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665 € Cheap Flights from Brussels International to St Louis

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      Travellers and cabin class, 1 Adult, Economy

      Compare Brussels International to St Louis flight deals

      Find the cheapest month or even day of the year to fly to St Louis

      Book the best St Louis fare with no extra fees

      Flight deals from Brussels International to St Louis

      Looking for a cheap last-minute deal or the best return flight from Brussels International Airport to St Louis Airport? If you want to travel next month, return fares start from 667 €. Find the lowest prices on one-way and return tickets right here.
      St Louis.665 € per passenger.Departing Sun, 30 Aug, returning Sat, 5 Sep.Return flight with Lufthansa and Brussels Airlines.Outbound indirect flight with Lufthansa, departs from Brussels International on Sun, 30 Aug, arriving in St Louis.Inbound indirect flight with Brussels Airlines, departs from St Louis on Sat, 5 Sep, arriving in Brussels International.Price includes taxes and charges.From 665 €, select.
      St Louis.667 € per passenger.Departing Thu, 6 Aug, returning Mon, 10 Aug.Return flight with Lufthansa and Brussels Airlines.Outbound indirect flight with Lufthansa, departs from Brussels International on Thu, 6 Aug, arriving in St Louis.Inbound indirect flight with Brussels Airlines, departs from St Louis on Mon, 10 Aug, arriving in Brussels International.Price includes taxes and charges.From 667 €, select.
      St Louis.676 € per passenger.Departing Wed, 16 Sep, returning Mon, 28 Sep.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Wed, 16 Sep, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Mon, 28 Sep, arriving in Brussels International.Price includes taxes and charges.From 676 €, select.
      St Louis.680 € per passenger.Departing Sat, 22 Aug, returning Sat, 12 Dec.Return flight with Brussels Airlines and Lufthansa.Outbound indirect flight with Brussels Airlines, departs from Brussels International on Sat, 22 Aug, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sat, 12 Dec, arriving in Brussels International.Price includes taxes and charges.From 680 €, select.
      St Louis.681 € per passenger.Departing Wed, 28 Oct, returning Sun, 1 Nov.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Wed, 28 Oct, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sun, 1 Nov, arriving in Brussels International.Price includes taxes and charges.From 681 €, select.
      St Louis.681 € per passenger.Departing Thu, 24 Sep, returning Thu, 1 Oct.Return flight with United.Outbound indirect flight with United, departs from Brussels International on Thu, 24 Sep, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Thu, 1 Oct, arriving in Brussels International.Price includes taxes and charges.From 681 €, select.
      St Louis.681 € per passenger.Departing Sun, 22 Nov, returning Sat, 28 Nov.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Sun, 22 Nov, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sat, 28 Nov, arriving in Brussels International.Price includes taxes and charges.From 681 €, select.
      St Louis.682 € per passenger.Departing Tue, 18 May, returning Thu, 27 May.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Tue, 18 May, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Thu, 27 May, arriving in Brussels International.Price includes taxes and charges.From 682 €, select.
      St Louis.687 € per passenger.Departing Tue, 25 May, returning Sun, 6 Jun.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Tue, 25 May, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sun, 6 Jun, arriving in Brussels International.Price includes taxes and charges.From 687 €, select.
      St Louis.687 € per passenger.Departing Mon, 26 Apr, returning Sun, 9 May.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Mon, 26 Apr, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sun, 9 May, arriving in Brussels International.Price includes taxes and charges.From 687 €, select.
      St Louis.687 € per passenger.Departing Fri, 2 Oct, returning Sat, 10 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Brussels International on Fri, 2 Oct, arriving in St Louis.Inbound indirect flight with Air Canada, departs from St Louis on Sat, 10 Oct, arriving in Brussels International.Price includes taxes and charges.From 687 €, select.
      St Louis.688 € per passenger.Departing Thu, 23 Jul, returning Sat, 9 Jan.Return flight with United.Outbound indirect flight with United, departs from Brussels International on Thu, 23 Jul, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Sat, 9 Jan, arriving in Brussels International.Price includes taxes and charges.From 688 €, select.
      St Louis.688 € per passenger.Departing Fri, 9 Apr, returning Sun, 11 Apr.Return flight with United.Outbound indirect flight with United, departs from Brussels International on Fri, 9 Apr, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Sun, 11 Apr, arriving in Brussels International.Price includes taxes and charges.From 688 €, select.
      St Louis.689 € per passenger.Departing Tue, 22 Dec, returning Thu, 31 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Brussels International on Tue, 22 Dec, arriving in St Louis.Inbound indirect flight with Delta, departs from St Louis on Thu, 31 Dec, arriving in Brussels International.Price includes taxes and charges.From 689 €, select.
      St Louis.691 € per passenger.Departing Mon, 8 Mar, returning Mon, 15 Mar.Return flight with United.Outbound indirect flight with United, departs from Brussels International on Mon, 8 Mar, arriving in St Louis.Inbound indirect flight with United, departs from St Louis on Mon, 15 Mar, arriving in Brussels International.Price includes taxes and charges.From 691 €, select.
      St Louis.693 € per passenger.Departing Wed, 29 Jul, returning Sat, 19 Sep.Return flight with Lufthansa.Outbound indirect flight with Lufthansa, departs from Brussels International on Wed, 29 Jul, arriving in St Louis.Inbound indirect flight with Lufthansa, departs from St Louis on Sat, 19 Sep, arriving in Brussels International.Price includes taxes and charges.From 693 €, select.

