Cheap Flights from Seattle / Tacoma International to Brussels

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Compare Seattle / Tacoma International to Brussels flight deals

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

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Flight deals from Seattle / Tacoma International to Brussels

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Brussels? If you want to travel next month, return fares start from $900. Find the lowest prices on one-way and return tickets right here.

Brussels.$854 per passenger.Departing Mon, 16 Nov, returning Tue, 24 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 16 Nov, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Tue, 24 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $854, select.

Brussels.$854 per passenger.Departing Mon, 7 Dec, returning Tue, 15 Dec.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 7 Dec, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Tue, 15 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $854, select.

Brussels.$862 per passenger.Departing Mon, 12 Apr, returning Fri, 23 Apr.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Mon, 12 Apr, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Fri, 23 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $862, select.

Brussels.$876 per passenger.Departing Fri, 23 Oct, returning Thu, 5 Nov.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Fri, 23 Oct, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Thu, 5 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $876, select.

Brussels.$897 per passenger.Departing Tue, 20 Oct, returning Tue, 27 Oct.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Tue, 20 Oct, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Tue, 27 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $897, select.

Brussels.$961 per passenger.Departing Sun, 28 Mar, returning Tue, 13 Apr.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sun, 28 Mar, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Tue, 13 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $961, select.

Brussels.$968 per passenger.Departing Sun, 18 Apr, returning Tue, 18 May.Return flight with Icelandair.Outbound indirect flight with Icelandair, departs from Seattle / Tacoma International on Sun, 18 Apr, arriving in Brussels International.Inbound indirect flight with Icelandair, departs from Brussels International on Tue, 18 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $968, select.

Brussels.$1,027 per passenger.Departing Sun, 29 Nov, returning Fri, 11 Dec.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Sun, 29 Nov, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Fri, 11 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,027, select.

Brussels.$1,052 per passenger.Departing Tue, 1 Dec, returning Mon, 1 Feb.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Tue, 1 Dec, arriving in Brussels International.Inbound indirect flight with Air Canada, departs from Brussels International on Mon, 1 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,052, select.

Brussels.$1,071 per passenger.Departing Mon, 10 May, returning Fri, 21 May.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Mon, 10 May, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Fri, 21 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,071, select.

Brussels.$1,072 per passenger.Departing Thu, 12 Nov, returning Tue, 27 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Thu, 12 Nov, arriving in Brussels International.Inbound indirect flight with Air Canada, departs from Brussels International on Tue, 27 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,072, select.

Brussels.$1,090 per passenger.Departing Wed, 11 Nov, returning Sat, 30 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Wed, 11 Nov, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Sat, 30 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,090, select.

Brussels.$1,102 per passenger.Departing Mon, 18 Jan, returning Fri, 29 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Seattle / Tacoma International on Mon, 18 Jan, arriving in Brussels International.Inbound indirect flight with Delta, departs from Brussels International on Fri, 29 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,102, select.

Brussels.$1,113 per passenger.Departing Tue, 29 Dec, returning Mon, 11 Jan.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Tue, 29 Dec, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Mon, 11 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,113, select.

Brussels.$1,162 per passenger.Departing Fri, 19 Feb, returning Mon, 8 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Fri, 19 Feb, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Mon, 8 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,162, select.

Brussels.$1,190 per passenger.Departing Thu, 4 Feb, returning Sat, 13 Feb.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Seattle / Tacoma International on Thu, 4 Feb, arriving in Brussels International.Inbound indirect flight with British Airways, departs from Brussels International on Sat, 13 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,190, 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 November.

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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 found	$854
Cheapest month to fly	November

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

How many airports are there in Brussels?

There are 4 airports in Brussels: Brussels International, Antwerp Deurne, Brussels S. Charleroi, and Liege.

How much are return flights from Seattle / Tacoma International to Brussels?

The best price we found for a return flight from Seattle / Tacoma International to Brussels is $856. 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 / Tacoma International to Brussels?

Currently, there are no airlines that fly direct from Seattle / Tacoma International to Brussels. But we found flights with one or more stops from $854.

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

As of September 2026, there are no flights flying from Seattle / Tacoma International to Brussels.

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

The cheapest month to fly from Seattle / Tacoma International to Brussels is usually November.

Which is the cheapest airport to fly into in Brussels?

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 $856.

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

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 Monday, 16 November 2026.

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

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

How can I get the best flight deal from Seattle / Tacoma International Airport to Brussels?

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.

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.

What’s the weather like in Brussels?

In September, the average temperature is usually around 17°C. August is typically the warmest month in Brussels, when it usually averages around 24°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 2°C. The rainiest month is January.

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

Currently, Icelandair offers the cheapest flight tickets to Brussels.

