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$22 Cheap Flights from Atlanta (ATL) to St. Louis (STL)

View $22 flight on Mon, Sep 14, 2026Opens in a new window

Popular airlines from Hartsfield-Jackson Atlanta International Airport (ATL) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Atlanta to St. Louis (ATL-STL)

Prices were available within the past 7 days and start at $22 for one-way flights and $46 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Mon, Oct 5 - Mon, Oct 12
ATL
Atlanta
STL
St. Louis
$46 Roundtrip, just found
$46
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Oct 5 from Atlanta to St. Louis, returning Mon, Oct 12, priced at $46 just found
Frontier Airlines
Fri, Sep 25 - Mon, Sep 28
ATL
Atlanta
STL
St. Louis
$48 Roundtrip, just found
$48
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Sep 25 from Atlanta to St. Louis, returning Mon, Sep 28, priced at $48 just found
Frontier Airlines
Fri, Sep 18 - Mon, Sep 21
ATL
Atlanta
STL
St. Louis
$51 Roundtrip, found 1 hour ago
$51
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Sep 18 from Atlanta to St. Louis, returning Mon, Sep 21, priced at $51 found 1 hour ago
Frontier Airlines
Wed, Sep 30 - Mon, Oct 5
ATL
Atlanta
STL
St. Louis
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Sep 30 from Atlanta to St. Louis, returning Mon, Oct 5, priced at $56 just found
Frontier Airlines
Wed, Sep 16 - Mon, Sep 21
ATL
Atlanta
STL
St. Louis
$57 Roundtrip, found 5 hours ago
$57
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Wed, Sep 16 from Atlanta to St. Louis, returning Mon, Sep 21, priced at $57 found 5 hours ago
Frontier Airlines
Thu, Nov 5 - Tue, Nov 10
ATL
Atlanta
STL
St. Louis
$61 Roundtrip, just found
$61
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 5 from Atlanta to St. Louis, returning Tue, Nov 10, priced at $61 just found
Southwest Airlines
Fri, Sep 25 - Mon, Sep 28
ATL
Atlanta
STL
St. Louis
$91 Roundtrip, just found
$91
Roundtrip
just found
Select Southwest Airlines flight, departing Fri, Sep 25 from Atlanta to St. Louis, returning Mon, Sep 28, priced at $91 just found
American Airlines
Thu, Nov 5 - Tue, Nov 10
ATL
Atlanta
STL
St. Louis
$159 Roundtrip, just found
$159
Roundtrip
just found
Select American Airlines flight, departing Thu, Nov 5 from Atlanta to St. Louis, returning Tue, Nov 10, priced at $159 just found
United
Mon, Nov 9 - Wed, Nov 11
ATL
Atlanta
STL
St. Louis
$170 Roundtrip, found 9 hours ago
$170
Roundtrip
found 9 hours ago
Select United flight, departing Mon, Nov 9 from Atlanta to St. Louis, returning Wed, Nov 11, priced at $170 found 9 hours ago
Alaska Airlines
Sat, Sep 26 - Sat, Oct 3
ATL
Atlanta
STL
St. Louis
$783 Roundtrip, found 1 day ago
$783
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Sep 26 from Atlanta to St. Louis, returning Sat, Oct 3, priced at $783 found 1 day ago

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 $197
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $197

Find the cheapest month to fly from Atlanta (ATL) to St. Louis (STL)

October is typically the cheapest month to fly

From $46 - $95 per traveler.

What you need to know for your flight from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl.

Atlanta (ATL) to St. Louis (STL) at a glance

Travel between Atlanta (ATL) and St. Louis (STL) with a range of airlines on this domestic short-haul route. Discover cheap flights from Atlanta to St. Louis as you compare options from both full-service and budget-friendly carriers. This way, you can find the best itinerary that suits your budget and travel plans while exploring the highlights and neighborhoods of St. Louis. Gather essential information for your journey from Hartsfield-Jackson Atlanta International Airport (ATL) to Lambert-St. Louis International Airport (STL).

  • Fastest flight duration: around 1h 45m non-stop
  • Route distance: roughly 500 miles (805 km)
  • Flights per week: around 25+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $45–$365, depending on seasonality and how far ahead you book

Flights from Hartsfield-Jackson Atlanta International Airport (ATL) to Lambert-St. Louis International Airport (STL)

According to recent traveler bookings, here are the top airlines flying from Atlanta to St. Louis, offering both non-stop and one-stop flights. Common layover options include Orlando International Airport (MCO) with approximately a 1 hour 30 minute layover, O'Hare International Airport (ORD) at around 1 hour 15 minutes, and Charlotte-Douglas International Airport (CLT) with about a 1 hour layover. This variety allows you to compare prices, total travel times, and cabin classes to create your ideal itinerary.

