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$328+ Cheap flights from Seattle (SEA) 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Brussels are usually found in February or November, booked 61 days in advance, depart on a Tuesday or Monday and return on a Sunday

Cheap flight deals from Seattle to Brussels

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Brussels (BR1). 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 December 18, 2024.

Round-trip from

$412
(Flightnetwork)

One-way from

$328
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$663
From Seattle/Tacoma Intl to Brussels
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One-way flight from Seattle/Tacoma Intl to Brussels
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High demand for flights, 22% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Seattle to Brussels

Cheapest flights from Seattle to Brussels
Explore the most affordable flight options available from Seattle to Brussels. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/2611:15 pmSEA - BRU
1 stop23h 00mUnited Airlines
Thu 1/94:55 pmBRU - SEA
2 stops34h 30mUnited Airlines
Deal found 12/17$1,224
This AranGrant deal was found by Cheapflights users on 12/18. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/265:20 pmSEA - BRU
1 stop20h 15mMultiple Airlines
Thu 1/96:45 amBRU - SEA
1 stop17h 05mMultiple Airlines
Deal found 12/18$1,363
This Orbitz deal was found by Cheapflights users on 12/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:45 amSEA - BRU
2 stops17h 10mAir Canada
Thu 1/99:45 amBRU - SEA
2 stops20h 45mAir Canada
Deal found 12/17$1,619
This CrystalTravel deal was found by Cheapflights users on 12/16. 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.
Wed 12/257:00 pmSEA - BRU
1 stop18h 00mTurkish Airlines
Wed 1/17:50 amBRU - SEA
1 stop18h 15mTurkish Airlines
Deal found 12/16$1,997
This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/2511:00 pmSEA - BRU
1 stop25h 00mDelta
Fri 1/36:15 amBRU - SEA
1 stop14h 42mDelta
Deal found 12/17$1,998
This KLM deal was found by Cheapflights users on 12/18. 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.
Wed 12/257:15 amSEA - BRU
1 stop16h 45mKLM
Fri 1/311:00 amBRU - SEA
1 stop20h 24mKLM
Deal found 12/18$2,300
This AranGrant deal was found by Cheapflights users on 12/17. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:50 pmSEA - BRU
1 stop12h 50mBritish Airways
Thu 1/98:35 pmBRU - SEA
1 stop29h 20mBritish Airways
Deal found 12/17$2,331
This Lufthansa deal was found by Cheapflights users on 12/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/252:20 pmSEA - BRU
2 stops16h 45mLufthansa
Fri 1/109:10 amBRU - SEA
1 stop13h 10mLufthansa
Deal found 12/17$2,345
This Cheapflightsfares deal was found by Cheapflights users on 12/17. 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 12/2512:31 amSEA - BRU
2 stops24h 04mAer Lingus
Wed 1/110:15 amBRU - SEA
2 stops22h 16mAer Lingus
Deal found 12/17$3,145
This Air France deal was found by Cheapflights users on 12/17. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/257:15 amSEA - BRU
1 stop16h 45mAir France
Thu 1/211:00 amBRU - SEA
1 stop20h 24mAir France
Deal found 12/17$4,329
This Scandinavian Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/257:15 amSEA - BRU
2 stops17h 35mScandinavian Airlines
Mon 1/610:30 amBRU - SEA
2 stops20h 55mScandinavian Airlines
Deal found 12/17$4,618
This Iberia deal was found by Cheapflights users on 12/17. 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.
Wed 12/2510:26 amSEA - BRU
2 stops19h 19mIberia
Tue 1/77:45 pmBRU - SEA
2 stops30h 10mIberia
Deal found 12/17$4,797

Find flights from Seattle to Brussels within your budget

Customize your flight search to find flights from Seattle 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 1/23

