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$264 Cheap Flights from Chattanooga (CHA) to St. Louis (STL)

View $264 flight on Fri, Oct 30, 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 $264 for one-way flights and $299 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Nov 11 - Wed, Nov 18
CHA
Chattanooga
STL
St. Louis
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 11 from Chattanooga to St. Louis, returning Wed, Nov 18, priced at $299 found 1 day ago
American Airlines
Wed, Nov 11 - Wed, Nov 18
CHA
Chattanooga
STL
St. Louis
$301 Roundtrip, found 1 day ago
$301
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Nov 11 from Chattanooga to St. Louis, returning Wed, Nov 18, priced at $301 found 1 day ago
Delta
Wed, Nov 11 - Wed, Nov 18
CHA
Chattanooga
STL
St. Louis
$301 Roundtrip, found 1 day ago
$301
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Nov 11 from Chattanooga to St. Louis, returning Wed, Nov 18, priced at $301 found 1 day ago
United
Wed, Nov 11 - Wed, Nov 18
CHA
Chattanooga
STL
St. Louis
$303 Roundtrip, found 1 day ago
$303
Roundtrip
found 1 day ago
Select United flight, departing Wed, Nov 11 from Chattanooga to St. Louis, returning Wed, Nov 18, priced at $303 found 1 day ago
United
Thu, Sep 24 - Tue, Oct 13
CHA
Chattanooga
STL
St. Louis
$305 Roundtrip, found 2 days ago
$305
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 24 from Chattanooga to St. Louis, returning Tue, Oct 13, priced at $305 found 2 days ago
American Airlines
Sat, Oct 3 - Tue, Oct 20
CHA
Chattanooga
STL
St. Louis
$310 Roundtrip, found 22 hours ago
$310
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Sat, Oct 3 from Chattanooga to St. Louis, returning Tue, Oct 20, priced at $310 found 22 hours ago
American Airlines
Fri, Oct 9 - Mon, Oct 12
CHA
Chattanooga
STL
St. Louis
$319 Roundtrip, found 7 hours ago
$319
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Fri, Oct 9 from Chattanooga to St. Louis, returning Mon, Oct 12, priced at $319 found 7 hours ago
United
Tue, Nov 17 - Mon, Nov 23
CHA
Chattanooga
STL
St. Louis
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 17 from Chattanooga to St. Louis, returning Mon, Nov 23, priced at $322 found 2 days ago
United
Tue, Nov 17 - Mon, Nov 23
CHA
Chattanooga
STL
St. Louis
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select United flight, departing Tue, Nov 17 from Chattanooga to St. Louis, returning Mon, Nov 23, priced at $324 found 2 days ago
United
Fri, Apr 2 - Sun, Apr 4
CHA
Chattanooga
STL
St. Louis
$327 Roundtrip, found 3 days ago
$327
Roundtrip
found 3 days ago
Select United flight, departing Fri, Apr 2 from Chattanooga to St. Louis, returning Sun, Apr 4, priced at $327 found 3 days ago

What you need to know for your flight from Chattanooga Metropolitan to Lambert-St. Louis Intl.

Chattanooga (CHA) to St. Louis (STL) at a glance

Choose from a range of airlines offering flights from Chattanooga (CHA) to St. Louis (STL) on this domestic short-haul route. Assess various options from full-service carriers to discover the itinerary that best aligns with your budget and travel plans as you venture into the notable sights and neighborhoods of St. Louis. Here, you’ll find essential information about flights departing from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis International Airport (STL).

  • Fastest flight duration: around 3h 30m in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 400 miles (645 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $115–$375, depending on seasonality and how far ahead you book

Flights from Chattanooga Metropolitan Airport (CHA) to Lambert-St. Louis International Airport (STL)

Based on the latest traveler bookings, here are the top airlines favored for one-stop flights from Chattanooga to St. Louis. Popular layovers include Hartsfield-Jackson Atlanta International Airport (ATL, about 1 hour and 15 minutes), Charlotte-Douglas International Airport (CLT, around 1 hour and 15 minutes), and O'Hare International Airport (ORD, approximately 1 hour). These options allow you to customize your journey by balancing price, total travel time, and cabin class for the ideal itinerary.

