Cheap flight tickets from St Louis to Brussels

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Flight deals from St Louis to Brussels

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Brussels? If you want to travel next month, return fares start from RM4,589. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Brussels

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

St Louis to Brussels: Flight information

The things to know before you go.
Cheapest flight foundRM1,524
Cheapest month to flyAugust

Finding cheap flights from St Louis 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 St Louis to Brussels is RM3,174. 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 St Louis to Brussels. But we found flights with one or more stops from RM3,174.
As of May 2026, there are no flights flying from St Louis to Brussels.
The cheapest month to fly from St Louis to Brussels is usually November.
If you're flying from St Louis 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 RM3,174.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Brussels on Wednesday, 4 November 2026.
No airlines currently offer direct flights between St Louis 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 May, the average temperature is usually around 13°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, United offers the cheapest flight tickets to Brussels.

Travelling from St Louis Lambert International Airport (STL) to Brussels: what you need to know

  • The timezone in Brussels is UTC+1. The city is seven hours ahead of St Louis, where St Louis Lambert International Airport is located.

  • To avoid missing your STL to Brussels flight, leave enough time to check in and find your gate. Turning up two hours before international departures and one hour before domestic flights is the general travel rule.

  • During popular months like July, it's a good idea to get to the airport earlier than usual. Plan to arrive two hours before domestic departures and four hours ahead for an international flight whenever you're travelling during a peak period in general.

  • A stopover is the perfect opportunity to break up your journey and maybe even tick off a new city. When browsing for plane tickets from STL to Brussels, deselect the 'Direct flights only' box to see where you can visit along the way. Here are some popular options to consider:

    • Chicago O'Hare International Airport (ORD)

    • Washington Dulles International Airport (IAD)

    • Montreal-Trudeau International Airport (YUL)

  • STL is around 16 kilometres from central St Louis. 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 planning to take public transport, expect the journey time to be around 30 minutes.

  • Booked an early flight from St Louis Lambert International Airport to Brussels? Avoid the stress of rushing to the airport (and sneak in some extra snooze time) by choosing one of these hotels close to STL:

  • 76% of flights departing from St Louis Lambert International Airport touch down at their destination on schedule.

  • You'll find STL at 10701 Lambert International Blvd..

How to find the cheapest flights from St Louis Lambert International Airport (STL) to Brussels

  • RM1,524 is the lowest price we've seen for a one-way St Louis Lambert International Airport to Brussels flight. A round-trip ticket right now is RM3,174. Depending on the availability when you book, these fares could change.

  • To pick up cheap flights from STL to Brussels, book in advance. Airlines generally offer lower prices when flights first go on sale.

  • If you're willing to be flexible with your travel plans, take advantage of the 'Whole month' search tool. It'll find the cheapest price across every month when searching for a St Louis Lambert International Airport to Brussels ticket.

  • You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll notify you when there's an even better deal on cheap flights from STL to Brussels.

  • Pick your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from St Louis Lambert International Airport to Brussels by 'Best,' 'Fastest' or 'Cheapest.'

Airports in Brussels

Brussels Airport (BRU)

  • Brussels Airport (BRU) to the centre of Brussels takes around 25 minutes to reach by car. The centre is roughly 13 kilometres away.

  • Getting there on public transport will take you around 20 minutes.

  • If you're coming in on a late flight from St Louis Lambert International Airport to Brussels, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and snoozing not long after at one of these accommodation options near BRU:

  • Lock in the best deal by booking your ride from Brussels Airport about three weeks ahead of your flight from STL to Brussels.

Brussels South Charleroi Airport (CRL)

  • After your flight from St Louis Lambert International Airport to Brussels has touched down, you can reach the city centre in around 55 minutes by car. Central Brussels is roughly 56 kilometres from Brussels South Charleroi Airport (CRL).

  • You can expect the journey to take about 1 hour 15 minutes on public transport.

  • Following your STL to Brussels flight, settle in at a hotel near CRL. These are some great options that'll help you slip into relaxation mode:

  • Get exactly what you want. Securing your ride from CRL two weeks in advance often means more savings and a wider choice of vehicles.

Best time to go to Brussels

  • It's time to work out your trip dates for your flight from St Louis Lambert International Airport to Brussels. September is the most popular month to travel to Brussels. If you prefer a more relaxed atmosphere, go in December.

  • Book a St Louis Lambert International Airport to Brussels plane ticket with a departure in August if you want to visit the city during its warmest month. You can expect temperatures to range from 12ºC (54ºF) to 27ºC (81ºF).

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

More about Brussels

  • Start your Brussels trip right by choosing the perfect place to stay. As soon as you've booked your flight from St Louis Lambert International Airport to Brussels, check out our range of accommodation options including:

  • There are so many things to see and do in this city it can be hard to figure out where to start. Atomium, Grand Place and Royal Palace of Brussels are top sights which should feature on every Brussels itinerary.

Explore more of Belgium

  • You've done Brussels, now it's time to explore other parts of Belgium. Travel about 113 kilometres west to Ostend to tick off its popular sights. From Church of Saint Peter and Saint Paul to The Crystal Ship and Mu.ZEE, there's plenty to keep you on the go.

  • If you're ready to explore another great destination in Belgium, consider Verviers, roughly 113 kilometres east of Brussels. Hôtel communal ou Ancienne Halle - Monument classé, Musée d'Archéologie et du Folklore and Musée des Beaux Arts et de la Ceramique are key reasons to visit.

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