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Bruxelles-National

$239+ Cheap flights from Seattle (SEA) to Bruxelles-National (BRU)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
1 adult, Economy
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Cheap flight deals from Seattle to Bruxelles-National

Cheapest flights from Seattle to Bruxelles-National
Explore the most affordable flight options available from Seattle to Bruxelles-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 24, 2026.

This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Fri 10/231:50 pm
BRU
-
SEA
1 stop15h 50m
Icelandair
Deal found 7/19$557
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Sun 10/181:50 pm
BRU
-
SEA
1 stop15h 50m
Icelandair
Deal found 7/19$559
This Gotogate deal was found by Cheapflights users on 7/21. 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.
Sat 10/103:40 pm
SEA
-
BRU
1 stop12h 15m
Icelandair
Thu 10/221:50 pm
BRU
-
SEA
1 stop15h 50m
Icelandair
Deal found 7/21$560
This Gotogate deal was found by Cheapflights users on 7/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Thu 8/201:50 pm
BRU
-
SEA
1 stop15h 50m
Icelandair
Deal found 7/20$562
This oojo deal was found by Cheapflights users on 7/23. 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 10/33:40 pm
SEA
-
BRU
1 stop12h 15m
Icelandair
Thu 10/151:50 pm
BRU
-
SEA
1 stop13h 05m
Icelandair
Deal found 7/23$563
This Cheapflightsfares deal was found by Cheapflights users on 7/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
-
BRU
1 stop12h 15m
Icelandair
Sat 10/241:50 pm
BRU
-
SEA
1 stop13h 05m
Icelandair
Deal found 7/22$564
This FlightHub deal was found by Cheapflights users on 7/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Sat 10/241:50 pm
BRU
-
SEA
1 stop13h 05m
Icelandair
Deal found 7/20$568

Find flight deals from Seattle to Bruxelles-National

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bruxelles-National (BRU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$557
(oojo)

One-way from

$239
(oojo)

Popular in

June

Cheapest in

January

Average price

$733
Provider with most accurate pricing for Seattle/Tacoma Intl-Brussels Bruxelles-National flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Brussels Bruxelles-National flights.
Search Deals
From Seattle/Tacoma Intl to Brussels Bruxelles-National
Search Deals
One-way flight from Seattle/Tacoma Intl to Brussels Bruxelles-National
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($203 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Bruxelles-National 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 July 24, 2026.
Use the filters below to find and compare flights from Seattle to Brussels Bruxelles-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 10/6

7:00 pm-12:55 pm

1 stop32h 55m

Brussels Bruxelles-National

Fri 10/23

1:50 pm-5:55 pm

1 stop13h 05m

$590

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 11/3

7:00 am-1:15 pm

2 stops21h 15m

Brussels Bruxelles-National

Tue 11/10

10:10 am-6:48 pm

1 stop17h 38m

$723

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 10/12

3:00 pm-1:15 pm

2 stops37h 15m

Brussels Bruxelles-National

Thu 10/15

9:10 am-4:03 pm

2 stops39h 53m

$761

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 11/21

11:16 pm-1:15 pm

2 stops28h 59m

Brussels Bruxelles-National

Tue 12/1

10:10 am-6:59 pm

1 stop17h 49m

$783
Quickest round-trip

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 10/5

8:25 am-7:15 am

1 stop13h 50m

Brussels Bruxelles-National

Fri 10/23

6:20 am-12:20 pm

1 stop15h 00m

$784

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/21

7:00 am-8:00 pm

2 stops28h 00m

Brussels Bruxelles-National

Wed 10/21

8:30 am-12:20 pm

1 stop12h 50m

$786

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/21

7:00 am-1:15 pm

2 stops21h 15m

Brussels Bruxelles-National

Thu 10/22

6:20 am-12:20 pm

1 stop15h 00m

$786
Cheapest one-way

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 8/26

7:00 pm-12:55 pm

1 stop32h 55m

$275

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 8/4

11:25 pm-12:55 pm

1 stop28h 30m

$372
Quickest one-way

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 8/26

8:40 am-1:15 pm

3 stops19h 35m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Sorted by cheapest first

Compare providers for flights from Seattle to Bruxelles-National

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Bruxelles-National in July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Brussels Bruxelles-National Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Brussels Bruxelles-National Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Brussels Bruxelles-National Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Brussels Bruxelles-National Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Brussels Bruxelles-National Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Bruxelles-National

Have a flexible travel schedule? Discover the best time to fly to Bruxelles-National from Seattle 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 Seattle to Brussels Bruxelles-National Airport

How far ahead should I book a flight from Seattle to Brussels Bruxelles-National Airport?

