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$314+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
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 septiembre 15, 2025.

Round-trip from

$384
(CrystalTravel)

One-way from

$314
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$527
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. 14% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 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 septiembre 15, 2025.

This Gotogate deal was found by Cheapflights users on 9/13. 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.
jue. 10/233:45 pmSEA - BRU
1 stop12h 05mIcelandair
jue. 11/612:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 9/13$386
This CrystalTravel deal was found by Cheapflights users on 9/14. 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.
jue. 10/93:45 pmSEA - BRU
1 stop12h 05mIcelandair
jue. 10/161:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 9/14$392
This FlightHub deal was found by Cheapflights users on 9/13. 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.
mié. 10/223:45 pmSEA - BRU
1 stop12h 30mIcelandair
jue. 1/2212:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 9/13$394
This oojo deal was found by Cheapflights users on 9/13. 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.
mié. 11/52:35 pmSEA - BRU
1 stop12h 20mIcelandair
dom. 11/1612:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 9/13$398
This oojo deal was found by Cheapflights users on 9/13. 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.
dom. 10/53:45 pmSEA - BRU
1 stop12h 05mIcelandair
vie. 10/101:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 9/13$407
This Mytrip deal was found by Cheapflights users on 9/13. 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.
mar. 10/285:50 amSEA - BRU
2 stops18h 00mAir Canada
mar. 11/410:00 amBRU - SEA
2 stops18h 16mAir Canada
Deal found 9/13$415
This Icelandair deal was found by Cheapflights users on 9/13. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/193:45 pmSEA - BRU
1 stop12h 05mIcelandair
vie. 1/2312:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 9/13$416
This Mytrip deal was found by Cheapflights users on 9/12. 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.
mar. 10/285:50 amSEA - BRU
2 stops18h 00mMultiple Airlines
mar. 11/410:00 amBRU - SEA
2 stops18h 16mMultiple Airlines
Deal found 9/12$423
This United Airlines deal was found by Cheapflights users on 9/15. 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.
mié. 11/57:00 amSEA - BRU
1 stop16h 55mUnited Airlines
mar. 11/1810:00 amBRU - SEA
2 stops43h 54mUnited Airlines
Deal found 9/15$435
This FlightHub deal was found by Cheapflights users on 9/14. 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.
mar. 12/23:15 pmPDX - BRU
2 stops31h 35mAir Canada
mar. 12/910:00 amBRU - PDX
2 stops41h 45mAir Canada
Deal found 9/14$529
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mar. 12/27:00 amPDX - BRU
1 stop16h 55mUnited Airlines
mar. 12/910:00 amBRU - PDX
2 stops34h 48mUnited Airlines
Deal found 9/14$534
This United Airlines deal was found by Cheapflights users on 9/14. 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.
mié. 10/298:20 amPDX - BRU
1 stop14h 55mUnited Airlines
mié. 11/510:00 amBRU - PDX
2 stops23h 26mUnited Airlines
Deal found 9/14$556

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 septiembre 15, 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

dom. 10/19

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

jue. 1/22

12:50 pm-5:00 pm

1 stop13h 10m

$416

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 3/4

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

dom. 3/15

12:50 pm-6:00 pm

1 stop13h 10m

$416

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

jue. 10/23

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

vie. 1/23

12:50 pm-5:00 pm

1 stop13h 10m

$416

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 11/5

10:53 am-8:55 am

1 stop13h 02m

Brussels Bruxelles-National

mar. 11/18

10:00 am-8:54 pm

2 stops43h 54m

$435

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mar. 2/10

10:58 am-8:55 am

1 stop12h 57m

Brussels Bruxelles-National

mar. 3/10

10:00 am-6:59 pm

2 stops40h 59m

$435

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

mié. 11/12

10:53 am-8:55 am

1 stop13h 02m

Brussels Bruxelles-National

mar. 11/18

10:00 am-8:54 pm

2 stops43h 54m

$435

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mié. 10/29

8:20 am-7:15 am

1 stop14h 55m

Brussels Bruxelles-National

mié. 11/5

10:10 am-6:40 pm

1 stop17h 30m

$556

PortlandBrussels

PDX - BRU

PDXBRU

Portland

mar. 12/2

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

mar. 12/9

10:10 am-6:45 pm

1 stop17h 35m

$556

PortlandBrussels

PDX - BRU

PDXBRU

Portland

lun. 12/1

12:59 am-6:25 pm

2 stops32h 26m

Brussels Bruxelles-National

mar. 12/9

7:10 pm-7:10 pm

2 stops33h 00m

$582

PortlandBrussels

PDX - BRU

PDXBRU

Portland

vie. 3/6

8:00 am-7:15 am

1 stop14h 15m

Brussels Bruxelles-National

mar. 3/10

10:00 am-6:05 pm

2 stops40h 05m

$583

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 36 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 $1,077). 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 septiembre 15, 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.

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.

  • How long is the flight from State of Washington to Brussels?

    There are many flights that can get you from State of Washington to Brussels in 12h 05m. Fly via Icelandair or United Airlines to get the fastest option. The distance from State of Washington to Brussels is about 4941 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Icelandair ($333), British Airways ($435), and Delta ($488).

  • 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 $1,077). 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 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
Dulles Intl to Bruxelles-National flights
O'Hare Intl to Bruxelles-National flights
LaGuardia to Bruxelles-National flights
Reagan-National to Bruxelles-National flights
Baltimore to Bruxelles-National flights
Boston to Bruxelles-National flights
John F Kennedy Intl to Charleroi Brussels flights
Atlanta to Bruxelles-National flights
Newark to Charleroi Brussels flights
Los Angeles to Bruxelles-National flights
Seattle to Bruxelles-National flights
Midway to Bruxelles-National flights
Dallas/Fort Worth to Bruxelles-National flights
Miami to Bruxelles-National flights
San Francisco to Bruxelles-National flights
Hobby to Bruxelles-National flights
Charlotte to Bruxelles-National flights
Denver to Bruxelles-National flights
Sky Harbor Intl to Bruxelles-National flights
Philadelphia to Bruxelles-National flights
Orlando to Bruxelles-National flights
Boston to Charleroi Brussels flights
Portland to Bruxelles-National flights
Detroit to Bruxelles-National flights
Minneapolis to Bruxelles-National flights
San Diego to Bruxelles-National flights
Dulles Intl to Charleroi Brussels flights
O'Hare Intl to Charleroi Brussels flights
Fort Lauderdale to Bruxelles-National flights
George Bush Intcntl to Bruxelles-National flights
Love Field to Bruxelles-National flights
Raleigh to Bruxelles-National flights
St. Louis to Bruxelles-National flights
Richmond to Bruxelles-National flights
Ontario to Bruxelles-National flights
Cleveland to Bruxelles-National flights
Los Angeles to Charleroi Brussels flights
Pittsburgh to Bruxelles-National flights
Tampa to Bruxelles-National flights
Providence to Bruxelles-National flights
Miami to Charleroi Brussels flights
Seattle to Charleroi Brussels flights
Pensacola to Bruxelles-National flights
Madison to Bruxelles-National flights
Salt Lake City to Bruxelles-National flights
Hartford to Bruxelles-National flights
Cincinnati to Bruxelles-National flights
West Palm Beach to Bruxelles-National 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$391Average$497FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$483Average$725FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$488Average$491FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$502Average$714FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$506Average$607FlexibilityNo cancel feeOn-time77%
KLMCheapest$511Average$702FlexibilityNo cancel feeOn-time75%
DeltaCheapest$514Average$722FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$532Average$556FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$543Average$740FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$561Average$733FlexibilityNo cancel feeOn-time76%

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