$235 Find Cheap Flights from Seattle to Brussels - Compare and Save

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Everything you should know

Cheapest round-trip
$514
Typical prices: $513-$804
Icelandair
Fri 10/5Thu 10/18
SEA - BRU • 1 stop
Cheapest one-way
$226
Typical prices: $369-$586
Icelandair
Wed 10/17
SEA - BRU • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Seattle and Brussels. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
13 weeks
in advance
Our data shows that travelers who book at least 13 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
When to travel
February
Cheapest • 24% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
New York John F Kennedy Intl (JFK)
Cheapest • Avg $488 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 13h 31m (one-way)
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Insights
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We hope you love your trip to Brussels!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Brussels (SEA-BRU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Brussels

Mon, Oct 5 - Sun, Oct 18
Icelandair Logo
7:00 pm - 12:55 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
32h 55m1 stop Reykjavik Keflavik Intl
Icelandair Logo
1:50 pm - 8:40 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
15h 50m1 stop Reykjavik Keflavik Intl
$514Icelandair
Mon, Feb 8 - Tue, Feb 16
Icelandair Logo
2:35 pm - 11:55 amSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
12h 20m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:50 pm - 5:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 10m1 stop Reykjavik Keflavik Intl
$516Icelandair
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
6:50 pm - 9:15 pmSEA  Seattle/Tacoma Intl-CRL Charleroi Brussels
17h 25m2 stops Munich Franz Josef Strauss Stockholm Arlanda
Multiple Airlines Logo
9:00 pm - 6:32 pmCRL  Charleroi Brussels-SEA Seattle/Tacoma Intl
30h 32m3 stops Stockholm Arlanda Zurich Vancouver Intl
$554Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
Multiple Airlines Logo
8:00 am - 9:15 pmSEA  Seattle/Tacoma Intl-CRL Charleroi Brussels
28h 15m3 stops Toronto Pearson Intl Zurich Stockholm Arlanda
Multiple Airlines Logo
9:00 pm - 10:47 pmCRL  Charleroi Brussels-SEA Seattle/Tacoma Intl
34h 47m3 stops Stockholm Arlanda Zurich Vancouver Intl
$558Multiple Airlines
Wed, Nov 11 - Wed, Nov 18
Lufthansa Logo
2:50 pm - 4:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
16h 25m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$721Lufthansa
Tue, Nov 10 - Fri, Nov 27
British Airways Logo
6:45 pm - 5:05 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
13h 20m1 stop London Heathrow
British Airways Logo
11:35 am - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 15m1 stop London Heathrow
$721British Airways
Tue, Nov 3 - Tue, Nov 10
British Airways Logo
1:30 pm - 7:45 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
21h 15m1 stop London Heathrow
British Airways Logo
12:05 pm - 4:50 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
13h 45m1 stop London Heathrow
$721British Airways
Tue, Nov 17 - Tue, Dec 8
United Airlines Logo
12:45 pm - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
15h 30m2 stops Denver Intl London Heathrow
United Airlines Logo
11:55 am - 8:20 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
17h 25m1 stop Washington, D.C. Dulles Intl
$725United Airlines
Tue, Nov 3 - Tue, Nov 10
United Airlines Logo
7:00 am - 1:15 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
21h 15m2 stops Chicago O'Hare Intl London Heathrow
United Airlines Logo
10:10 am - 7:03 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
17h 53m1 stop Chicago O'Hare Intl
$725United Airlines
Wed, Feb 17 - Sat, Feb 27
Lufthansa Logo
2:50 pm - 5:10 pmSEA  Seattle/Tacoma Intl-BRU Brussels Bruxelles-National
17h 20m1 stop Munich Franz Josef Strauss
Lufthansa Logo
7:00 am - 12:00 pmBRU  Brussels Bruxelles-National-SEA Seattle/Tacoma Intl
14h 00m1 stop Frankfurt am Main
$766Lufthansa
Booking Insights

Price, demand and travel trends for Seattle to Brussels flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Seattle to Brussels with more confidence.

How much is a round-trip flight from Seattle to Brussels?