The best time to book flights from Seattle to Brussels Bruxelles-National Airport is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Brussels Bruxelles-National Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Brussels Bruxelles-National Airport (average of $510). Flying from Seattle to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,284). 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.

How much does it cost to fly round-trip from Seattle to Brussels Bruxelles-National Airport?

Airfare is below average for this route at the moment.

Seattle to Brussels Bruxelles-National Airport flights typically cost between $607 and $782 in October.
The cheapest round-trip price found within the last 5 days was $557 on Icelandair (Oct 18-Oct 29).

Reviews of airlines servicing Bruxelles-National

Get insights into the airlines that provide service to Bruxelles-National. 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 Bruxelles-National. Reviews last updated July 24, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andUnited Airlines from Seattle to Brussels Bruxelles-National Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,544 reviews
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Delta
7.8
Good
8,480 reviews
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
United Airlines
7.4
Good
10,026 reviews
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
717 reviews
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,158 reviews
KLM
7.8
Good
1,544 reviews

Entertainment

7.2

Overall

7.8

Food

7.3

Boarding

7.8

Comfort

7.7

Crew

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bruxelles-National. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Brussels Bruxelles-National?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Brussels Bruxelles-National. You should not have trouble finding flights to Brussels Bruxelles-National from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Brussels Bruxelles-National per day. You should also have plenty of airline options to choose from since 6 airlines have flights from the Seattle airport to Brussels Bruxelles-National. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Brussels Bruxelles-National Airport?

    Departing from Seattle to Brussels Bruxelles-National Airport will take you 12h 15m. The distance from Seattle to Brussels Bruxelles-National Airport is about 4941 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Brussels Bruxelles-National Airport round-trip?

    Cheapflights users have booked flights from Seattle to Brussels Bruxelles-National Airport round-trip from $383. Other airlines that can offer you cheap pricing are British Airways, from $421, and KLM, from $481. These flights start at 44% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Brussels Bruxelles-National Airport one-way?

    To fly one-way, consider booking your trip with KLM, which is currently one of the cheapest options available, starting at $232. Icelandair flights start at $304 while deals on Lufthansa start at $370 one-way.

  • Can I find deals for flights from Seattle to Bruxelles-National that include hotel bookings?

    Yes. In addition to deals on Seattle to Bruxelles-National flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bruxelles-National?

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

  • Can I find deals for business class flights from Seattle to Bruxelles-National?

    Yes. Cheapflights offers flight deals from Seattle to Bruxelles-National 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 Seattle to Brussels Bruxelles-National Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Brussels Bruxelles-National Airport (average of $510). Flying from Seattle to Brussels Bruxelles-National Airport in June is currently the most expensive (average of $1,284). 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

Traveling to a place near Brussels Bruxelles-National Airport?

Book flights to Brussels Bruxelles-National Airport if you plan to visit one of these locations
Mons
Hasselt
Charleroi
Mechelen
Zaventem

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Alternative routes for Seattle to Bruxelles-National

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Bruxelles-National flights

Top 6 airlines flying from Seattle to Bruxelles-National

Discover the top 6 airlines that operate flights from Seattle to Bruxelles-National. 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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$383Average$554FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$421Average$620FlexibilityNo cancel feeOn-time70%
KLMCheapest$481Average$685FlexibilityNo cancel feeOn-time75%
DeltaCheapest$482Average$759FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$483Average$741FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$494Average$676FlexibilityNo cancel feeOn-time76%

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