1 stop13h 10mBrussels Airlines
Wed 4/99:40 amBRU - SEA
1 stop20h 46mBrussels Airlines
Deal found 2/20$528
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/26:50 pmSEA - BRU
1 stop16h 00mLufthansa
Wed 4/96:45 amBRU - SEA
1 stop19h 14mLufthansa
Deal found 2/20$531
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 4/210:50 amSEA - BRU
1 stop13h 10mUnited Airlines
Wed 4/99:40 amBRU - SEA
1 stop20h 46mUnited Airlines
Deal found 2/20$533
This Delta deal was found by Cheapflights users on 2/20. 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.
Sat 3/810:55 pmSEA - BRU
2 stops25h 05mDelta
Tue 3/1811:00 amBRU - SEA
1 stop19h 25mDelta
Deal found 2/20$546
This KLM deal was found by Cheapflights users on 2/20. 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.
Wed 3/52:10 pmSEA - BRU
1 stop15h 05mKLM
Mon 3/172:45 pmBRU - SEA
1 stop29h 55mKLM
Deal found 2/20$557
This United deal was found by Cheapflights users on 2/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/126:00 amPDX - BRU
2 stops17h 55mUnited Airlines
Tue 3/1810:00 amBRU - PDX
2 stops40h 48mUnited Airlines
Deal found 2/20$622

Find flights from Washington to Belgium within your budget

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 February 20, 2025.

Fly from

Washington

Fly to

Belgium

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 5/6

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Mon 5/19

1:50 pm-8:40 pm

1 stop15h 50m

$466

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

6:45 pm-8:40 pm

1 stop16h 55m

Brussels Bruxelles-National

Wed 4/9

10:20 am-4:59 pm

1 stop15h 39m

$480

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

5:45 am-8:05 am

2 stops17h 20m

Brussels Bruxelles-National

Wed 4/9

9:40 am-9:26 pm

1 stop20h 46m

$499

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 3/25

1:56 pm-6:25 pm

2 stops20h 29m

Brussels Bruxelles-National

Thu 4/3

11:40 am-11:07 pm

2 stops20h 27m

$515

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

1:25 pm-3:20 pm

2 stops16h 55m

Brussels Bruxelles-National

Wed 4/9

10:55 am-6:20 pm

1 stop16h 25m

$520

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 3/25

5:55 am-7:55 am

2 stops42h 00m

Brussels Bruxelles-National

Thu 4/3

7:00 am-12:25 pm

1 stop14h 25m

$523

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

10:50 am-9:00 am

1 stop13h 10m

Brussels Bruxelles-National

Wed 4/9

9:40 am-9:26 pm

1 stop20h 46m

$528

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

6:50 pm-7:50 pm

1 stop16h 00m

Brussels Bruxelles-National

Wed 4/9

6:45 am-4:59 pm

1 stop19h 14m

$531

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/2

10:50 am-9:00 am

1 stop13h 10m

Brussels Bruxelles-National

Wed 4/9

9:40 am-9:26 pm

1 stop20h 46m

$533

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 3/8

11:05 pm-9:00 am

2 stops24h 55m

Brussels Bruxelles-National

Tue 3/18

11:00 am-10:42 am

2 stops31h 42m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 40 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.

Travel insights for flights from Washington to Belgium

Get recent, data-driven insights about flights from Washington to Belgium including ideal travel times, pricing trends, and more.

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 $1,146). 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 February 20, 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 February 20, 2025.
To help decide which airline to fly from Washington to Belgium, see what other customers have to say about Delta, KLM and Finnair. 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
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,273 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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
1,568 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

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 TAP AIR PORTUGAL ($406), Virgin Atlantic ($424), and Air Canada ($471).

  • 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 $1,146). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$568FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$501Average$690FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$637FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$526Average$698FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$529Average$634FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$676FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$535Average$718FlexibilityNo cancel feeOn-time75%
DeltaCheapest$561Average$864FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$565Average$851FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$580Average$741FlexibilityNo cancel feeOn-time76%
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