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$483+ Cheap flights from Bruxelles-National (BRU) to Seattle (SEA)

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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — SEA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Brussels Bruxelles-National to Seattle/Tacoma Intl are usually found in January or March, booked 36 days in advance, depart on a Sunday or Friday and return on a Tuesday

Cheap flight deals from Bruxelles-National to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Bruxelles-National (BRU) to Seattle (SEA). 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 3, 2025.

Round-trip from

$549
(British Airways)

One-way from

$483
(Kiwi.com)

Popular in

October

Cheapest in

January

Average price

$843
From Brussels Bruxelles-National to Seattle/Tacoma Intl
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One-way flight from Brussels Bruxelles-National to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 6% potential increase in price ($54 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Bruxelles-National to Seattle

Cheapest flights from Bruxelles-National to Seattle
Explore the most affordable flight options available from Bruxelles-National to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This British Airways deal was found by Cheapflights users on 7/2. 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.
Tue 8/1210:55 amBRU - SEA
2 stops21h 46mBritish Airways
Tue 8/193:09 pmSEA - BRU
2 stops17h 36mBritish Airways
Deal found 7/2$549
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1410:40 amBRU - SEA
2 stops32h 16mAmerican Airlines
Mon 7/281:30 pmSEA - BRU
1 stop21h 05mAmerican Airlines
Deal found 7/1$571
This lastminute.com deal was found by Cheapflights users on 7/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:20 amBRU - SEA
1 stop16h 30mAer Lingus
Tue 9/307:35 pmSEA - BRU
1 stop16h 05mAer Lingus
Deal found 7/2$611
This oojo deal was found by Cheapflights users on 7/2. 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 8/121:50 pmBRU - SEA
1 stop13h 00mIcelandair
Tue 8/193:45 pmSEA - BRU
1 stop12h 05mIcelandair
Deal found 7/2$619
This Finnair deal was found by Cheapflights users on 7/2. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/712:05 pmBRU - SEA
2 stops20h 36mFinnair
Wed 8/205:40 pmSEA - BRU
1 stop15h 40mFinnair
Deal found 7/2$624
This Trip.com deal was found by Cheapflights users on 7/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:30 pmBRU - SEA
1 stop26h 30mScandinavian Airlines
Wed 9/244:20 pmSEA - BRU
1 stop32h 20mScandinavian Airlines
Deal found 7/1$636
This Iberia deal was found by Cheapflights users on 7/2. 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.
Mon 9/157:40 pmBRU - SEA
2 stops33h 29mMultiple Airlines
Tue 9/301:30 pmSEA - BRU
1 stop21h 55mMultiple Airlines
Deal found 7/2$655
This Flighttix deal was found by Cheapflights users on 7/1. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1710:00 amBRU - SEA
2 stops17h 36mAir Canada
Wed 9/245:30 amSEA - BRU
2 stops17h 35mAir Canada
Deal found 7/1$707
This KLM deal was found by Cheapflights users on 7/2. 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.
Sat 9/138:00 amBRU - SEA
1 stop12h 45mKLM
Fri 9/267:45 amSEA - BRU
1 stop15h 55mKLM
Deal found 7/2$733
This Delta deal was found by Cheapflights users on 7/2. 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.
Fri 9/128:00 amBRU - SEA
1 stop12h 45mDelta
Fri 9/267:20 amSEA - BRU
2 stops17h 30mDelta
Deal found 7/2$735
This Flighttix deal was found by Cheapflights users on 7/2. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1312:00 pmBRU - SEA
2 stops19h 42mUnited Airlines
Wed 8/275:02 amSEA - BRU
2 stops17h 13mUnited Airlines
Deal found 7/2$739

Cheapflights Fare Finder

Customize your flight search to find flights from Bruxelles-National to Seattle 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 3, 2025.
Use the filters below to find and compare flights from Brussels Bruxelles-National Airport to Seattle that are best for you.

