$115 Cheap Flights from Chattanooga (CHA) to St. Louis (STL)

View $115 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines from Chattanooga Metropolitan Airport (CHA) to St. Louis Lambert Intl. Airport (STL)

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

Prices were available within the past 7 days and start at $115 for one-way flights and $229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Nov 14 - Mon, Nov 17
CHA
Chattanooga
STL
St. Louis
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Nov 14 from Chattanooga to St. Louis, returning Mon, Nov 17, priced at $229 found 1 hour ago
Delta
Thu, Nov 13 - Sat, Nov 15
CHA
Chattanooga
STL
St. Louis
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select Delta flight, departing Thu, Nov 13 from Chattanooga to St. Louis, returning Sat, Nov 15, priced at $229 found 1 hour ago
United
Fri, Nov 14 - Mon, Nov 17
CHA
Chattanooga
STL
St. Louis
$229 Roundtrip, found 1 hour ago
$229
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Nov 14 from Chattanooga to St. Louis, returning Mon, Nov 17, priced at $229 found 1 hour ago
American Airlines
Sat, Nov 8 - Wed, Nov 12
CHA
Chattanooga
STL
St. Louis
$234 Roundtrip, found 17 hours ago
$234
Roundtrip
found 17 hours ago
Select American Airlines flight, departing Sat, Nov 8 from Chattanooga to St. Louis, returning Wed, Nov 12, priced at $234 found 17 hours ago
United
Sat, Nov 8 - Wed, Nov 12
CHA
Chattanooga
STL
St. Louis
$238 Roundtrip, found 17 hours ago
$238
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Nov 8 from Chattanooga to St. Louis, returning Wed, Nov 12, priced at $238 found 17 hours ago
United
Fri, Jan 9 - Mon, Jan 12
CHA
Chattanooga
STL
St. Louis
$240 Roundtrip, found 6 days ago
$240
Roundtrip
found 6 days ago
Select United flight, departing Fri, Jan 9 from Chattanooga to St. Louis, returning Mon, Jan 12, priced at $240 found 6 days ago
United
Fri, Oct 31 - Sat, Nov 1
CHA
Chattanooga
STL
St. Louis
$245 Roundtrip, found 6 days ago
$245
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 31 from Chattanooga to St. Louis, returning Sat, Nov 1, priced at $245 found 6 days ago
United
Fri, Nov 7 - Mon, Nov 10
CHA
Chattanooga
STL
St. Louis
$249 Roundtrip, found 5 hours ago
$249
Roundtrip
found 5 hours ago
Select United flight, departing Fri, Nov 7 from Chattanooga to St. Louis, returning Mon, Nov 10, priced at $249 found 5 hours ago
Delta
Tue, Jan 13 - Fri, Jan 30
CHA
Chattanooga
STL
St. Louis
$254 Roundtrip, found 11 hours ago
$254
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Jan 13 from Chattanooga to St. Louis, returning Fri, Jan 30, priced at $254 found 11 hours ago
American Airlines
Fri, Dec 5 - Sat, Dec 6
CHA
Chattanooga
STL
St. Louis
$258 Roundtrip, found 21 hours ago
$258
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Fri, Dec 5 from Chattanooga to St. Louis, returning Sat, Dec 6, priced at $258 found 21 hours ago

Find the cheapest month to fly from Chattanooga (CHA) to St. Louis (STL)

February is typically the cheapest month to fly

From $198 - $430 per traveler.

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $234
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $234

Frequently asked questions

How much does a flight from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $115 or cheap return flight from $229 from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL)?
Planning your trip for November is a good way to save, as it's the cheapest month for flights between CHA and STL. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest CHA to STL flight.
How many flights per day from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL)?
Direct flights from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CHA to STL?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL)?
Book a flight from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from CHA to STL shortly before your getaway is generally more expensive. However, if you're flexible with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a CHA to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a CHA to STL flight and hotel package with Expedia could result in significant savings. What's more, having everything in one easy place will take the hassle out of planning your trip. Simply secure your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you can reschedule or cancel your CHA to STL flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, head to our Customer Service portal.

Travel information

Origin airport
Chattanooga Metropolitan
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$228
Distance
383 mi

Book with confidence

Chattanooga to St. Louis Flights

The cheapest times to fly from Chattanooga to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chattanooga to St. Louis are during the month of November. You can find some of the cheapest flights from Chattanooga to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chattanooga to St. Louis

Sunday is one of the best days to book for cheap flights from Chattanooga to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chattanooga to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chattanooga to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $115 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chattanooga to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chattanooga to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Chattanooga to St. Louis Flights

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*Available to One Key members.