C$248 Cheap Flights from Baton Rouge Ryan (BTR) to St Louis (STL)

Compare Baton Rouge Ryan to St Louis flight deals

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Flight deals from Baton Rouge Ryan to St Louis

Looking for a cheap last-minute deal or the best return flight from Baton Rouge Ryan Airport to St Louis Airport? If you want to travel next month, return fares start from C$423. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Baton Rouge Ryan to St Louis from C$248 one-way

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 June.

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$248
Cheapest month to flyJune

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$423. 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$423.
As of May 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 June.
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 Tuesday, June 9, 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 Metropolitan Airport (BTR) to Lambert-St. Louis International Airport (STL): what you need to know

  • Getting on a plane during a peak month like July? Popular periods (like summer, Christmas and New Year) can add another hour at security. Be extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

  • If you want to break up your flight from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport, add a stopover to your trip. Simply deselect 'Direct flights only' and find a city that interests you. Popular stopovers on the BTR - STL route include:

    • Dallas/Fort Worth International Airport

    • George Bush Intercontinental Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Baton Rouge Metropolitan Airport (BTR) to Lambert-St. Louis International Airport (STL)

  • The best price we've found for a one-way ticket from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport is C$248. The cheapest price for a return flight is C$423. Keep in mind that fares may change due to availability at the time of booking.

  • Don't leave things to the last minute. You're more likely to find cheap flight tickets from BTR to STL if you book early. Airlines often offer some excellent early bird discounts.

  • Finding cheap flight tickets from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport is easy if you can be flexible with your dates. Use the 'Whole month' function to see the lowest prices across each month and bag a great deal.

  • Sign into your online account or use the app to set up a Price Alert. We'll get in touch right away if there's a better deal on this route. It's easy to do, and it'll save you time looking for cheap flight tickets from BTR to STL every day.

  • Play around with filters to find the perfect trip for you. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport, use the 'Sort by' function. You can also filter results by airline, departure and arrival times, and journey duration.

Handy information about Baton Rouge Metropolitan Airport (BTR)

  • Baton Rouge Metropolitan Airport is around 13 kilometres from central Baton Rouge. If you're driving, ride-sharing or catching a cab from the center, it'll take 11 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the trip time to be around 53 minutes.

  • Got an early flight from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport? Avoid the hassle of rushing to the airport (and get some extra shut-eye) by choosing one of these stays close to BTR:

Arriving at Lambert-St. Louis International Airport (STL)

Getting from Lambert-St. Louis International Airport (STL) to central St Louis

  • Lambert-St. Louis International Airport to central St Louis is about 21 minutes by car. It's approximately 26 kilometres away. Find out what options are available, such as cabs, car rentals or ride-sharing.

  • Getting to the center on public transport will take you around 36 minutes.

When to fly to Lambert-St. Louis International Airport (STL)

  • It's time to pick your trip dates for your flight from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport. July is the busiest month to visit St Louis. If you want a more low-key vibe, go in April.

  • Lock in your flight from Baton Rouge Metropolitan Airport to Lambert-St. Louis International Airport for July if you'd like to visit St Louis during its warmest month. You can expect temperatures of between 17ºC and 33ºC.

  • January has average temperatures of between -8ºC and 7ºC. Search for cheap flight tickets from BTR to STL sometime then if you like cooler conditions.

More about St Louis

  • As soon as you've locked in your flights from BTR to STL, you'll want to find a place to stay in St Louis. Make one of these accommodation options your base for exploring this top destination:

  • Every great adventure has to include some sightseeing. The Gateway Arch, Forest Park and St. Louis Zoo are must-do's during your St Louis adventure.

Complete your St Louis trip with hotels and a car rental

  • After you've secured your cheap ticket to Lambert-St. Louis International Airport, check out the lowest prices and exclusive offers on hotels. You can also compare hundreds of car rental companies in one place to get the best car rental price for your St Louis vacation.

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