Cheap flights from Seattle to Brussels International

Compare Seattle to Brussels International flight deals

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

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Flight deals from Seattle to Brussels International

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Brussels International Airport? If you want to travel next month, round-trip fares start from $705. Find the lowest prices on one-way and round-trip tickets right here.

Brussels.$624 per passenger.Departing Fri, Apr 24, returning Thu, May 7.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Fri, Apr 24, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Thu, May 7, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $624, select.

Brussels.$641 per passenger.Departing Sun, Oct 4, returning Wed, Oct 21.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Sun, Oct 4, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Wed, Oct 21, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $641, select.

Brussels.$676 per passenger.Departing Wed, Sep 30, returning Wed, Oct 7.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Wed, Sep 30, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Wed, Oct 7, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $676, select.

Brussels.$681 per passenger.Departing Wed, Sep 2, returning Mon, Sep 14.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Wed, Sep 2, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Mon, Sep 14, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $681, select.

Brussels.$685 per passenger.Departing Thu, Apr 16, returning Thu, Apr 23.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Thu, Apr 16, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Thu, Apr 23, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $685, select.

Brussels.$700 per passenger.Departing Sat, Aug 1, returning Wed, Sep 2.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Sat, Aug 1, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Wed, Sep 2, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $700, select.

Brussels.$705 per passenger.Departing Mon, May 4, returning Sat, May 16.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Mon, May 4, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Sat, May 16, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $705, select.

Brussels.$861 per passenger.Departing Wed, Nov 25, returning Wed, Jan 6.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Seattle / Tacoma International on Wed, Nov 25, arriving in Brussels International.Inbound indirect flight with British Airways, departing from Brussels International on Wed, Jan 6, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $861, select.

Brussels.$862 per passenger.Departing Thu, Jul 30, returning Sat, Aug 29.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Thu, Jul 30, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Sat, Aug 29, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $862, select.

Brussels.$894 per passenger.Departing Mon, Jul 27, returning Tue, Sep 1.Round-trip flight with British Airways.Outbound indirect flight with British Airways, departing from Seattle / Tacoma International on Mon, Jul 27, arriving in Brussels International.Inbound indirect flight with British Airways, departing from Brussels International on Tue, Sep 1, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $894, select.

Brussels.$903 per passenger.Departing Sat, Aug 1, returning Sun, Aug 30.Round-trip flight with Turkish Airlines.Outbound indirect flight with Turkish Airlines, departing from Seattle / Tacoma International on Sat, Aug 1, arriving in Brussels International.Inbound indirect flight with Turkish Airlines, departing from Brussels International on Sun, Aug 30, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $903, select.

Brussels.$957 per passenger.Departing Mon, Jun 1, returning Mon, Jun 8.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Mon, Jun 1, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Mon, Jun 8, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $957, select.

Brussels.$957 per passenger.Departing Wed, May 27, returning Wed, Jun 3.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Wed, May 27, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Wed, Jun 3, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $957, select.

Brussels.$1,067 per passenger.Departing Wed, Jul 8, returning Wed, Jul 15.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Wed, Jul 8, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Wed, Jul 15, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,067, select.

Brussels.$1,207 per passenger.Departing Tue, May 19, returning Tue, Aug 11.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Seattle / Tacoma International on Tue, May 19, arriving in Brussels International.Inbound indirect flight with Lufthansa, departing from Brussels International on Tue, Aug 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,207, select.

Brussels.$1,277 per passenger.Departing Wed, Jun 24, returning Wed, Jul 1.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Seattle / Tacoma International on Wed, Jun 24, arriving in Brussels International.Inbound indirect flight with Icelandair, departing from Brussels International on Wed, Jul 1, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,277, select.

Find the cheapest month to fly from Seattle to Brussels International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Brussels International flights are currently cheapest in October.

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Seattle to Brussels International: Alternative routes

Compare routes from Seattle to Brussels below. You may find an airport to fly into that's cheaper, faster, or easier than Brussels International.

Seattle to Brussels: Flight information

The things to know before you go.

Cheapest flight found	$286
Cheapest month to fly	April

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

How much are round-trip flights from Seattle to Brussels International?

The best price we found for a round-trip flight from Seattle to Brussels International is $624. 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.

Which airlines fly direct from Seattle to Brussels International?

Currently, there are no airlines that fly direct from Seattle to Brussels International. But we found flights with one stop from $624.

How many flights are there a week from Seattle to Brussels International?

There are no flights flying from Seattle to Brussels International, as of April 2026.

When is the cheapest time to fly from Seattle to Brussels International?

The cheapest month to fly from Seattle to Brussels International is usually April.

Which upcoming date is cheapest to fly from Seattle to Brussels International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Brussels International Airport on Friday, April 24, 2026.

Can I get a direct flight from Seattle to Brussels International Airport?

No airlines currently offer direct flights between Seattle and Brussels International Airport. Most routes have one or more stops.

How can I find the best flight deal to Brussels International?

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 International 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.

When is the best time to book flights to Brussels?

