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Cheap Flights from Seattle / Tacoma International to Brussels

Compare Seattle / Tacoma International to Brussels flight deals

Find the cheapest month or even day of the year to fly to Brussels

Book the best Brussels fare with no extra fees

Flight deals from Seattle / Tacoma International to Brussels

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International to Brussels? Find the lowest prices on one-way and return tickets right here.
Brussels.418 € per passenger.Departing Thu, 16 Oct, returning Thu, 23 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Thu, 16 Oct, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Thu, 23 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 418 €, select.
Brussels.456 € per passenger.Departing Wed, 7 May, returning Wed, 14 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Wed, 7 May, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Wed, 14 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 456 €, select.
Brussels.475 € per passenger.Departing Wed, 3 Sep, returning Wed, 10 Sep.Return flight with Air France.Outbound indirect flight with Air France, departs from Seattle / Tacoma International on Wed, 3 Sep, arriving in Brussels International.Inbound indirect flight with Air France, departs from Brussels International on Wed, 10 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 475 €, select.
Brussels.490 € per passenger.Departing Mon, 18 Aug, returning Mon, 25 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Mon, 18 Aug, arriving in Brussels International.Inbound indirect flight with Air Canada, departs from Brussels International on Mon, 25 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 490 €, select.
Brussels.495 € per passenger.Departing Mon, 19 May, returning Tue, 3 Jun.Return flight with Air France.Outbound indirect flight with Air France, departs from Seattle / Tacoma International on Mon, 19 May, arriving in Brussels International.Inbound indirect flight with Air France, departs from Brussels International on Tue, 3 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 495 €, select.
Brussels.495 € per passenger.Departing Tue, 3 Jun, returning Wed, 11 Jun.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 3 Jun, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Wed, 11 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 495 €, select.
Brussels.498 € per passenger.Departing Sat, 30 Aug, returning Sun, 21 Sep.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sat, 30 Aug, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Sun, 21 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 498 €, select.
Brussels.503 € per passenger.Departing Sat, 26 Apr, returning Tue, 27 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Sat, 26 Apr, arriving in Brussels International.Inbound indirect flight with Delta, departs from Brussels International on Tue, 27 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From 503 €, select.

Find the cheapest month to fly from Seattle / Tacoma International to Brussels

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Brussels flights are currently cheapest in October.
Apr
from 772 €
May
from 456 €
Jun
from 495 €
Jul
from 691 €
Aug
from 490 €
Sep
from 475 €
Oct
from 418 €
Nov
Find prices
Dec
from 796 €
Jan
Find prices
Feb
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Mar
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Alternative Seattle / Tacoma International to Brussels routes

Looking for the cheapest, fastest or easiest route from Seattle / Tacoma International to Brussels? You could fly into the following airports instead.

Seattle to Brussels: Flight information

The things to know before you go.
Cheapest flight found418 €
Cheapest month to flyOctober

Finding cheap flights from Seattle / Tacoma International to Brussels: Frequently asked questions

There are 5 airports in Brussels: Brussels International, Antwerp Deurne, Brussels S. Charleroi, Liege, and Kortrijk.
The best price we found for a return flight from Seattle / Tacoma International to Brussels is 418 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle / Tacoma International to Brussels. But we found flights with one or more stops from 418 €.
As of April 2025, there are no flights flying from Seattle / Tacoma International to Brussels.
The cheapest month to fly from Seattle / Tacoma International to Brussels is usually April 2025.
If you're flying from Seattle / Tacoma International Airport, the cheapest airport near Brussels is Brussels International – which is 11.0 km away from the centre of Brussels. We've found flights into this airport from 418 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Brussels on Thursday, 16 October 2025.
No airlines currently offer direct flights between Seattle / Tacoma International Airport and Brussels. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Brussels but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Brussels is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 9°C. July is typically the warmest month in Brussels, when it usually averages around 22°C. You can expect the least rain in April. The coldest month is January, with temperatures averaging -0°C. The rainiest month is December.
Currently, Icelandair offers the cheapest flight tickets to Brussels.

Travelling from Seattle-Tacoma International Airport (SEA) to Brussels: what you need to know

  • Seattle-Tacoma International Airport is located in Seattle. Based in the UTC+1 timezone, Brussels is 8 hours ahead of Seattle.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This way, you can comfortably catch your flight from SEA to Brussels.