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

Brussels is nine hours ahead of Seattle, where Seattle-Tacoma International Airport is located. Brussels follows the UTC+1 timezone.
To avoid rushing for your SEA to Brussels flight, allow plenty of time for things like check-in and baggage drop. Turning up two hours ahead of international departures and an hour before domestic flights is the standard rule.
Travelling over a peak time like July? Major public holidays and other popular seasons can mean longer lines and delays at check-in and security. Play it safe and arrive up to four hours ahead of international flights and two hours before domestic departures.
Stopovers are the ideal opportunity to break up your trip and maybe even tick off a new city. When searching for plane tickets from SEA to Brussels, uncheck the 'Direct flights only' box to see where you can visit along the way. Popular options include:
- London Heathrow Airport (LHR)
- Paris Charles de Gaulle Airport (CDG)
- Dublin Airport (DUB)
Travelling from central Seattle to SEA takes around 35 minutes by public transport. If you drive, ride-share or grab a taxi, you'll cover the 18 kilometres in 25 minutes or so, depending on traffic.
Planning to catch an early flight from Seattle-Tacoma International Airport to Brussels? Avoid rushing to the terminal (and sneak in some extra snooze time) by choosing one of these stays near SEA:
Seattle-Tacoma International Airport has an excellent on-time performance, so flight disruptions are less likely. Departures from SEA land on schedule 80% of the time.

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

The lowest price we've found for a one-way Seattle-Tacoma International Airport to Brussels flight is $370. The cheapest price for a return flight is $854. Remember fares may change due to availability at the time of booking.
Don't leave things to the last moment. You're more likely to land cheap flights from SEA to Brussels if you book ahead. Airlines often have some fantastic early bird discounts.
If you have flexibility with your travel plans, take advantage of the 'Whole month' tool. It'll give you the cheapest price across every month when looking for your Seattle-Tacoma International Airport to Brussels ticket.
You don't need to check back in every day to see if fares have dropped when you set up a Price Alert. We'll update you when there's an extra saving on cheap flights from SEA to Brussels.
Tailor your flights with filters. Select your ideal arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Best' or 'Fastest' flights from Seattle-Tacoma International Airport to Brussels.

Airports in Brussels

Brussels Airport (BRU)

Brussels Airport (BRU) to central Brussels takes around 25 minutes to reach by car. The centre is roughly 13 kilometres away.
When travelling by public transport, expect a journey time of about 20 minutes.
The last thing you need is a long journey to your hotel if you're arriving on a late flight from Seattle-Tacoma International Airport to Brussels. Stay at one of these accommodation options near BRU instead:
Booking your vehicle from Brussels Airport about three weeks ahead of your flight from SEA to Brussels can help you get the best possible rate.

Brussels South Charleroi Airport (CRL)

After your flight from Seattle-Tacoma International Airport to Brussels has hit the runway, you can get to the city centre in around 55 minutes by car. Central Brussels is roughly 56 kilometres from Brussels South Charleroi Airport (CRL).
Travelling by public transport will take about 1 hour 15 minutes.
You'll find some comfortable places ready to welcome you near CRL. Kick back and get cosy after your SEA to Brussels flight at any of these well-located options:
Don't pay more than you need to. Booking your ride two weeks before your arrival at CRL can help you lock in a better rate.

Best time to go to Brussels

December is the quietest month for flights from Seattle-Tacoma International Airport to Brussels, while September is the busiest. Choose the ideal time to go to Brussels based on whether you prefer a laid-back vibe or a lively atmosphere.
Before locking in your Seattle-Tacoma International Airport to Brussels plane ticket, think about the weather you're most comfortable in. August is the warmest month in Brussels, with temperatures ranging from 12ºC to 27ºC.
Search for cheap tickets from SEA to Brussels in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -2ºC and 8ºC on average.

More about Brussels

When it comes to searching for somewhere to lay your head, you'll find the best places to stay in Brussels right here. Browse these hotels after locking in your flight from Seattle-Tacoma International Airport to Brussels:
Atomium and Grand Place are just a couple of the major attractions to put on your Brussels must-do list. Continue your sightseeing adventures at Royal Palace of Brussels.

Explore more of Belgium

Ostend is just one of the many places in Belgium waiting to be explored after you've experienced Brussels. Around 113 kilometres away to the west, its top attractions include Church of Saint Peter and Saint Paul, The Crystal Ship and Mu.ZEE.
Verviers is another standout destination in Belgium and is around 113 kilometres east of Brussels. No journey is complete without experiencing Hôtel communal ou Ancienne Halle - Monument classé, Musée d'Archéologie et du Folklore and Musée des Beaux Arts et de la Ceramique.