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$174+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$463
(oojo)

One-way from

$174
(oojo)

Popular in

June

Cheapest in

February

Average price

$605
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 ($180 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 2025.

This Gotogate deal was found by Cheapflights users on 3/31. 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.
Sun 4/273:45 pmSEA - BRU
1 stop12h 05mIcelandair
Sat 5/101:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 3/31$460
This CrystalTravel deal was found by Cheapflights users on 3/31. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/14:00 pmSEA - BRU
1 stop14h 20mScandinavian Airlines
Wed 6/1110:20 amBRU - SEA
1 stop12h 30mScandinavian Airlines
Deal found 3/31$482
This Finnair deal was found by Cheapflights users on 3/31. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:30 pmSEA - BRU
1 stop19h 15mMultiple Airlines
Tue 10/287:10 amBRU - SEA
2 stops22h 09mMultiple Airlines
Deal found 3/31$534
This StudentUniverse deal was found by Cheapflights users on 4/1. 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 10/79:50 amSEA - BRU
2 stops23h 30mFinnair
Wed 10/156:35 amBRU - SEA
2 stops21h 19mFinnair
Deal found 4/1$544
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 11/16:20 pmSEA - BRU
2 stops30h 35mUnited Airlines
Tue 11/1811:55 amBRU - SEA
2 stops19h 34mUnited Airlines
Deal found 3/31$547
This Air Canada deal was found by Cheapflights users on 4/1. 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.
Tue 10/77:20 amSEA - BRU
1 stop15h 45mAir Canada
Wed 10/1510:00 amBRU - SEA
1 stop18h 31mAir Canada
Deal found 4/1$548
This Iberia deal was found by Cheapflights users on 4/1. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:20 pmSEA - BRU
1 stop15h 05mBritish Airways
Wed 10/2911:50 amBRU - SEA
1 stop14h 05mBritish Airways
Deal found 4/1$553
This American Airlines deal was found by Cheapflights users on 4/1. 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 4/298:20 pmSEA - BRU
1 stop15h 05mAmerican Airlines
Tue 5/203:05 pmBRU - SEA
1 stop29h 30mAmerican Airlines
Deal found 4/1$576
This Delta deal was found by Cheapflights users on 4/1. 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 5/1011:50 pmSEA - BRU
2 stops22h 40mDelta
Tue 6/1010:45 amBRU - SEA
1 stop18h 33mDelta
Deal found 4/1$592
This Air France deal was found by Cheapflights users on 4/1. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/277:23 amSEA - BRU
1 stop16h 17mAir France
Sat 5/1010:45 amBRU - SEA
1 stop20h 58mAir France
Deal found 4/1$614
This FlightHub deal was found by Cheapflights users on 4/2. 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.
Mon 9/13:20 pmPDX - BRU
1 stop12h 30mIcelandair
Tue 9/161:50 pmBRU - PDX
1 stop13h 05mIcelandair
Deal found 4/2$627
This Lufthansa deal was found by Cheapflights users on 4/1. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3012:46 pmSEA - BRU
2 stops22h 04mLufthansa
Tue 5/137:00 amBRU - SEA
2 stops24h 13mLufthansa
Deal found 4/1$634

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 April 2, 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

Sun 4/27

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Sat 5/10

1:50 pm-8:40 pm

1 stop15h 50m

$460

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 6/1

4:00 pm-3:20 pm

1 stop14h 20m

Brussels Bruxelles-National

Wed 6/11

10:20 am-1:50 pm

1 stop12h 30m

$482

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 4/27

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Sat 5/10

8:30 am-8:28 pm

2 stops20h 58m

$545

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 8/6

5:40 pm-6:15 pm

1 stop15h 35m

Brussels Bruxelles-National

Tue 8/19

11:40 am-10:10 pm

2 stops19h 30m

$563

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 4/29

8:20 pm-5:45 pm

1 stop12h 25m

Brussels Bruxelles-National

Mon 5/19

3:00 pm-11:10 am

1 stop29h 10m

$576

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 4/13

1:30 pm-6:00 pm

1 stop19h 30m

Brussels Bruxelles-National

Mon 4/21

9:15 pm-11:10 am

1 stop22h 55m

$578

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 5/10

11:50 pm-7:30 am

2 stops22h 40m

Brussels Bruxelles-National

Tue 6/10

10:45 am-8:18 pm

1 stop18h 33m

$592

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 9/28

7:20 am-8:05 am

1 stop15h 45m

Brussels Bruxelles-National

Tue 10/21

10:00 am-7:31 pm

1 stop18h 31m

$598

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 5/3

7:15 pm-8:50 am

2 stops52h 35m

Brussels Bruxelles-National

Wed 5/14

10:00 am-2:13 pm

2 stops37h 13m

$601

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 4/27

7:23 am-8:40 am

1 stop16h 17m

Brussels Bruxelles-National

Sat 5/10

10:45 am-10:43 pm

1 stop20h 58m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 49 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 $1,146). 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 April 2, 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 April 2, 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
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,323 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,267 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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
1,572 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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.
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very good
7,897 reviews

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

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 ($174), TAP AIR PORTUGAL ($414), and Air France ($465).

  • 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$404Average$547FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$501Average$712FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$637FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$529Average$650FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$537FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$532Average$690FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$543Average$724FlexibilityNo cancel feeOn-time67%
DeltaCheapest$549Average$793FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$554Average$782FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$580Average$752FlexibilityNo cancel feeOn-time76%

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