C$226 Cheap Flights from Baton Rouge Ryan (BTR) to St Louis (STL)

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Find the cheapest month to fly from Baton Rouge Ryan to St Louis

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

Baton Rouge Ryan to St Louis: Alternative routes

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

Baton Rouge to St Louis: Flight information

The things to know before you go.
Cheapest flight foundC$226
Cheapest month to flySeptember

Finding cheap flights from Baton Rouge Ryan to St Louis: Frequently asked questions

The best price we found for a return flight from Baton Rouge Ryan to St Louis is C$440. 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 Baton Rouge Ryan to St Louis. But we found flights with one or more stops from C$440.
As of August 2026, there are no flights flying from Baton Rouge Ryan to St Louis.
The cheapest month to fly from Baton Rouge Ryan to St Louis is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baton Rouge Ryan Airport to St Louis Airport on Friday, October 16, 2026.
No airlines currently offer direct flights between Baton Rouge Ryan 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, Delta offers the cheapest flight tickets to St Louis.

Flying from Baton Rouge Ryan Airport (BTR) to St Louis Airport (STL): what you need to know

  • St Louis's timezone is UTC-6, which is the same as Baton Rouge.

  • Get to the airport on time so you don't miss your BTR to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

  • Travelling during a peak time like October? School holidays and other high seasons can result in longer lines and delays at check-in and security. Play things extra safe and get there up to four hours ahead of international flights and two hours before domestic departures.

  • We make it a piece of cake to book a flight with a stopover. To see all your options for tickets from Baton Rouge Ryan Airport to St Louis Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to visit the city of your choice. Top stopovers between BTR and STL include:

    • Atlanta Hartsfield-Jackson Airport

    • Dallas Fort Worth International Airport

    • Charlotte Douglas Airport

How to find the cheapest flights from Baton Rouge Ryan Airport (BTR) to St Louis Airport (STL)

  • The cheapest price we've found for a one-way Baton Rouge Ryan Airport to St Louis Airport flight is C$226. A round-trip ticket right now is C$440. Depending on the availability and when you book, these fares may change.

  • Don't leave things to the last moment. You're more likely to get cheap tickets from BTR to STL if you book early. Airlines often have some excellent early bird deals.

  • If you're willing to be flexible with your travel plans, use the 'Whole month' search tool. It'll find the lowest price in each month when looking for your flight from Baton Rouge Ryan Airport to St Louis Airport.

  • You won't have to check every day to see if fares have gone down when you create a Price Alert. We'll send you an update as soon as there's a change in price on cheap flights from BTR to STL.

  • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Baton Rouge Ryan Airport to St Louis Airport.

Handy information about Baton Rouge Ryan Airport (BTR)

  • BTR's address is 9430 Jackie Cochran Drive.

  • Baton Rouge Ryan Airport has a strong on-time record, so you're less likely to experience disruptions. Departures from BTR make it to their destination as scheduled 81% of the time.

  • To get to Baton Rouge Ryan Airport from central Baton Rouge, it takes around 20 minutes if you're travelling by car. Of course, this depends on traffic conditions. It's approximately 13 kilometres from the airport to the city centre.

  • Expect a trip time of around 45 minutes when using public transport.

  • Looking for a handy hotel near BTR? If you're catching an early flight from Baton Rouge Ryan Airport to St Louis Airport, these accommodation options will have you sleeping moments from your check-in counter:

Arriving at St Louis Airport (STL)

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

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

  • St Louis Airport to the centre of St Louis has a drive time of around 25 minutes. It's approximately 24 kilometres away.

  • Travelling by public transport will take you around 30 minutes.

When to fly to St Louis Airport (STL)

  • It's time to work out your dates for your flight from Baton Rouge Ryan Airport to St Louis Airport. July is the busiest month to head to St Louis. If you like a more low-key vibe, go in March.

  • The warmest month in St Louis is July, with the temperature ranging between 17ºC (63ºF) and 33ºC (91ºF). Book your flights from Baton Rouge Ryan Airport to St Louis Airport in this month if you like this kind of weather.

  • Search for cheap tickets from BTR to STL in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 8ºC (46ºF) on average.

Explore more of the United States

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

  • Indianapolis is another well-known destination in the United States and is around 370 kilometres east of St Louis. No trip is complete without seeing Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.

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