Cheap Flights from St Louis to Brussels International

Compare St Louis to Brussels International flight deals

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

Book the best Brussels International fare with no extra fees

Flight deals from St Louis to Brussels International

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Brussels International Airport? If you want to travel next month, return fares start from R 16,252. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Brussels International

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

St Louis to Brussels International: Alternative routes

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

St Louis to Brussels: Flight information

The things to know before you go.
Cheapest flight foundR 4,967
Cheapest month to flyOctober

Finding cheap flights from St Louis to Brussels International: Frequently asked questions

The best price we found for a return flight from St Louis to Brussels International is R 12,097. 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 International. But we found flights with one or more stops from R 12,097.
As of June 2026, there are no flights flying from St Louis to Brussels International.
The cheapest month to fly from St Louis to Brussels International is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Brussels International Airport on Sunday, 1 November 2026.
No airlines currently offer direct flights between St Louis Airport and Brussels International Airport. 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 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.

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.

Currently, United offers the cheapest flight tickets to Brussels International.

Flying from St Louis Airport (STL) to Brussels International Airport (BRU): what you need to know

  • Brussels is seven hours ahead of St Louis and follows the UTC+1 timezone.

  • Leave plenty of time to make your STL to BRU flight. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.

  • Be prepared for bigger queues in popular months such as July. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a good idea.

  • Consider adding a stopover when booking your ticket from St Louis Airport to Brussels International Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here's where you can stop between STL and BRU:

    • Chicago O'Hare International Airport

    • Washington Dulles Airport

    • Montreal Pierre Elliott Trudeau Airport

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

  • R 4,967 is the best price for a one-way St Louis Airport to Brussels International Airport flight. A return flight starts at R 12,097. These prices can change depending on demand.

  • To get your hands on cheap tickets from STL to BRU, book ahead. Airlines typically offer lower prices when flights are first made available.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' search tool. It'll find the cheapest price across every month when searching for a flight from St Louis Airport to Brussels International Airport.

  • Save time looking for cheap flights from STL to BRU by setting up a Price Alert. You'll get an email or notification through the app when a special offer becomes available.

  • Select your ideal arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to get the best deals on flights from St Louis Airport to Brussels International Airport.

Handy information about St Louis Airport (STL)

Arriving at Brussels International Airport (BRU)

  • If you have a late St Louis Airport to Brussels International Airport flight, nothing beats the convenience of staying near the terminal. Grab your suitcases from the carousel and then be showered and relaxing shortly after at one of these options near BRU:

  • Fast-track your adventure by picking up a Brussels International Airport rental car. Grab a set of wheels from Keddy By Europcar, Alamo or Europcar and experience the lesser-explored corners of Brussels and beyond.

  • To lock in the lowest price, reserve your vehicle from Brussels International Airport around three weeks before travelling.

Getting from Brussels International Airport (BRU) to central Brussels

  • From Brussels International Airport, Brussels is approximately 13 kilometres away. It takes around 25 minutes to reach the centre driving.

  • When travelling on public transport, expect a journey time of around 20 minutes.

When to fly to Brussels International Airport (BRU)

  • The quietest month for a flight from St Louis Airport to Brussels International Airport is March, while September is the busiest. Choose the ideal time to visit Brussels based on whether you prefer a faster pace or a more relaxed vibe.

  • The warmest month in Brussels is August, with temperatures ranging between 12ºC (54ºF) and 27ºC (81ºF). Lock in your flights from St Louis Airport to Brussels International Airport in this month if you enjoy this type of weather.

  • Search for cheap tickets from STL to BRU in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -2ºC (28ºF) and 8ºC (46ºF) on average.

Explore more of Belgium

  • Brussels has plenty to offer, but there are so many other parts of Belgium just waiting to be explored. About 48 kilometres south of Brussels, a trip to Charleroi will keep you busy. Start with attractions like Musée de la Photographie, BPS22, Musee d'art de la Province de Hainaut and Le Bois du Cazier.

  • Around 88 kilometres east of Brussels, Liege is another favourite stop in Belgium. Get a taste of what this destination has to offer at Cathedral de Liege (Liege Cathedral), 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.