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Bruxelles-National

$220+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This oojo deal was found by Cheapflights users on 1/26. 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 5/17:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Sun 5/101:50 pm
BRU
-
SEA
1 stop15h 50m
Icelandair
Deal found 1/26$407
This Mytrip deal was found by Cheapflights users on 1/24. 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 4/143:40 pm
SEA
-
BRU
2 stops19h 20m
Multiple Airlines
Tue 4/219:25 am
BRU
-
SEA
2 stops18h 53m
Multiple Airlines
Deal found 1/24$456
This oojo deal was found by Cheapflights users on 1/24. 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 5/33:40 pm
SEA
-
BRU
1 stop12h 15m
Icelandair
Sat 5/161:50 pm
BRU
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/24$458
This Mytrip deal was found by Cheapflights users on 1/24. 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.
Thu 1/292:35 pm
SEA
-
BRU
1 stop12h 20m
Icelandair
Thu 2/1212:50 pm
BRU
-
SEA
1 stop13h 10m
Icelandair
Deal found 1/24$468
This Mytrip deal was found by Cheapflights users on 1/24. 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 2/253:40 pm
SEA
-
BRU
2 stops19h 20m
Multiple Airlines
Fri 3/610:00 am
BRU
-
SEA
2 stops21h 16m
Multiple Airlines
Deal found 1/24$470
This Cheapflightsfares deal was found by Cheapflights users on 1/24. 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.
Wed 4/226:50 pm
SEA
-
BRU
1 stop12h 25m
Lufthansa
Thu 5/77:00 am
BRU
-
SEA
2 stops20h 30m
Lufthansa
Deal found 1/24$476
This oojo deal was found by Cheapflights users on 1/26. 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.
Tue 4/287:00 pm
SEA
-
BRU
1 stop32h 55m
Icelandair
Fri 5/151:50 pm
BRU
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/26$478
This Mytrip deal was found by Cheapflights users on 1/24. 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 3/108:10 am
SEA
-
BRU
2 stops21h 05m
Multiple Airlines
Tue 3/177:00 am
BRU
-
SEA
1 stop14h 10m
Multiple Airlines
Deal found 1/24$482
This United Airlines deal was found by Cheapflights users on 1/25. 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 3/1110:55 am
SEA
-
BRU
2 stops18h 20m
United Airlines
Wed 3/1810:00 am
BRU
-
SEA
2 stops42h 56m
United Airlines
Deal found 1/25$485

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$407
(oojo)

One-way from

$220
(oojo)

Popular in

December

Cheapest in

October

Average price

$516
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. 3% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 26, 2026.
Use the filters below to find and compare flights from Seattle to Brussels Bruxelles-National Airport that are best for you.

Fly from

Seattle

Fly to

Bruxelles-National

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 4/22

5:50 am-7:10 am

2 stops16h 20m

Brussels Bruxelles-National

Thu 5/7

7:00 am-2:20 pm

2 stops16h 20m

$491

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 3/10

12:25 pm-1:15 pm

2 stops16h 50m

Brussels Bruxelles-National

Wed 4/15

8:30 am-12:20 pm

1 stop12h 50m

$502

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/11

10:55 am-1:15 pm

2 stops18h 20m

Brussels Bruxelles-National

Wed 3/18

6:45 am-2:20 pm

1 stop15h 35m

$504

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 3/7

11:47 pm-7:55 am

1 stop23h 08m

Brussels Bruxelles-National

Wed 3/25

10:00 am-10:53 pm

2 stops20h 53m

$512

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 3/13

5:20 pm-1:15 pm

2 stops35h 55m

Brussels Bruxelles-National

Mon 3/23

10:00 am-8:56 pm

2 stops42h 56m

$514

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 3/30

3:40 pm-4:15 pm

2 stops15h 35m

Brussels Bruxelles-National

Fri 4/10

9:25 am-7:18 pm

2 stops18h 53m

$528

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 5/10

7:15 am-8:00 pm

2 stops27h 45m

Brussels Bruxelles-National

Thu 5/14

9:25 am-10:59 pm

2 stops46h 34m

$528

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 3/10

11:59 pm-7:55 am

1 stop23h 56m

Brussels Bruxelles-National

Fri 4/10

7:00 am-12:20 pm

1 stop14h 20m

$535

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 4/30

11:48 pm-9:00 am

1 stop24h 12m

Brussels Bruxelles-National

Tue 5/5

9:40 am-10:20 am

1 stop33h 40m

$545

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 5/1

7:20 pm-7:50 am

2 stops51h 30m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/23

Showing 1-10 of 15 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Bruxelles-National. Price data was last updated on January 23, 2026.

The best time to book flights from Seattle to Brussels Bruxelles-National Airport is 38 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 $378). Flying from Seattle to Brussels Bruxelles-National Airport in July is currently the most expensive (average of $505). 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?

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 January 26, 2026.
Peruse reviews from past customers who have flown with KLM, United Airlines, and Icelandair 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
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,442 reviews
KLM
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
United Airlines
7.4
Good
9,199 reviews
KLM
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Icelandair
7.1
Good
603 reviews
KLM
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,747 reviews
KLM
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,701 reviews
KLM
7.7
Good
1,442 reviews

Crew

8.4

Comfort

7.6

Food

7.3

Boarding

7.8

Entertainment

7.1

Overall

7.7

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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 9 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 16h 20m. 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 $385. Other airlines that can offer you cheap pricing are British Airways, from $474, and Delta, from $482. These flights start at 37% 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 Icelandair, which is currently one of the cheapest options available, starting at $175. United Airlines flights start at $324 while deals on KLM start at $373 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 $378). Flying from Seattle to Brussels Bruxelles-National Airport in July is currently the most expensive (average of $505). 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

Browse thousands of different options on Cheapflights for your next trip

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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
Seattle to Charleroi Brussels flights
Portland to Charleroi Brussels flights

Top 9 airlines flying from Seattle to Bruxelles-National

Discover the top 9 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$385Average$483FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$474Average$727FlexibilityNo cancel feeOn-time70%
DeltaCheapest$482Average$683FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$483Average$723FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$488Average$491FlexibilityNo cancel feeOn-time72%
LufthansaCheapest$494Average$684FlexibilityNo cancel feeOn-time76%
KLMCheapest$508Average$680FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$518Average$808FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$536Average$592FlexibilityNo cancel feeOn-timeN/A

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