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$322+ Cheap flights from Washington to Brussels

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Washington to Brussels

Keep the following information in mind while searching for Washington to Brussels flight deals. Data was last updated August 1, 2025.

Round-trip from

$464
(United Airlines)

One-way from

$322
(TAP AIR PORTUGAL)

Popular in

June

Cheapest in

September

Average price

$642
From Washington to Brussels
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One-way flight from Washington to Brussels
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Highest demand for flights based on searches. 15% potential increase in price ($116 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 August 2025
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Find flight deals from Washington to Brussels

Cheapest flights from Washington to Brussels
Explore the most affordable flight options available from Washington to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This United Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 9/108:00 amSEA - BRU
1 stop14h 15mUnited Airlines
Thu 9/1810:00 amBRU - SEA
2 stops43h 42mUnited Airlines
Deal found 7/31$464
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 8/189:45 pmSEA - BRU
1 stop25h 55mDelta
Tue 8/2610:45 amBRU - SEA
2 stops22h 14mDelta
Deal found 7/30$467
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:00 pmSEA - BRU
2 stops16h 15mMultiple Airlines
Thu 9/1810:00 amBRU - SEA
2 stops21h 16mMultiple Airlines
Deal found 7/31$469
This Virgin Atlantic deal was found by Cheapflights users on 7/31. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/316:00 amSEA - BRU
1 stop17h 40mVirgin Atlantic
Wed 8/2010:45 amBRU - SEA
1 stop22h 14mVirgin Atlantic
Deal found 7/31$470
This Priceline deal was found by Cheapflights users on 7/31. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/187:20 amSEA - BRU
1 stop15h 40mAir Canada
Wed 8/2710:00 amBRU - SEA
2 stops32h 21mAir Canada
Deal found 7/31$472
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:20 pmSEA - BRU
2 stops17h 00mBritish Airways
Wed 12/35:55 pmBRU - SEA
1 stop32h 00mBritish Airways
Deal found 7/30$473
This Iberia deal was found by Cheapflights users on 7/30. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/123:09 pmSEA - BRU
2 stops18h 46mIberia
Thu 8/2112:10 pmBRU - SEA
2 stops20h 31mIberia
Deal found 7/30$488
This oojo deal was found by Cheapflights users on 7/30. 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.
Sat 8/911:30 pmSEA - BRU
1 stop28h 20mIcelandair
Sat 8/231:50 pmBRU - SEA
1 stop30h 35mIcelandair
Deal found 7/30$498
This SWISS deal was found by Cheapflights users on 7/31. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/164:20 pmSEA - BRU
1 stop31h 30mSWISS
Mon 8/256:00 pmBRU - SEA
2 stops37h 59mSWISS
Deal found 7/31$542
This oojo deal was found by Cheapflights users on 7/29. 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.
Wed 10/83:20 pmPDX - BRU
1 stop12h 30mIcelandair
Fri 10/241:50 pmBRU - PDX
1 stop13h 05mIcelandair
Deal found 7/29$587
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:27 amPDX - BRU
2 stops17h 23mUnited Airlines
Sun 12/710:00 amBRU - PDX
2 stops41h 45mUnited Airlines
Deal found 7/29$634
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Wed 8/276:15 amPDX - BRU
2 stops16h 45mMultiple Airlines
Wed 9/310:00 amBRU - PDX
2 stops22h 01mMultiple Airlines
Deal found 7/30$651

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Brussels 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 August 1, 2025.
Use the filters below to find and compare flights from Washington to Brussels that are best for you.

