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$309+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
Nov 25 — Dec 21
Mon 11/25
Mon 12/2
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Brussels are usually found in February or November, booked 43 days in advance, depart on a Tuesday or Sunday and return on a Friday

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 November 20, 2024.

Popular in

June

Cheapest in

February

Round-trip from

$409
(Mytrip)

One-way from

$309
(Kiwi.com)
High demand for flights, 35% potential price rise
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Best time to find cheap flights, 19% potential price drop
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From Seattle/Tacoma Intl to Brussels
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One-way flight from Seattle/Tacoma Intl to Brussels
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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 November 20, 2024.

This Gotogate deal was found by Cheapflights users on 11/20. 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 12/52:35 pmSEA - BRU
1 stop12h 20mIcelandair
Thu 12/1212:50 pmBRU - SEA
1 stop13h 10mIcelandair
Deal found 11/20$578
This Air Canada deal was found by Cheapflights users on 11/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/45:45 amSEA - BRU
2 stops17h 10mAir Canada
Thu 12/1210:00 amBRU - SEA
2 stops37h 25mAir Canada
Deal found 11/19$596
This KLM deal was found by Cheapflights users on 11/20. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/47:10 amSEA - BRU
1 stop16h 50mKLM
Thu 12/1211:00 amBRU - SEA
1 stop20h 24mKLM
Deal found 11/20$610
This Virgin Atlantic deal was found by Cheapflights users on 11/19. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSEA - BRU
2 stops17h 55mVirgin Atlantic
Thu 12/1211:00 amBRU - SEA
1 stop18h 01mVirgin Atlantic
Deal found 11/19$615
This Flighttix deal was found by Cheapflights users on 11/19. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/56:05 amSEA - BRU
2 stops16h 50mMultiple Airlines
Thu 12/1211:55 amBRU - SEA
1 stop17h 25mMultiple Airlines
Deal found 11/19$621
This United Airlines deal was found by Cheapflights users on 11/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/55:15 amSEA - BRU
2 stops17h 40mUnited Airlines
Thu 12/1210:00 amBRU - SEA
2 stops44h 05mUnited Airlines
Deal found 11/19$638
This KAYAK deal was found by Cheapflights users on 11/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/146:15 amSEA - BRU
2 stops25h 40mScandinavian Airlines
Sun 1/128:30 pmBRU - SEA
2 stops34h 53mScandinavian Airlines
Deal found 11/19$802
This KAYAK deal was found by Cheapflights users on 11/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/133:10 pmSEA - BRU
1 stop12h 10mLufthansa
Sun 1/129:10 amBRU - SEA
1 stop13h 10mLufthansa
Deal found 11/19$959
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/177:15 amSEA - BRU
2 stops22h 00mDelta
Wed 1/110:45 amBRU - SEA
2 stops20h 39mDelta
Deal found 11/19$1,113
This lol.travel deal was found by Cheapflights users on 11/19. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/412:15 amSEA - BRU
2 stops24h 20mAer Lingus
Fri 12/1310:15 amBRU - SEA
1 stop17h 00mAer Lingus
Deal found 11/19$1,153
This British Airways deal was found by Cheapflights users on 11/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/306:50 pmSEA - BRU
1 stop12h 50mBritish Airways
Mon 1/65:35 pmBRU - SEA
2 stops35h 29mBritish Airways
Deal found 11/19$1,261
This FlightHub deal was found by Cheapflights users on 11/19. 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 FlightHub 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 1/16:10 pmBRU - SEA
1 stop31h 55mTurkish Airlines
Deal found 11/19$1,450

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 2,629,791 searches. Data last updated November 20, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 1/9

2:35 pm-11:55 am

1 stop12h 20m

Brussels Bruxelles-National

Thu 1/23

12:50 pm-5:00 pm

1 stop13h 10m

$409

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 2/17

6:05 am-7:55 am

2 stops40h 50m

Brussels Bruxelles-National

Mon 2/24

11:30 am-6:25 pm

2 stops39h 55m

$502

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 2/17

7:00 am-8:55 am

1 stop16h 55m

Brussels Bruxelles-National

Tue 2/25

10:10 am-10:42 pm

1 stop21h 32m

$512

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 2/17

6:50 pm-9:00 pm

1 stop17h 10m

Brussels Bruxelles-National

Mon 2/24

7:10 pm-7:05 pm

2 stops32h 55m

$520

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 2/18

1:35 pm-6:25 pm

2 stops19h 50m

Brussels Bruxelles-National

Mon 2/24

7:10 pm-7:05 pm

2 stops32h 55m

$526

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 2/16

6:50 pm-4:40 pm

1 stop12h 50m

Brussels Bruxelles-National

Mon 2/24

5:35 pm-11:20 am

1 stop26h 45m

$538

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 3/19

7:20 am-9:00 am

1 stop17h 40m

Brussels Bruxelles-National

Thu 3/27

6:15 am-10:25 pm

2 stops24h 10m

$543

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

10:15 am-5:55 pm

1 stop15h 40m

$582

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 3/20

3:00 pm-12:30 pm

1 stop13h 30m

Brussels Bruxelles-National

Fri 3/28

9:10 am-2:20 pm

1 stop13h 10m

$598

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 12/4

7:10 am-9:00 am

1 stop16h 50m

Brussels Bruxelles-National

Thu 12/12

11:00 am-10:24 pm

1 stop20h 24m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 26 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 November 15, 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 43 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 $566). Flying from Seattle to Brussels in June is currently the most expensive (average of $1,148). 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 November 20, 2024.

It’s optimal to fly from Seattle to Brussels in the morning. By choosing this option you can save up to 9% 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 November 20, 2024.
Read reviews from past customers who have flown Delta and Scandinavian Airlines 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
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
8,756 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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
9,171 reviews
Delta
8.0
Very good
8,756 reviews

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

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 $409, 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 42% 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 $394. However, be on the lookout for offers from Icelandair and Virgin Atlantic, 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 $566). Flying from Seattle to Brussels in June is currently the most expensive (average of $1,148). 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

Browse thousands of different options on Cheapflights for your next trip

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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 Antwerp flights
Portland to Charleroi Brussels 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 2,629,791 searches. Data last updated November 20, 2024.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$568FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$459Average$681FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$501Average$637FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$502Average$678FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$529Average$624FlexibilityNo cancel feeOn-time69%
KLMCheapest$542Average$718FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$544Average$837FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$561Average$855FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$571Average$848FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$594Average$765FlexibilityNo cancel feeOn-time76%
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