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

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Brussels International to St Louis flights are currently cheapest in August.
      Jul
      from 873 €
      Aug
      from 667 €
      Sep
      from 676 €
      Oct
      from 687 €
      Nov
      from 681 €
      Dec
      from 689 €
      Jan
      Find prices
      Feb
      from 695 €
      Mar
      from 691 €
      Apr
      from 688 €
      May
      from 682 €
      Jun
      from 835 €

      Brussels International to St Louis: Alternative routes

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

      St Louis

      20km from central St Louis
      ClosestCheapest
      from 665 €
      Search flights

      Belleville

      32km from central St Louis
      from 972 €
      Search flights

      Brussels to St Louis: Flight information

      The things to know before you go.
      Cheapest flight found665 €
      Cheapest month to flyAugust

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

      The best price we found for a return flight from Brussels International to St Louis is 665 €. 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 Brussels International to St Louis. But we found flights with one or more stops from 665 €.
      As of July 2026, there are no flights flying from Brussels International to St Louis.
      The cheapest month to fly from Brussels International to St Louis is usually August.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Brussels International Airport to St Louis Airport on Sunday, 30 August 2026.
      No airlines currently offer direct flights between Brussels International Airport and St Louis 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 St Louis 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 St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Lufthansa offers the cheapest flight tickets to St Louis.

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

      • St Louis's timezone is UTC-6, making St Louis seven hours behind Brussels.

      • To ensure you get on your BRU to STL flight, leave plenty of time to check in and drop off your luggage. Turning up two hours before international departures and one hour before domestic flights is the standard rule.

      • During popular months such as September, you'll want to get to the airport well in advance. Arrive two hours before a domestic departure and four hours ahead for an international flight whenever you're flying during a peak period in general.

      • We make it simple to book a flight with a stopover. To see your options for tickets from Brussels International Airport to St Louis Airport, deselect 'Direct flights only.' Then, pick a flight that has a stop long enough to explore the city of your choice. Top stopovers between BRU and STL include:

        • Chicago O'Hare International Airport

        • Frankfurt am Main Airport

        • New York Newark Airport

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

      • 387 € is currently the lowest price for a one-way Brussels International Airport to St Louis Airport flight. A return flight starts from 665 €. These fares may change based on demand and availability.

      • Don't leave things to the last minute. You're more likely to find cheap tickets from BRU to STL if you book ahead. Airlines often have some fantastic early bird rates.

      • The 'Whole month' search tool shows you the cheapest flights from Brussels International Airport to St Louis Airport across every month. It's a great way to find a bargain if your trip dates aren't set in stone.

      • There's no need to check back in every day to see if fares have dropped when you create a Price Alert. We'll send you an update the moment the price changes on cheap flights from BRU to STL.

      • Lock in the perfect flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Brussels International Airport to St Louis Airport, use the 'Sort by' function. You can also filter by airline, arrival and departure times, and journey duration.

      Handy information about Brussels International Airport (BRU)

      • Of all flights leaving Brussels International Airport, 75% arrive on time at their destination.

      • Central Brussels to Brussels International Airport is approximately 13 kilometres. Depending on traffic, it'll take about 25 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • The journey when using public transport usually takes 20 minutes.

      • Searching for a convenient hotel near BRU? If you've booked an early flight from Brussels International Airport to St Louis Airport, these accommodation options will have you moments from your check-in counter:

      Arriving at St Louis Airport (STL)

      Getting from St Louis Airport (STL) to central St Louis

      • STL is located at 10701 Lambert International Blvd..

      • From St Louis Airport, St Louis is approximately 24 kilometres away. It takes around 25 minutes to get to the centre driving.

      • If you're using public transport, expect a journey of roughly 30 minutes.

      When to fly to St Louis Airport (STL)

      • It's time to work out your travel dates for your flight from Brussels International Airport to St Louis Airport. July is the most popular month to visit St Louis. If you like a more relaxed vibe, go in March.

      • Lock in your flight from Brussels International Airport to St Louis Airport for July if you want to visit St Louis during its warmest month. Expect temperatures of between 17ºC (63ºF) and 33ºC (91ºF).

      • For cooler conditions, look for a cheap ticket from BRU to STL in January. Temperatures average between -7ºC (19ºF) and 8ºC (46ºF) then.

      Explore more of the United States

      • Chicago is just one of the many cities in the United States waiting to be explored after you've seen St Louis. Around 418 kilometres away to the north-east, well-known attractions include Millennium Park, Art Institute of Chicago and Willis Tower.

      • If you're ready to explore another side of the United States, consider Indianapolis, roughly 370 kilometres east of St Louis. Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis are highlights.

      Plan the rest of your trip from Brussels to St Louis

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