$289 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 10/16. 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.
Round-trip
1 adult
Economy
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
...and more
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 42,686,544 times on KAYAK, and here is why:
Cheap flight deals from Seattle to Brussels (SEA-BRU)
These are the cheapest deals for flights from Seattle to Brussels currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Recent round-trip flight deals from Seattle to Brussels
Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Brussels.
Recent one-way flight deals from Seattle to Brussels
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Brussels found on KAYAK recently.
Recent last minute flight deals from Seattle to Brussels
Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Seattle to Brussels.
Recent direct flight deals from Seattle to Brussels
The latest deals for direct flights from Seattle to Brussels so you can sit back and relax without the need for a layover.
Cheap bus & train deals from Seattle to Brussels
Find recent round-trip train or bus tickets from Seattle to Brussels.
All round-trip flight deals to Brussels
The cheapest plane tickets to Brussels found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
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 $1,358 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 ($291) and United Airlines ($475), and the lowest round-trip tickets were found on British Airways ($445) and Finnair ($446).
Good to know
Cheapest flight | $289 |
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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
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.
10/16Wed
3 stops
35h 19mSEA-CRL
$289
8/4Sun
1 stopIcelandair
28h 50mSEA-BRU
$291
10/16Wed
2 stops
19h 35mSEA-BRU
$364
10/16Wed
1 stop
15h 45mSEA-BRU
$395
8/4Sun
2 stops
32h 00mSEA-CRL
$411
10/16Wed
3 stopsUnited Airlines
20h 55mSEA-BRU
$475
9/28Sat
2 stopsBritish Airways
34h 16mSEA-BRU
$514
9/28Sat
1 stopKLM
24h 50mSEA-BRU
$544
8/3Sat
2 stopsUnited Airlines
21h 45mSEA-BRU
$559
6/25Tue
2 stopsAmerican Airlines
27h 51mSEA-BRU
$3,193