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$261 Find cheap flights from Seattle to Brussels

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Brussels departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Thu 7/11
Thu 7/18

Search hundreds of travel sites at once for deals on flights to Brussels

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Brussels, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Brussels, as well as popular online travel agencies
In the last 7 days travelers have searched 44,212,782 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Brussels (SEA-BRU)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Brussels that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:50 am - 8:10 amSEA-BRU
17h 20m2 stops
10:00 am - 9:14 pmBRU-SEA
20h 14m1 stop
$418Air Canada
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Tue, Oct 22 - Thu, Feb 13
5:00 am - 8:10 amSEA-BRU
18h 10m2 stops
10:00 am - 9:14 pmBRU-SEA
20h 14m1 stop
$422
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Wed, Oct 23 - Wed, Feb 12
6:45 am - 9:00 amSEA-BRU
17h 15m2 stops
10:10 am - 6:59 pmBRU-SEA
17h 49m1 stop
$433United Airlines
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Wed, Oct 23 - Thu, Feb 13
6:39 am - 7:55 amSEA-BRU
17h 16m2 stops
10:10 am - 6:59 pmBRU-SEA
17h 49m1 stop
$453United Airlines
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Wed, Oct 30 - Fri, Feb 14
7:45 pm - 9:25 amSEA-BRU
29h 40m2 stops
11:20 am - 10:36 pmBRU-SEA
20h 16m2 stops
$489Finnair
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Sun, Oct 27 - Tue, Feb 11
7:45 pm - 9:25 amSEA-BRU
29h 40m2 stops
7:10 pm - 7:02 pmBRU-SEA
32h 52m2 stops
$490Finnair
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Sun, Oct 27 - Mon, Feb 10
7:40 pm - 7:05 pmSEA-BRU
14h 25m1 stop
5:30 pm - 11:25 amBRU-SEA
26h 55m1 stop
$496British Airways
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Fri, Oct 25 - Mon, Feb 10
3:35 pm - 11:55 amSEA-BRU
12h 20m1 stop
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
$506Icelandair
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Thu, Oct 31 - Sun, Feb 16
3:50 pm - 12:50 pmSEA-BRU
12h 00m1 stop
12:50 pm - 5:00 pmBRU-SEA
13h 10m1 stop
$526Icelandair
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Fri, Oct 25 - Sun, Feb 9
7:40 pm - 6:50 pmSEA-BRU
14h 10m1 stop
11:55 am - 4:45 pmBRU-SEA
13h 50m1 stop
$546British Airways
Find Deal
Thu, Oct 24 - Sat, Feb 15

Flights from Seattle to Brussels - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Brussels to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from Seattle to Brussels clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Brussels on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from Seattle to Brussels. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Brussels, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Brussels is January, where tickets cost $575 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,354 and $1,020 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Brussels, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Brussels, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 67 days before departure.

Which airlines provide the cheapest flights from Seattle to Brussels?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Brussels from Seattle were found on Icelandair ($261) and United Airlines ($504), and the lowest round-trip tickets were found on Air Canada ($418) and United Airlines ($433).

Good to know

Cheapest flight

$261
Flight from Seattle to Brussels 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Brussels

  • What is the cheapest flight from Seattle to Brussels?

    In the last 3 days, the lowest price for a flight from Seattle to Brussels was $261 for a one-way ticket and $418 for a round-trip.

  • Do I need a passport to fly between Seattle and Brussels?

    Yes, you’ll need a passport to travel to Brussels from Seattle.

  • Which airports will I be using when flying from Seattle to Brussels?

    Seattle is served by only 1 airport and there are 2 airports in Brussels. You will leave Seattle from Seattle/Tacoma Intl and you will be arriving in Brussels at one of these airports: Brussels Bruxelles-National or Charleroi Brussels.

  • Which aircraft models fly most regularly from Seattle to Brussels?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Brussels?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Brussels, with oneworld being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Seattle to Brussels?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Brussels.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Brussels?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brussels from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Brussels?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brussels with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Brussels?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brussels from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Seattle to Brussels

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Brussels found on KAYAK in the last 72 hours.
8/10Sat
1 stopIcelandair
28h 50mSEA-BRU
$261
10/6Sun
2 stops
18h 50mSEA-CRL
$317
7/8Mon
2 stops
49h 10mSEA-CRL
$385
8/10Sat
3 stops
39h 55mSEA-CRL
$398
7/7Sun
2 stopsUnited Airlines
21h 45mSEA-BRU
$504
8/9Fri
2 stopsUnited Airlines
21h 45mSEA-BRU
$604
6/23Sun
2 stopsAir Canada
26h 15mSEA-BRU
$662
6/29Sat
2 stopsAmerican Airlines
33h 01mSEA-BRU
$665
6/16Sun
1 stopLufthansa
16h 15mSEA-BRU
$681
6/15Sat
2 stopsAmerican Airlines
33h 01mSEA-BRU
$3,130

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Last minute flights from Seattle to Brussels

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Brussels that are departing in the next 10 days.
6/16Sun
multi-stopAmerican Airlines
28h 01mSEA-BRU
8/30Fri
multi-stopAmerican Airlines
21h 44mBRU-SEA
$940
6/15Sat
multi-stop
18h 26mSEA-BRU
6/27Thu
multi-stop
20h 47mBRU-SEA
$1,180
6/15Sat
multi-stop
20h 20mSEA-BRU
6/27Thu
multi-stop
20h 47mBRU-SEA
$1,280
6/15Sat
multi-stop
20h 20mSEA-BRU
6/27Thu
multi-stop
17h 00mBRU-SEA
$1,378
6/15Sat
multi-stop
41h 20mSEA-BRU
6/27Thu
multi-stop
29h 02mBRU-SEA
$1,468
6/15Sat
multi-stop
27h 15mSEA-BRU
6/27Thu
multi-stop
29h 02mBRU-SEA
$1,568
6/16Sun
multi-stopAmerican Airlines
23h 51mSEA-BRU
6/18Tue
multi-stopAmerican Airlines
40h 52mBRU-SEA
$3,602
6/16Sun
multi-stopAmerican Airlines
23h 51mSEA-BRU
6/18Tue
multi-stopAmerican Airlines
29h 30mBRU-SEA
$3,766

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Seattle - Brussels Flights

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