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Fri 1/31

12:50 pm-5:00 pm

1 stop13h 10m

$412

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 1/22

6:05 am-7:55 am

2 stops16h 50m

Brussels Bruxelles-National

Wed 1/29

10:00 am-6:30 pm

2 stops17h 30m

$491

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 1/22

6:05 am-7:55 am

2 stops16h 50m

Brussels Bruxelles-National

Wed 1/29

11:55 am-8:31 pm

1 stop17h 36m

$498

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 1/15

5:00 am-7:55 am

2 stops17h 55m

Brussels Bruxelles-National

Wed 1/29

10:00 am-6:15 pm

2 stops41h 15m

$518

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 1/22

11:05 am-8:55 am

1 stop12h 50m

Brussels Bruxelles-National

Wed 1/29

11:55 am-8:31 pm

1 stop17h 36m

$528

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 1/13

6:50 pm-1:35 pm

1 stop33h 45m

Brussels Bruxelles-National

Tue 1/28

9:45 pm-4:55 pm

1 stop28h 10m

$555

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 1/23

11:05 am-8:55 am

1 stop12h 50m

Brussels Bruxelles-National

Fri 1/31

11:55 am-8:31 pm

1 stop17h 36m

$577

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 3/20

7:50 pm-5:10 pm

1 stop13h 20m

Brussels Bruxelles-National

Thu 3/27

5:30 pm-12:20 pm

1 stop26h 50m

$602

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 3/22

10:55 pm-9:00 am

1 stop26h 05m

Brussels Bruxelles-National

Sun 3/30

10:35 am-4:00 pm

1 stop14h 25m

$613

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sat 2/1

3:25 pm-7:10 pm

2 stops18h 45m

Brussels Bruxelles-National

Sat 2/8

9:45 am-11:10 pm

2 stops22h 25m

$676

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 22 results
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Best time to book a flight from Seattle to Brussels

Have a flexible travel schedule? Discover the best time to fly to Brussels 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.

Travel insights for flights from Seattle to Brussels

Get recent, data-driven insights about flights from Seattle to Brussels including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Brussels?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Brussels. Price data was last updated on December 13, 2024.

The price you pay for your flight from Seattle to Brussels may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Brussels?

Currently, November is the cheapest month in which you can book a flight from Seattle to Brussels (average of $614). Flying from Seattle to Brussels in June is currently the most expensive (average of $1,146). 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 SEA to BRU?

Find hourly flight availability from Seattle 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 December 18, 2024.

It’s optimal to fly from Seattle to Brussels in the morning. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Seattle to Brussels?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Brussels. Price data was last updated on May 12, 2024.

Travelers seeking maximum savings on their Seattle to Brussels flight should consider departing on Sunday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Brussels by month

Plan your trip to Brussels by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Brussels ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. August is typically the driest time to visit Brussels when rainfall is around 1.6 in.

Temperature in Brussels by month

Plan your trip to Brussels by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Brussels, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 37.4 F).

Reviews of airlines servicing Brussels

Get insights into the airlines that provide service to Brussels. 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 Brussels. Reviews last updated December 18, 2024.
Read reviews from past customers who have flown KLM, Air Canada and British Airways from Seattle to Brussels. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,606 reviews
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,055 reviews
Delta
8.0
Very good
8,604 reviews

Entertainment

7.9

Comfort

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.6

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Brussels. 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?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Brussels. On average, Seattle/Tacoma Intl has 0 outbound flights to Brussels per day from 10 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    Icelandair, at $412, was found to be the cheapest airline from Seattle to Brussels.Alternate airlines to your destination round-trip include Air Canada and United Airlines. Users have found that Icelandair is 41% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $395. However, be on the lookout for offers from Icelandair and TAP AIR PORTUGAL, as they are both options that can get you from Seattle to Brussels for a low price.

  • Can I find deals for flights from Seattle to Brussels that include hotel bookings?

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

  • How can I find direct flights from Seattle to Brussels?

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

  • Can I find deals for business class flights from Seattle to Brussels?

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Brussels?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Brussels (average of $614). Flying from Seattle to Brussels in June is currently the most expensive (average of $1,146). 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 Seattle to Brussels

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

Top 10 airlines flying from Seattle to Brussels

Discover the top 10 airlines that operate flights from Seattle 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$571FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$501Average$674FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$637FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$526Average$689FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$529Average$624FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$534Average$823FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$535Average$717FlexibilityNo cancel feeOn-time75%
DeltaCheapest$561Average$846FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$570Average$778FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$571Average$849FlexibilityNo cancel feeOn-time77%
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