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$263+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Round-trip from

$489
(oojo)

One-way from

$263
(Gotogate)

Popular in

June

Cheapest in

February

Average price

$633
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 ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 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 22, 2025.

This oojo deal was found by Cheapflights users on 4/22. 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.
Fri 10/107:00 pmSEA - BRU
1 stop32h 50mIcelandair
Mon 10/201:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 4/22$489
This Air Canada deal was found by Cheapflights users on 4/22. 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.
Mon 11/245:45 amSEA - BRU
2 stops17h 10mAir Canada
Tue 12/210:00 amBRU - SEA
2 stops32h 50mAir Canada
Deal found 4/22$530
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Mon 11/247:00 amSEA - BRU
1 stop16h 55mUnited Airlines
Tue 12/24:55 pmBRU - SEA
2 stops34h 30mUnited Airlines
Deal found 4/22$561
This United deal was found by Cheapflights users on 4/22. 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.
Fri 8/82:35 pmSEA - BRU
1 stop31h 25mMultiple Airlines
Tue 8/1910:00 amBRU - SEA
2 stops36h 01mMultiple Airlines
Deal found 4/22$574
This FlightHub deal was found by Cheapflights users on 4/22. 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 11/242:00 pmSEA - BRU
1 stop14h 35mLufthansa
Tue 12/29:40 amBRU - SEA
1 stop12h 40mLufthansa
Deal found 4/22$578
This Delta deal was found by Cheapflights users on 4/22. 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 9/1312:40 amSEA - BRU
2 stops23h 00mDelta
Tue 10/2110:45 amBRU - SEA
2 stops20h 40mDelta
Deal found 4/22$585
This British Airways deal was found by Cheapflights users on 4/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/148:20 pmSEA - BRU
1 stop13h 30mBritish Airways
Wed 8/206:40 pmBRU - SEA
1 stop25h 55mBritish Airways
Deal found 4/22$612
This oojo deal was found by Cheapflights users on 4/22. 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 4/22$653
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:40 pmPDX - BRU
2 stops27h 25mAir Canada
Fri 10/2410:00 amBRU - PDX
2 stops34h 49mAir Canada
Deal found 4/22$702
This Mytrip deal was found by Cheapflights users on 4/22. 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 5/63:25 pmPDX - BRU
2 stops19h 35mMultiple Airlines
Wed 5/149:40 amBRU - PDX
2 stops18h 05mMultiple Airlines
Deal found 4/22$723
This KLM deal was found by Cheapflights users on 4/22. 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.
Mon 10/137:00 amPDX - BRU
1 stop16h 40mKLM
Tue 10/2810:00 amBRU - PDX
1 stop21h 29mKLM
Deal found 4/22$729
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Tue 5/66:50 amPDX - BRU
1 stop15h 35mUnited Airlines
Wed 5/1410:00 amBRU - PDX
2 stops40h 28mUnited Airlines
Deal found 4/22$731

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 22, 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

Fri 10/10

7:00 pm-12:50 pm

1 stop32h 50m

Brussels Bruxelles-National

Mon 10/20

1:50 pm-8:40 pm

1 stop15h 50m

$489

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 9/14

7:20 am-8:05 am

1 stop15h 45m

Brussels Bruxelles-National

Thu 10/16

10:00 am-10:16 pm

2 stops45h 16m

$565

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 8/8

2:35 pm-7:00 am

1 stop31h 25m

Brussels Bruxelles-National

Tue 8/19

10:00 am-1:01 pm

2 stops36h 01m

$574

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 9/13

12:40 am-8:40 am

2 stops23h 00m

Brussels Bruxelles-National

Wed 10/15

10:45 am-10:25 pm

1 stop20h 40m

$585

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 10/10

2:55 pm-8:05 am

2 stops56h 10m

Brussels Bruxelles-National

Mon 10/20

5:30 pm-11:55 am

1 stop27h 25m

$609

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 8/14

8:20 pm-6:50 pm

1 stop13h 30m

Brussels Bruxelles-National

Wed 8/20

6:40 pm-11:35 am

1 stop25h 55m

$612

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 8/13

12:20 am-9:00 am

1 stop23h 40m

Brussels Bruxelles-National

Wed 8/20

10:30 am-11:55 am

1 stop34h 25m

$629

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

$653

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Mon 10/13

7:40 pm-8:05 am

2 stops27h 25m

Brussels Bruxelles-National

Fri 10/24

10:00 am-11:49 am

2 stops34h 49m

$702

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Tue 5/6

3:25 pm-8:00 pm

2 stops19h 35m

Brussels Bruxelles-National

Wed 5/14

9:40 am-6:45 pm

2 stops18h 05m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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.

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 22, 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 22, 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
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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
1,441 reviews
Delta
8.0
Very good
7,920 reviews

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

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 ($263), TAP AIR PORTUGAL ($439), and Air France ($488).

  • 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$403Average$536FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$495Average$662FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$583FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$529Average$661FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$544FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$532Average$668FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$543Average$724FlexibilityNo cancel feeOn-time67%
DeltaCheapest$549Average$769FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$554Average$747FlexibilityNo cancel feeOn-time77%
FinnairCheapest$572Average$787FlexibilityNo cancel feeOn-time76%

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