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Belgium

$189+ Cheap flights from Seattle (SEA) to Belgium

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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BRU
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Seattle to Belgium

Keep the following information in mind while searching for Seattle to Belgium flight deals. Data was last updated April 30, 2025.

Round-trip from

$550
(Mytrip)

One-way from

$189
(Vakatrip)

Popular in

June

Cheapest in

February

Average price

$634
From Seattle/Tacoma Intl to Belgium
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One-way flight from Seattle/Tacoma Intl to Belgium
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Highest demand for flights based on searches. 17% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Belgium

Cheapest flights from Seattle to Belgium
Explore the most affordable flight options available from Seattle to Belgium. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This oojo deal was found by Cheapflights users on 4/29. 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.
Thu 9/113:45 pmSEA - BRU
1 stop12h 05mIcelandair
Thu 9/181:50 pmBRU - SEA
1 stop15h 50mIcelandair
Deal found 4/29$475
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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.
Sun 8/314:00 pmSEA - BRU
2 stops19h 35mScandinavian Airlines
Sun 9/79:20 pmBRU - SEA
2 stops25h 30mScandinavian Airlines
Deal found 4/29$480
This Mytrip deal was found by Cheapflights users on 4/28. 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 9/312:10 pmSEA - BRU
2 stops16h 05mMultiple Airlines
Tue 9/309:40 amBRU - SEA
2 stops21h 36mMultiple Airlines
Deal found 4/28$547
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 12/233:10 pmSEA - BRU
1 stop12h 50mUnited Airlines
Fri 1/911:55 amBRU - SEA
1 stop17h 15mUnited Airlines
Deal found 4/28$562
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Mon 9/12:55 pmSEA - BRU
2 stops32h 10mLufthansa
Wed 9/1010:00 amBRU - SEA
2 stops17h 36mLufthansa
Deal found 4/28$564
This American Airlines deal was found by Cheapflights users on 4/28. 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 9/2210:46 amSEA - BRU
2 stops18h 34mAmerican Airlines
Mon 9/293:00 pmBRU - SEA
1 stop29h 10mAmerican Airlines
Deal found 4/28$584
This Travelocity deal was found by Cheapflights users on 4/28. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/237:30 amSEA - BRU
2 stops17h 40mAir Canada
Fri 1/99:45 amBRU - SEA
2 stops21h 11mAir Canada
Deal found 4/28$588
This oojo deal was found by Cheapflights users on 4/28. 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.
Mon 9/2210:46 amSEA - BRU
2 stops18h 34mBritish Airways
Mon 9/299:15 pmBRU - SEA
2 stops28h 42mBritish Airways
Deal found 4/28$594
This Delta deal was found by Cheapflights users on 4/28. 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 9/3012:40 amSEA - BRU
2 stops21h 50mDelta
Wed 10/2210:45 amBRU - SEA
1 stop20h 40mDelta
Deal found 4/28$596
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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.
Tue 4/2910:59 pmSEA - BRU
1 stop24h 41mVirgin Atlantic
Thu 5/2910:45 amBRU - SEA
2 stops22h 02mVirgin Atlantic
Deal found 4/29$663
This KLM deal was found by Cheapflights users on 4/28. 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.
Mon 5/56:07 pmSEA - BRU
1 stop11h 28mKLM
Fri 5/3010:25 amBRU - SEA
1 stop14h 32mKLM
Deal found 4/28$695
This SWISS deal was found by Cheapflights users on 4/29. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/94:25 pmSEA - BRU
1 stop31h 25mSWISS
Mon 6/166:00 pmBRU - SEA
2 stops33h 33mSWISS
Deal found 4/29$851

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Belgium 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 April 30, 2025.
Use the filters below to find and compare flights from Seattle to Belgium that are best for you.

Fly from

Seattle

Fly to

Belgium

Route

Depart

Return

Price

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Thu 9/11

3:45 pm-12:50 pm

1 stop12h 05m

Brussels Bruxelles-National

Thu 9/18

1:50 pm-8:40 pm

1 stop15h 50m

$475

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Sun 8/31

4:00 pm-8:35 pm

2 stops19h 35m

Brussels Bruxelles-National

Sun 9/7

9:20 pm-1:50 pm

2 stops25h 30m

$480

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 9/3

12:10 pm-1:15 pm

2 stops16h 05m

Brussels Bruxelles-National

Tue 9/30

9:40 am-10:16 pm

2 stops21h 36m

$547

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/1

2:55 pm-8:05 am

2 stops32h 10m

Brussels Bruxelles-National

Wed 9/10

10:00 am-6:36 pm

2 stops17h 36m

$564

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/22

10:46 am-2:20 pm

2 stops18h 34m

Brussels Bruxelles-National

Mon 9/29

3:00 pm-11:10 am

1 stop29h 10m

$584

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Wed 10/1

7:20 am-9:45 am

2 stops41h 25m

Brussels Bruxelles-National

Wed 10/15

10:00 am-3:31 pm

2 stops38h 31m

$591

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 9/22

10:46 am-2:20 pm

2 stops18h 34m

Brussels Bruxelles-National

Mon 9/29

9:15 pm-4:57 pm

2 stops28h 42m

$594

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Tue 9/30

12:40 am-7:30 am

2 stops21h 50m

Brussels Bruxelles-National

Wed 10/22

10:45 am-10:25 pm

1 stop20h 40m

$596

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Fri 8/22

7:20 am-8:00 am

1 stop15h 40m

Brussels Bruxelles-National

Tue 9/9

10:00 am-7:31 pm

1 stop18h 31m

$615

SeattleBrussels

SEA - BRU

SEABRU

Seattle/Tacoma Intl

Mon 5/26

7:16 am-8:40 am

1 stop16h 24m

Brussels Bruxelles-National

Mon 6/2

10:45 am-10:43 pm

1 stop20h 58m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 21 results
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Best time to book a flight from Seattle to Belgium

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

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

Currently, November is the cheapest month in which you can book a flight from Seattle to Belgium (average of $614). Flying from Seattle to Belgium in June is currently the most expensive (average of $1,127). 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 BE?

Find hourly flight availability from Seattle to Belgium. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Belgium as you normally would.

Rainfall in Belgium by month

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

In terms of precipitation, rainfall in Belgium 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 Belgium when rainfall is around 1.6 in.

Temperature in Belgium by month

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

If weather is an important factor for your trip to Belgium, 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 Belgium

Get insights into the airlines that provide service to Belgium. 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 Belgium. Reviews last updated April 30, 2025.
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 Belgium. 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 Belgium?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Belgium.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $189. However, be on the lookout for offers from Aer Lingus and Air Canada, as they are both options that can get you from Seattle to Belgium for a low price.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Seattle to Belgium (average of $614). Flying from Seattle to Belgium in June is currently the most expensive (average of $1,127). 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 Belgium

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Top 10 airlines flying from Seattle to Belgium

Discover the top 10 airlines that operate flights from Seattle to Belgium. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$537FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$495Average$670FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$501Average$583FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$529Average$665FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$532Average$544FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$532Average$679FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$543Average$724FlexibilityNo cancel feeOn-time67%
DeltaCheapest$549Average$772FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$554Average$731FlexibilityNo cancel feeOn-time77%
FinnairCheapest$572Average$787FlexibilityNo cancel feeOn-time76%

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