Fly from

Washington

Fly to

Brussels

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/10

8:00 am-7:15 am

1 stop14h 15m

Brussels Bruxelles-National

Thu 9/18

10:00 am-8:42 pm

2 stops43h 42m

$464

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 8/18

9:45 pm-8:40 am

1 stop25h 55m

Brussels Bruxelles-National

Tue 8/26

10:45 am-11:59 pm

2 stops22h 14m

$467

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/10

12:00 pm-1:15 pm

2 stops16h 15m

Brussels Bruxelles-National

Thu 9/18

10:00 am-10:16 pm

2 stops21h 16m

$469

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 8/18

7:20 am-8:00 am

1 stop15h 40m

Brussels Bruxelles-National

Wed 8/27

10:00 am-9:21 am

2 stops32h 21m

$472

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 8/26

6:00 am-8:40 am

1 stop17h 40m

Brussels Bruxelles-National

Tue 9/2

10:45 am-10:14 pm

2 stops20h 29m

$480

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 8/12

3:09 pm-6:55 pm

2 stops18h 46m

Brussels Bruxelles-National

Thu 8/21

12:10 pm-11:41 pm

2 stops20h 31m

$488

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 8/9

11:30 pm-12:50 pm

1 stop28h 20m

Brussels Bruxelles-National

Sat 8/23

1:50 pm-11:25 am

1 stop30h 35m

$498

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 8/19

3:09 pm-5:45 pm

2 stops17h 36m

Brussels Bruxelles-National

Wed 8/27

10:55 am-11:41 pm

2 stops21h 46m

$519

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 8/16

4:20 pm-8:50 am

1 stop31h 30m

Brussels Bruxelles-National

Mon 8/25

6:00 pm-10:59 pm

2 stops37h 59m

$542

PortlandBrussels

PDX - BRU

PDXBRU

Portland

Wed 10/8

3:20 pm-12:50 pm

1 stop12h 30m

Brussels Bruxelles-National

Fri 10/24

1:50 pm-5:55 pm

1 stop13h 05m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 34 results
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Best time to book a flight from Washington to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels 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 Brussels

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

Currently, November is the cheapest month in which you can book a flight from State of Washington to Brussels (average of $614). Flying from State of Washington to Brussels in June is currently the most expensive (average of $1,081). 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 BRU?

Find hourly flight availability from Washington to Brussels. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Brussels as you normally would.

Reviews of airlines servicing Brussels

Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated August 1, 2025.
See what other customers who have flown with Delta, KLM, and SWISS from Washington to Brussels have to say. 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
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
655 reviews
Delta
8.0
Very good
7,981 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington to Brussels. 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 Brussels one-way?

    The cheapest airlines for a one-way flight from State of Washington to Brussels are TAP AIR PORTUGAL ($322), Icelandair ($350), and Delta ($411).

  • What are the most popular routes from State of Washington to Brussels?

    The most popular route from State of Washington to Brussels is Seattle/Tacoma Intl - Brussels Bruxelles-National. You may also consider Portland - Brussels Bruxelles-National or Seattle/Tacoma Intl - Charleroi Brussels.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Brussels 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 Brussels?

    Currently, November is the cheapest month in which you can book a flight from State of Washington to Brussels (average of $614). Flying from State of Washington to Brussels in June is currently the most expensive (average of $1,081). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Brussels

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Bruxelles-National flights
Newark to Bruxelles-National flights
O'Hare Intl to Bruxelles-National flights
Dulles Intl to Bruxelles-National flights
LaGuardia to Bruxelles-National flights
Dallas/Fort Worth to Bruxelles-National flights
Hobby to Bruxelles-National flights
Boston to Bruxelles-National flights
Reagan-National to Bruxelles-National flights
Baltimore to Bruxelles-National flights
Atlanta to Bruxelles-National flights
Los Angeles to Bruxelles-National flights
Midway to Bruxelles-National flights
Miami to Bruxelles-National flights
San Francisco to Bruxelles-National flights
Newark to Charleroi Brussels flights
Detroit to Bruxelles-National flights
Seattle to Bruxelles-National flights
John F Kennedy Intl to Charleroi Brussels flights
Love Field to Bruxelles-National flights
George Bush Intcntl to Bruxelles-National flights
Denver to Bruxelles-National flights
Portland to Bruxelles-National flights
Charlotte to Bruxelles-National flights
Boston to Charleroi Brussels flights
Dallas/Fort Worth to Charleroi Brussels flights
Dulles Intl to Charleroi Brussels flights
Minneapolis to Bruxelles-National flights
O'Hare Intl to Charleroi Brussels flights
St. Louis to Bruxelles-National flights
Philadelphia to Bruxelles-National flights
Raleigh to Bruxelles-National flights
Sky Harbor Intl to Bruxelles-National flights
Austin to Bruxelles-National flights
Orlando to Bruxelles-National flights
Fort Lauderdale to Bruxelles-National flights
San Jose to Bruxelles-National flights
Tampa to Bruxelles-National flights
Ontario to Bruxelles-National flights
Santa Ana to Bruxelles-National flights
Las Vegas to Bruxelles-National flights
Pittsburgh to Bruxelles-National flights
San Diego to Bruxelles-National flights
Cincinnati to Bruxelles-National flights
Des Moines to Bruxelles-National flights
Miami to Charleroi Brussels flights
Atlanta to Charleroi Brussels flights
Indianapolis to Bruxelles-National flights
Los Angeles to Charleroi Brussels flights

Top 10 airlines flying from Washington to Brussels

Discover the top 10 airlines that operate flights from Washington to Brussels. 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$389Average$496FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$501Average$620FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$502Average$691FlexibilityNo cancel feeOn-time70%
KLMCheapest$511Average$709FlexibilityNo cancel feeOn-time75%
DeltaCheapest$514Average$717FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$522Average$675FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$538FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$543Average$740FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$547Average$665FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$570Average$736FlexibilityNo cancel feeOn-time76%

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