  • Peak months like July or high seasons such as Thanksgiving and Christmas/New Year will mean bigger waits at check-in and security. Travelling then? Play it safe and head to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of an international flight is wise.

  • We make it simple to find a flight from SEA to Brussels that includes a stopover. To see all your options, deselect 'Direct flights only.' Then, simply select a flight offering a stop long enough to explore your chosen city. Popular stopovers include:

    • Helsinki-Vantaa Airport (HEL)

    • Dublin Airport (DUB)

    • London Heathrow Airport (LHR)

  • If you hold a passport from United States and want to travel to Belgium for tourism purposes, you won't need a visa. However, visa and entry requirements may vary based on the reason for your trip and can be subject to change. For the most up-to-date information, contact your destination's nearest consulate or embassy before reserving a cheap ticket from Seattle-Tacoma International Airport to Brussels.

  • SEA is around 23 kilometres from central Seattle. If you're ride-sharing, catching a cab or driving from the centre, it'll take 18 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the journey time to be approximately 54 minutes.

  • Catching an early flight from Seattle-Tacoma International Airport to Brussels? Avoid the hassle of rushing to the airport (and catch some extra z's) by picking one of these hotels close to SEA:

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Brussels

  • 200 € is the lowest price for a one-way ticket from Seattle-Tacoma International Airport to Brussels. Return flights start from 418 €. These fares can change based on demand and availability.

  • To pick up cheap tickets from SEA to Brussels, book ahead. Airlines generally offer their most competitively priced fares when flights are first made available.

  • Finding cheap tickets from Seattle-Tacoma International Airport to Brussels is more likely if you're flexible with your dates. Check out the 'Whole month' function to see the best prices throughout the month and bag a great deal.

  • Locking in a cheap ticket from SEA to Brussels is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you as soon as the price has dropped.

  • Use the filters to tailor your flights from Seattle-Tacoma International Airport to Brussels. Simply enter your preferred arrival and departure times, airlines and number of stops. Or sort your results by 'Cheapest' to get the best deals.

Airports in Brussels

Brussels Airport (BRU)

  • Brussels Airport (BRU) to the centre of Brussels takes around 21 minutes by car. It's approximately 14 kilometres away.

  • If you're travelling on public transport, expect a journey time of about 39 minutes.

  • If you're coming in on a late flight from Seattle-Tacoma International Airport to Brussels, nothing beats the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near BRU:

Brussels S. Charleroi Airport (CRL)

  • Brussels S. Charleroi Airport (CRL) is about 56 kilometres from central Brussels. Once you've disembarked your flight from Seattle-Tacoma International Airport to Brussels, it'll take you around 56 minutes to reach the heart of the city in a cab or ride-share.

  • You can also opt for public transport, which will take about 1 hour and 37 minutes.

  • After your flight from SEA to Brussels, rest your head at a hotel near CRL. These are some comfortable options that'll help you slip into relaxation mode:

Best time to go to Brussels

  • It's time to pick your dates for your flight from Seattle-Tacoma International Airport to Brussels. July is the busiest month to travel to Brussels. If you like a quieter atmosphere, go in February.

  • Before booking a flight from Seattle-Tacoma International Airport to Brussels, think about the type of weather you enjoy. August is the warmest month in Brussels, with the temperature ranging from 12ºC to 27ºC.

  • For cooler conditions, search for a cheap flight from SEA to Brussels in January when temperatures average between -2ºC and 8ºC.

More about Brussels

  • When it comes to searching for somewhere to lay your head, you'll find the top stays in Brussels right here. Browse these hotels as soon as you've booked your flight from Seattle-Tacoma International Airport to Brussels:

  • All great adventures should include a little sightseeing. Grand Place, Atomium and Manneken Pis are essential stops on your Brussels itinerary.

Complete your Brussels trip with a car rental

  • Finding you a cheap flight from Seattle-Tacoma International Airport to Brussels isn't the only thing we're good at. Check out our car rentals in Brussels and explore at your own pace. We search for deals from trusted car rental companies and put them all in one place. Instantly compare offers and then book with no fees.

Plan the rest of your trip from Seattle to Brussels

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.