Round-trip flights from Seattle to Brussels start at $514. Prices are typical for this route right now, with typical round-trip fares ranging from $513 to $804. The lowest price found in the past 5 days was $514 on Icelandair.

What's the cheapest day of the week to fly from Seattle to Brussels?

Wednesday is the cheapest day of the week to fly from Seattle to Brussels, it is 23% cheaper than the average day. Friday is the most expensive day with flight prices 19% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • February is the cheapest month to fly from Seattle to Brussels at $501 round-trip.
  • June ($1,217) and December ($840) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 142% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Seattle to Brussels the cheapest?

Flights from Seattle to Brussels are cheapest 13 weeks before departure. Booking in this window typically costs about 46% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Seattle to Brussels flights

Low season

July

Cheapest flight

$226
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Seattle to Brussels Bruxelles-National Airport

When to book flights from Seattle to Brussels

Are your dates flexible? Find out the best times to travel from Seattle to Brussels based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Brussels flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Seattle to Brussels?

    Flights from Seattle to Brussels usually depart from Seattle/Tacoma Intl (SEA) and may arrive at several airports in Brussels area, including Brussels Bruxelles-National (BRU) and Charleroi Brussels (CRL).

  • What cabin classes can I book on flights from Seattle to Brussels?

    Three cabin classes are available on flights from Seattle to Brussels:

    • Economy Class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from Seattle to Brussels pass through?

    One-stop flights from Seattle to Brussels most commonly connect through:

    • Reykjavik Keflavik Intl (KEF) - 40% of one-stop connections
    • Amsterdam Schiphol (AMS) - 18% of one-stop connections
    • Frankfurt am Main (FRA) - 16% of one-stop connections
    • London Heathrow (LHR) - 9% of one-stop connections

    Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Seattle to Brussels?

    Yes. Being flexible with your travel dates can save you up to 35% on the Seattle to Brussels route. Wednesday is the cheapest departure day at $511 round-trip on average, while Friday is the most expensive at $786, a difference of $275. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Brussels?

    Some of the most popular sights in Brussels are Grand Place, Brussels Central Railway Station and Bruxelles-Midi Station. These are among the most viewed places in Brussels on KAYAK.

  • How expensive are last-minute Seattle to Brussels flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 43% above the route average of $659. Book 13 weeks before departure for the lowest fares.

  • How long is a flight from Seattle to Brussels?

    A nonstop flight from Seattle to Brussels takes 0h 00m, covering 4,941 miles.

  • Do I need a passport to fly from Seattle to Brussels?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Seattle to Brussels looking right now?

    One-way fares from Seattle to Brussels are currently lower than usual. Average one-way flight prices are about $367, which is 20% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Seattle to Brussels?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 13h 31m, compared with 13h 37m via Munich Franz Josef Strauss (MUC) and 13h 49m via Reykjavik Keflavik Intl (KEF).

  • What is the time difference between Seattle and Brussels?

    Brussels is 9 hours ahead of Seattle (Central European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available in Brussels?

    Since Brussels is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near Brussels Bruxelles-National Airport (BRU) — daily rates from around $20:

    · Hertz
    · Alamo
    · keddy by Europcar
    · Europcar
    · Sixt

    Near Charleroi Brussels Airport (CRL) — daily rates from around $22:

    · keddy by Europcar
    · Europcar
    · Hertz
    · Sixt
    · Thrifty

  • How much should I expect to pay for a Seattle to Brussels flight?

    Round-trip flights from Seattle to Brussels range from $513 to $804, with an average of $659 over the past 12 months. Anything below $513 counts as a good deal.

Your guide to booking Seattle to Brussels flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Friday. On this route, Wednesday flights average $511 - about $275 less than Friday (35% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 13 weeks before you fly. On this route, that window historically saves about 46% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Brussels trip for February. Fares historically average $501 round-trip in that month - typically $716 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Brussels Bruxelles-National Airport.
    - NH Brussels Airport
    - Crowne Plaza Brussels Airport By IHG

Everything you need to know for your flight from Seattle to Brussels

Information on your arrival and departure airports

Seattle (SEA)