Cheap Flights from Chattanooga (CHA) to St Louis (STL)

Compare Chattanooga to St Louis flight deals

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

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Flight deals from Chattanooga to St Louis

Looking for a cheap last-minute deal or the best return flight from Chattanooga Airport to St Louis Airport? If you want to travel next month, return fares start from $425. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Chattanooga to St Louis

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

Chattanooga to St Louis: Alternative routes

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

Chattanooga to St Louis: Flight information

The things to know before you go.
Cheapest flight found$408
Cheapest month to flyJuly

Finding cheap flights from Chattanooga to St Louis: Frequently asked questions

The best price we found for a return flight from Chattanooga to St Louis is $408. 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 Chattanooga to St Louis. But we found flights with one or more stops from $406.
As of June 2026, there are no flights flying from Chattanooga to St Louis.
The cheapest month to fly from Chattanooga to St Louis is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chattanooga Airport to St Louis Airport on Monday, 27 July 2026.
No airlines currently offer direct flights between Chattanooga 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, United offers the cheapest flight tickets to St Louis.

Flying from Chattanooga Airport (CHA) to St Louis Airport (STL): what you need to know

  • The timezone in St Louis is UTC-6, which is one hour behind Chattanooga.

  • Get to the airport on time so you don't miss your CHA to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • During popular months like October, you'll want to get to the airport earlier. Plan to arrive two hours before domestic departures and four hours ahead for international flights whenever you're flying during a high season in general.

  • Think about adding a stopover when booking your ticket from Chattanooga Airport to St Louis Airport. Just uncheck 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Here are some options between CHA and STL:

    • Chicago O'Hare International Airport

    • Atlanta Hartsfield-Jackson Airport

    • Charlotte Douglas Airport

How to find the cheapest flights from Chattanooga Airport (CHA) to St Louis Airport (STL)

  • $276 is currently the lowest price for a one-way Chattanooga Airport to St Louis Airport flight. Return flights start from $408. These fares may change based on demand.

  • To get your hands on cheap tickets from CHA to STL, book ahead. Airlines generally offer lower fares when flights are first released.

  • The 'Whole month' tool shows you the cheapest flights from Chattanooga Airport to St Louis Airport across every month. It's an easy way to snap up a bargain if your trip dates are flexible.

  • You don't need to check back in every day to find out if fares have gone down when you create a Price Alert. We'll update you as soon as there's a new deal on cheap flights from CHA to STL.

  • Discover the ideal flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Chattanooga Airport to St Louis Airport, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and number of stops.

Handy information about Chattanooga Airport (CHA)

  • Of the departures from Chattanooga Airport, 77% arrive as scheduled at their destination.

  • Chattanooga Airport is about 14 kilometres from central Chattanooga. If you're catching a taxi, ride-sharing or driving from the centre, it'll take 20 minutes or so to get there, depending on the traffic.

  • The trip on public transport takes roughly 40 minutes.

  • Catching an early flight from Chattanooga Airport to St Louis Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these hotels close to CHA:

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 about 25 minutes. It's approximately 24 kilometres away.

  • When travelling by public transport, expect a journey of about 30 minutes.

When to fly to St Louis Airport (STL)

  • It's time to plan your travel dates for your flight from Chattanooga Airport to St Louis Airport. July is the busiest month to visit St Louis. If you like a quieter vibe, go in March.

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

  • Look for cheap tickets from CHA to STL in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between -7ºC (19ºF) and 8ºC (46ºF) on average.

Explore more of the United States

  • You've visited St Louis, now it's time to discover more of the United States. Journey around 418 kilometres north-east to Chicago to tick off its top attractions. From Millennium Park to Art Institute of Chicago and Willis Tower, you'll have a full itinerary ahead.

  • Indianapolis is another well-known destination in the United States and is around 370 kilometres east of St Louis. No trip is complete without visiting 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.