  • American Airlines: This full-service airline provides one-stop flights, handling nearly 47% of departures on this route. One-way ticket prices generally fall between $115 and $355. Expect about 3 hours and 30 minutes in the air, with total travel time around 4 hours and 30 minutes, including layover.
  • Delta: Another full-service option, Delta offers one-stop service and is responsible for roughly 43% of departures on this route. One-way fares typically range from $115 to $465. Passengers can anticipate an in-flight duration of 3 hours and 30 minutes, with an overall journey time of about 4 hours and 30 minutes, factoring in a layover.
  • United: United Airlines operates one-stop services, accounting for approximately 11% of departures for this route. One-way fares usually range from $130 to $360. Travelers should expect around 3 hours and 30 minutes of flying time, with the total journey taking close to 4 hours and 30 minutes, including layover.

Travelers flying from Chattanooga to St. Louis can opt for an upgrade, as Delta provides first-class service on this route.

Best time to fly from Chattanooga (CHA) to St. Louis (STL)

The most popular months for travelers flying from Chattanooga to St. Louis are January, April, and May, when peak temperatures in St. Louis reach up to 66.6°F in May. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 70.9°F. For better deals, May and November usually offer the lowest average one-way fares around $209. Flight availability peaks in April and November, with approximately 10 flights per week, making it easier to find convenient departure times. June and December have the fewest flights, with approximately 7 flights per week.

  • Cheapest time to fly: May and November usually offer good deals with average one-way fares around $209, roughly 9% cheaper than the yearly average.
  • More budget-friendly months to fly: July and August typically offer average one-way fares of around $213.
  • Most flight options: April and November have the highest number of flights from Chattanooga to St. Louis, with approximately 10 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January31.6°F (-0.2°C)High8$273
February34.9°F (1.6°C)Average9$223
March46.4°F (8.0°C)Average9$251
April56.1°F (13.4°C)High10$264
May66.6°F (19.2°C)High9$209
June76.1°F (24.5°C)Low7$236
July78.6°F (25.9°C)Average8$212
August77.0°F (25.0°C)Average9$214
September70.9°F (21.6°C)Low8$218
October58.6°F (14.8°C)Average9$230
November46.2°F (7.9°C)Average10$209
December37.8°F (3.2°C)Low7$229

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Chattanooga (CHA) to St. Louis (STL)

  • Chattanooga to Belleville (CHA-BLV): MidAmerica-St. Louis Airport (BLV) is located approximately 33 miles from Lambert-St. Louis International Airport (STL).

How to find the best prices for flights from Chattanooga (CHA) to St. Louis (STL)

Getting some of the best deals on flights from Chattanooga to St. Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book within two weeks. Morning departures from 5 a.m. to 12 p.m. often offer lower prices and are the most popular flight times. Additionally, flying on Wednesdays typically yields cheaper rates, while Fridays remain the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Lambert-St. Louis International Airport from Chattanooga Metropolitan Airport

St. Louis welcomes travelers from Chattanooga with a range of transport options based on price, convenience, and proximity. Here's how to reach St. Louis efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in St. Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Lambert-St. Louis International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Lambert-St. Louis International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is located about 0.1 miles away on foot, providing easy access to public transport for travelers.

Frequently asked questions

How much does a flight from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $264 and cheap return flights from $299 Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights typically cost between $206 and $565, and return flights often range between $308 and $956. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The cheapest month to fly from CHA to STL is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter CHA to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
American Airlines is one of the cheapest airlines offering connecting flights from Chattanooga, TN (CHA) to St. Louis, MO (STL), with round-trip tickets starting from around $228. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Chattanooga Metropolitan (CHA) to Lambert-St. Louis Intl. (STL) typically departs at 5:00 AM, operated by American Airlines. An early departure like this can help you maximize your time in St. Louis. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Chattanooga, TN (CHA) to St. Louis, MO (STL) are in the morning, from 6am to 9am. About 24% of passengers prefer this time window. Many major carriers, including American Airlines, Delta Air Lines, and United Airlines, offer flights during this window. This timing is popular because it helps you arrive in St. Louis with plenty of time to enjoy the day.
How long does it take to fly from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Flying from CHA to STL with a connection usually takes about 5 hours, traveling roughly 384 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class seats are offered on the CHA to STL route. First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines

How do I earn miles on a Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis from Chattanooga Metropolitan (CHA)?
If you're planning to travel to St. Louis from Chattanooga Metropolitan (CHA), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Hartsfield-Jackson Atlanta Intl. (ATL), Detroit Metropolitan Wayne County (DTW) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) St Louis Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Chattanooga, TN (CHA-Chattanooga Metropolitan) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Chattanooga Metropolitan
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$299
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 2026. You can also book with separate airlines for your outbound and return journeys, from $264 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

*Flight schedules are subject to change.

*Available to One Key members.

 

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