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$457+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BRU — SEA
Jul 12 — Jul 191
Sat 7/12
Sat 7/19
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 7, 2025.

Round-trip from

$538
(AirNGo)

One-way from

$457
(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 7, 2025.

This AirNGo deal was found by Cheapflights users on 7/5. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/710:50 amBRU - SEA
2 stops31h 29mBritish Airways
Wed 8/206:10 amSEA - BRU
2 stops29h 15mBritish Airways
Deal found 7/5$538
This American Airlines deal was found by Cheapflights users on 7/7. 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.
Thu 8/710:50 amBRU - SEA
1 stop33h 45mAmerican Airlines
Wed 8/203:09 pmSEA - BRU
2 stops20h 16mAmerican Airlines
Deal found 7/7$542
This Aer Lingus deal was found by Cheapflights users on 7/7. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1110:20 amBRU - SEA
1 stop16h 30mAer Lingus
Sat 10/257:35 pmSEA - BRU
1 stop16h 35mAer Lingus
Deal found 7/7$555
This lol.travel deal was found by Cheapflights users on 7/7. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/711:40 amBRU - SEA
1 stop13h 20mFinnair
Wed 8/205:40 pmSEA - BRU
1 stop15h 40mFinnair
Deal found 7/7$557
This Kiwi.com deal was found by Cheapflights users on 7/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:40 amBRU - SEA
2 stops34h 40mMultiple Airlines
Fri 10/33:45 pmSEA - BRU
1 stop12h 05mMultiple Airlines
Deal found 7/5$613
This Gotogate deal was found by Cheapflights users on 7/7. 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.
Sun 7/271:50 pmBRU - SEA
1 stop30h 35mIcelandair
Sun 8/2411:30 pmSEA - BRU
1 stop28h 20mIcelandair
Deal found 7/7$614
This Scandinavian Airlines deal was found by Cheapflights users on 7/5. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/288:30 pmBRU - SEA
1 stop26h 20mScandinavian Airlines
Wed 9/104:00 pmSEA - BRU
1 stop32h 40mScandinavian Airlines
Deal found 7/5$639

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 7, 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

Thu 8/7

10:50 am-9:19 am

2 stops31h 29m

Seattle/Tacoma Intl

Wed 8/20

6:10 am-8:25 pm

2 stops29h 15m

$538

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 8/7

10:50 am-11:35 am

1 stop33h 45m

Seattle/Tacoma Intl

Wed 8/20

3:09 pm-8:25 pm

2 stops20h 16m

$542

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 10/11

10:20 am-5:50 pm

1 stop16h 30m

Seattle/Tacoma Intl

Sat 10/25

7:35 pm-8:10 pm

1 stop16h 35m

$555

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 8/7

11:40 am-4:00 pm

1 stop13h 20m

Seattle/Tacoma Intl

Wed 8/20

5:40 pm-6:20 pm

1 stop15h 40m

$557

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Tue 9/9

8:40 am-10:20 am

2 stops34h 40m

Seattle/Tacoma Intl

Fri 10/3

3:45 pm-12:50 pm

1 stop12h 05m

$613

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sun 7/27

1:50 pm-11:25 am

1 stop30h 35m

Seattle/Tacoma Intl

Sun 8/24

11:30 pm-12:50 pm

1 stop28h 20m

$614

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Thu 8/28

8:30 pm-1:50 pm

1 stop26h 20m

Seattle/Tacoma Intl

Wed 9/10

4:00 pm-9:40 am

1 stop32h 40m

$639

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 8/23

10:05 pm-6:37 pm

3 stops53h 32m

$457

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 10/25

10:20 am-5:50 pm

1 stop16h 30m

$652

BrusselsSeattle

BRU - SEA

BRUSEA

Brussels Bruxelles-National

Sat 10/4

8:30 am-11:55 am

1 stop12h 25m

$673

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/7

Showing 1-10 of 15 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 June is currently the most expensive (average of $388). 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 7, 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 7, 2025.
Read reviews from past customers who have flown Finnair, United Airlines, and Scandinavian 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
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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
1,311 reviews
Finnair
7.6
Good
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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.
United Airlines
7.4
Good
8,846 reviews
Finnair
7.6
Good
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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
1,413 reviews
Finnair
7.6
Good
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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.
Brussels Airlines
7.3
Good
351 reviews
Finnair
7.6
Good
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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
1,311 reviews

Crew

8.1

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Overall

7.6

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 $538, 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 Aer Lingus. You may be able to fly from Brussels Bruxelles-National Airport to Seattle for 26% 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 $652. Users have also found prices from $673 and $686 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 June is currently the most expensive (average of $388). 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

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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 7, 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$684FlexibilityNo 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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