Fly from

Bruxelles-National

Fly to

Seattle

Route

Depart

Return

Price

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 8/12

10:55 am-11:41 pm

2 stops21h 46m

Seattle/Tacoma Intl

Tue 8/19

3:09 pm-5:45 pm

2 stops17h 36m

$549

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 7/14

10:40 am-9:56 am

2 stops32h 16m

Seattle/Tacoma Intl

Mon 7/28

1:30 pm-7:35 pm

1 stop21h 05m

$571

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 9/15

10:20 am-5:50 pm

1 stop16h 30m

Seattle/Tacoma Intl

Tue 9/30

7:35 pm-8:40 pm

1 stop16h 05m

$611

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 8/12

1:50 pm-5:50 pm

1 stop13h 00m

Seattle/Tacoma Intl

Tue 8/19

3:45 pm-12:50 pm

1 stop12h 05m

$619

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 8/7

12:05 pm-11:41 pm

2 stops20h 36m

Seattle/Tacoma Intl

Wed 8/20

5:40 pm-6:20 pm

1 stop15h 40m

$624

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 9/18

8:30 pm-2:00 pm

1 stop26h 30m

Seattle/Tacoma Intl

Wed 9/24

4:20 pm-9:40 am

1 stop32h 20m

$636

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Mon 9/15

7:40 pm-8:09 pm

2 stops33h 29m

Seattle/Tacoma Intl

Tue 9/30

1:30 pm-8:25 pm

1 stop21h 55m

$655

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Wed 9/17

10:00 am-6:36 pm

2 stops17h 36m

Seattle/Tacoma Intl

Wed 9/24

5:30 am-8:05 am

2 stops17h 35m

$707

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 9/13

8:00 am-11:45 am

1 stop12h 45m

Seattle/Tacoma Intl

Fri 9/26

7:45 am-8:40 am

1 stop15h 55m

$733

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Fri 9/12

8:00 am-11:45 am

1 stop12h 45m

Seattle/Tacoma Intl

Fri 9/26

7:20 am-9:50 am

2 stops17h 30m

$735

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 16 results
1
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Best time to book a flight from Bruxelles-National to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Bruxelles-National to Seattle. Price data was last updated on June 27, 2025.

The best time to book flights from Brussels Bruxelles-National Airport to Seattle is 36 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 Brussels Bruxelles-National Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Brussels Bruxelles-National Airport to Seattle (average of $238). Flying from Brussels Bruxelles-National Airport to Seattle in July is currently the most expensive (average of $390). 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 BRU to SEA?

Find hourly flight availability from Bruxelles-National to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

It’s optimal to fly from Brussels Bruxelles-National Airport to Seattle in the morning. By choosing this option you can save up to 16% on the cost of your flight, compared to a flight at noon.

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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Finnair, Scandinavian Airlines, and American Airlines from Brussels Bruxelles-National Airport to Seattle. 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.
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,306 reviews
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Scandinavian Airlines
7.3
Good
1,416 reviews
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
American Airlines
7.2
Good
10,000 reviews
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Air Canada
7.1
Good
9,681 reviews
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Aer Lingus
7.1
Good
1,144 reviews
Finnair
7.6
Good
1,306 reviews

Comfort

7.4

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.9

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from Bruxelles-National to Seattle. 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 into for flights to Seattle from Brussels Bruxelles-National?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Brussels Bruxelles-National. On average, Seattle/Tacoma Intl has 0 inbound flights from Brussels Bruxelles-National per day from 8 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    British Airways, at $549, was found to be the cheapest airline from Brussels Bruxelles-National Airport to Seattle.Alternate airlines to your destination round-trip include American Airlines and Icelandair. You may be able to fly from Brussels Bruxelles-National Airport to Seattle for 25% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $639. Users have also found prices from $681 and $688 on Lufthansa and Icelandair, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Brussels Bruxelles-National Airport to Seattle (average of $238). Flying from Brussels Bruxelles-National Airport to Seattle in July is currently the most expensive (average of $390). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Bruxelles-National to Seattle

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

Top 8 airlines flying from Bruxelles-National to Seattle

Discover the top 8 airlines that operate flights from Bruxelles-National to Seattle. 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$524Average$623FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$601Average$626FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$604Average$801FlexibilityNo cancel feeOn-time69%
KLMCheapest$605Average$686FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$611Average$941FlexibilityNo cancel feeOn-time70%
DeltaCheapest$616Average$772FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$651Average$723FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$670Average$780FlexibilityNo cancel feeOn-time76%

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