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.

Which is the cheapest airline to fly with from Seattle to Brussels International?

The cheapest airline that flies to Brussels International is Icelandair.

Traveling from Seattle to Brussels Airport (BRU): What you need to know

Lay the groundwork for your adventure by working out where you'll catch your flight from Seattle to Brussels Airport (BRU). Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base Airport (LKE) are the main airports in Seattle.
The timezone in Brussels is UTC+1, which is eight hours ahead of Seattle. Brussels Airport is located in Brussels.
Arrive at the airport on time so you don't miss your flight from Seattle to BRU. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.
With more people on the move during peak seasons, you'll want to get to your terminal earlier than usual. Two hours for domestic flights and up to four for international journeys will help you stay ahead of the crowds.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

We make it easy to find cheap flights from Seattle to BRU with a stopover. To explore the options departing from Seattle-Tacoma International Airport (SEA), deselect 'Direct flights only.' Next, choose a flight with a stop long enough to tour your chosen city. Top stopovers between SEA and BRU include:
- London Heathrow Airport (LHR)
- Charles de Gaulle Airport (CDG)
- Keflavik International Airport (KEF)
Located around 23 kilometers from central Seattle, SEA can be reached in about 20 minutes by car (depending on traffic). The journey on public transport will take roughly 55 minutes.
Booked an early flight from Seattle to Brussels Airport? Avoid rushing to the terminal (and enjoy a little extra shut-eye) by choosing one of these stays close to Seattle-Tacoma International Airport:
Seattle-Tacoma International Airport scores top marks for its on-time performance. 81.27% of flights that depart SEA arrive at their destination on time.

Lake Union Sea Plane Base Airport (LKE)

You can reach LKE from central Seattle in approximately 10 minutes by car (depending on traffic). The journey by public transport takes roughly 25 minutes to travel the 3 kilometers or so.
Got a crack-of-dawn departure? Think about checking in to one of these hotels near Lake Union Sea Plane Base Airport the day before your Seattle to BRU flight:

About Brussels Airport (BRU)

Consider staying in a hotel close to BRU if you have a late flight from Seattle to Brussels Airport. Check in to one of these accommodation options and call it a night faster:
Grab a Brussels Airport rental car and discover Brussels and beyond with your own wheels. Keddy By Europcar, Alamo and Europcar are top providers you can book with here.
Lock in the lowest price by reserving your vehicle around three weeks before your Seattle to Brussels Airport flight.

Getting from Brussels Airport (BRU) to central Brussels

Central Brussels is roughly 8 kilometers from Brussels Airport. Journey times by car rental or cab will vary based on traffic conditions, so do a little research ahead of time.
If you're using public transport, expect a journey time of roughly 40 minutes.

How to find the cheapest flights from Seattle to Brussels Airport (BRU)

The lowest price we've found for a one-way ticket from Seattle to Brussels Airport is $286. For a return flight on this route, the best price is $624. Depending on when and how early you book, these fares may change.
Don't leave everything to the last moment. You're more likely to find cheap flights from Seattle to BRU if you book in advance. Airlines often have some excellent early bird discounts.
Affordable Seattle to Brussels Airport tickets are easier to find when you have flexibility in your schedule. Use the 'Whole month' tool to compare fares throughout the month and then pick the cheapest day.
There's no need to search every day to find out if fares have dropped when you create a Price Alert. We'll notify you the moment a new deal shows up on plane tickets from Seattle to BRU.
Filters make it easier to dig up a deal for your flight from Seattle to Brussels Airport. Pick the departure times, airlines and number of stops that look good to you. Then sort the results by 'Cheapest' to find the best price quickly.

The best time to fly from Seattle to Brussels Airport (BRU)

It's time to decide when to book your flight from Seattle to Brussels Airport (BRU). July is the busiest month to visit Brussels. If crowds aren't your thing, go in February.
Before locking in your Seattle to BRU plane ticket, consider what kind of weather works for you. August is the warmest month in Brussels, with temperatures ranging from 12ºC (54ºF) to 27ºC (81ºF).
January has temperatures of between -2ºC (28ºF) and 8ºC (46ºF). Look for cheap tickets from Seattle to Brussels Airport around that time if you want to travel when it's cooler.

More about Brussels

Start your Brussels trip right by choosing the perfect place to stay. After booking your flight from Seattle to Brussels Airport, explore our range of hotels including:
Every great adventure has to include a little sightseeing. Brussels Christmas Market, Grand Place and Atomium are attractions you won't want to skip in Brussels.

Explore more of Belgium

Brussels is easy to fall in love with, but there are so many other parts of Belgium just waiting to be discovered. About 113 kilometers west of Brussels, a trip to Ostend will keep you busy. Start with popular sights like Belgian Coast, Church of Saint Peter and Saint Paul and The Crystal Ship.
Verviers is another sought-after destination in Belgium and is around 105 kilometers east of Brussels. No trip is complete without visiting La Chocolaterie Darcis, Parc Peltzer and Plan d'eau des Clarisses.