Cheap flight tickets from Seattle to Brussels

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Flight deals from Seattle to Brussels

Looking for a cheap last-minute deal or the best return flight from Seattle to Brussels? If you want to travel next month, return fares start from RM2,423. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Brussels

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

Seattle to Brussels: Flight information

The things to know before you go.
Cheapest flight foundRM1,054
Cheapest month to flyApril

Finding cheap flights from Seattle to Brussels: Frequently asked questions

There are 4 airports in Brussels: Brussels International, Antwerp Deurne, Brussels S. Charleroi, and Liege.
The best price we found for a return flight from Seattle to Brussels is RM2,386. 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 to Brussels. But we found flights with one or more stops from RM2,386.
As of July 2026, there are no flights flying from Seattle to Brussels.
The cheapest month to fly from Seattle to Brussels is usually September.
If you're flying from Seattle, 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 RM2,386.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Brussels on Monday, 21 September 2026.
No airlines currently offer direct flights between Seattle 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 July, the average temperature is usually around 18°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.
The cheapest airline that flies to Brussels is Icelandair .

Flying from Seattle to Brussels: what you need to know

  • There are two main airports to choose from in Seattle. Explore your options departing from Seattle / Tacoma International Airport (SEA) or Seattle Lake Union SPB Airport (LKE) when reserving your flight from Seattle to Brussels.

  • When choosing where to land in Brussels, Brussels International Airport (BRU) and Brussels S. Charleroi Airport (CRL) are the primary gateways.

  • The timezone in Brussels is UTC+1, which is nine hours ahead of Seattle.

  • To ensure you make your Seattle to Brussels flight, leave enough time to check in and drop off your luggage. Turning up two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Flying during a peak month like July? Public holidays and other high seasons can mean longer queues and delays at check-in and security. Play things extra safe and arrive up to four hours ahead of international flights and two hours before a domestic departure.

How to find the cheapest flights from Seattle to Brussels

  • Booking early is often the key to securing a cheap Seattle to Brussels flight. Fares tend to rise as demand increases, so the nearer your departure date, the more it could cost you.

  • Getting cheap plane tickets from Seattle to Brussels is more likely if you're flexible with your travel plans. Use the 'Whole month' search tool to see the best prices throughout the month and walk away with an incredible deal.

  • Cut down on the time spent looking for cheap flights from Seattle to Brussels by creating a Price Alert. You'll receive an email or push notification on the app when a lower fare pops up.

  • Lock in a cheap Seattle to Brussels flight with the help of our filters. Choose your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

Flying from Seattle

Seattle / Tacoma International Airport (SEA)

  • Think about adding a stopover to potentially save money on your Seattle to Brussels flight. Just uncheck 'Direct flights only' when searching for departures from Seattle / Tacoma International Airport. Take a break from travelling at one of these airports:

    • London Heathrow Airport (LHR)

    • Paris Charles de Gaulle Airport (CDG)

    • Dublin Airport (DUB)

  • SEA is about 19 kilometres from central Seattle. If you're driving, catching a taxi or ride-sharing from the centre, it'll take 25 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the trip time to be around 35 minutes.

  • In search of a convenient hotel close to Seattle / Tacoma International Airport? If you've booked an early flight from Seattle to Brussels, these stays will have you moments from your check-in counter:

  • Seattle / Tacoma International Airport has a strong on-time performance, so you're unlikely to face delays. Departures from SEA make it to their destination as scheduled 80% of the time.

Arriving in Brussels

Brussels International Airport (BRU)

  • The distance from Brussels International Airport (BRU) to central Brussels is approximately 11 kilometres. It takes around 25 minutes to get to the centre driving.

  • It usually takes 20 minutes to get there on public transport.

  • If you're arriving on a late flight from Seattle to Brussels, nothing beats the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and sleeping not long after at one of these hotels near BRU:

  • Begin your adventure by picking up a Brussels International Airport rental car. Grab your wheels from Keddy By Europcar, Alamo or Europcar to explore Brussels and beyond.

  • To get the best deal, reserve your vehicle from Brussels International Airport around three weeks ahead of your Seattle to Brussels flight.

Brussels S. Charleroi Airport (CRL)

  • After your flight from Seattle to Brussels has landed, you can get to the city centre in about 55 minutes by car. Central Brussels is approximately 40 kilometres from Brussels S. Charleroi Airport (CRL).

  • If you hop on public transport, the ride to the centre takes 1 hour 15 minutes or so.

  • Place the 'Do not disturb' sign on your door and unwind at a hotel close to CRL. Here are a few options where you can settle in after your flight from Seattle to Brussels:

  • Forget about public transport schedules or taxi lines. Pick up a Brussels S. Charleroi Airport rental car and go in any direction that inspires you. Compare offers from Keddy By Europcar, Thrifty and Budget.

  • Snap up a deal by securing your ride from CRL two weeks in advance. You can also expect to have a greater range of vehicles.

Best time to go to Brussels

  • September is the busiest month for flights from Seattle to Brussels. To travel when it's less crowded, go to Brussels in March.

  • Before locking in your Seattle to Brussels tickets, think about the kind of weather forecast you're hoping for. August is the warmest month in Brussels, with temperatures ranging from 12ºC (54ºF) to 27ºC (81ºF).

  • If you'd rather travel in cooler conditions, look for a cheap flight from Seattle to Brussels in January when temperatures average between -2ºC (28ºF) and 8ºC (46ºF).

More about Brussels

  • Start your Brussels trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from Seattle to Brussels, check out our range of hotels including:

  • There are so many things to see and do in this city it can be tricky to know where to begin. Grand-Place of Brussels, Atomium and Royal Palace of Brussels are major attractions which should feature on any good Brussels itinerary.

Explore more of Belgium

  • You've done Brussels, now it's time to discover other corners of Belgium. Journey around 48 kilometres south to Charleroi to tick off its popular sights. From Musée de la Photographie to BPS22, Musee d'art de la Province de Hainaut and Le Bois du Cazier, you'll have a full itinerary ahead.

  • Around 88 kilometres east of Brussels, Liege is another favourite stop in Belgium. Experience this destination's highlights firsthand at Saint Paul's Cathedral of Liège, Parc De La Citadelle and Parc de la Chartreuse.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.