  • Delta: As a comprehensive service provider, Delta offers non-stop flights with one-way ticket prices usually between $90 and $395. It operates about 55% of departures on this route, with a total flight duration of 1 hour and 45 minutes.
  • Southwest Airlines: This budget airline provides both non-stop and one-stop options, with one-way fares generally ranging from $75 to $345. It makes up around 32% of the departures on this route, featuring a standard non-stop travel time of 1 hour and 45 minutes.
  • Frontier Airlines: Another low-cost airline, Frontier offers both non-stop and one-stop services, with one-way fares typically between $45 and $200. It represents about 11% of the departures on this route, also boasting a non-stop journey time of 1 hour and 45 minutes.
  • American Airlines: This full-service carrier provides one-stop flights, with one-way prices usually between $105 and $355. It accounts for about 2% of the departures on this route, with an in-flight duration of 4 hours and 15 minutes, leading to a total travel time of approximately 5 hours and 30 minutes, including layover.
  • United: As another full-service option, United offers one-stop services with one-way fares generally ranging from $125 to $345. The in-flight time is around 4 hours and 15 minutes, resulting in a total journey time of about 5 hours and 30 minutes, factoring in the layover.

Travelers flying from Atlanta to St. Louis can opt to enhance their journey with Delta's first class or premium economy service, providing a more comfortable and enjoyable travel experience.

Best time to fly from Atlanta (ATL) to St. Louis (STL)

The most popular months for travelers flying from Atlanta to St. Louis are March, April, and July, when peak temperatures in St. Louis reach up to 78.6°F in July. If you prefer quieter travel, consider November, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 46.2°F. For better deals, August usually offers the lowest average one-way fare around $134. Flight availability peaks in June and July, with approximately 35 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 20 flights per week.

  • Cheapest time to fly: August usually offers good deals with average one-way fare around $134, roughly 26% cheaper than the yearly average.
  • Another budget-friendly time to fly: September typically offers an average one-way fare of around $153.
  • Most flight options: June and July have the highest number of flights from Atlanta to St. Louis, with approximately 35 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)Slightly Low20$203
February34.9°F (1.6°C)Average23$184
March46.4°F (8.0°C)Slightly High29$217
April56.1°F (13.4°C)Slightly High32$207
May66.6°F (19.2°C)Slightly Low31$212
June76.1°F (24.5°C)Average35$176
July78.6°F (25.9°C)Slightly High35$166
August77.0°F (25.0°C)Average32$134
September70.9°F (21.6°C)Average31$153
October58.6°F (14.8°C)Average34$168
November46.2°F (7.9°C)Slightly Low31$187
December37.8°F (3.2°C)Average31$175

*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 routes from Atlanta (ATL) to St. Louis (STL)

  • Atlanta to St. Louis (FTY-STL): Fulton County Airport (FTY) is located approximately 10 miles from Hartsfield-Jackson Atlanta International Airport (ATL), providing convenient access to the city.
  • Atlanta to St. Louis (ATL-SUS): Spirit of St. Louis Airport (SUS) lies around 16 miles from Lambert-St. Louis International Airport (STL), allowing for seamless travel between these destinations.
  • Atlanta to St. Louis (ATL-CPS): St. Louis Downtown Airport (CPS) is situated nearly 16 miles from Lambert-St. Louis International Airport (STL), making it a viable option for travelers.

How to find the best prices for flights from Atlanta (ATL) to St. Louis (STL)

Getting some of the best deals on flights from Atlanta 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 found when booking 2-8 weeks in advance, aligning with when most travelers make their reservations. Morning departures (5 am-12 pm) often offer lower prices, while afternoon flights (12 pm-6 pm) are more popular. Additionally, flying on Saturday typically provides better rates, although Friday remains the most favored 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 Hartsfield-Jackson Atlanta International Airport

St. Louis welcomes travelers from Atlanta with a range of transport options based on price, convenience, and proximity. For departures, Hartsfield-Jackson Atlanta International Airport is roughly a 10-minute drive (covering about 10 miles) from central Atlanta. 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 just 0.1 miles away on foot, providing convenient access to public transportation.

Frequently asked questions

How much does a flight from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from $22 and cheap return flights from $46 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) with Expedia. One-way flights generally range between $142 and $750, and roundtrip flights usually range from $263 to $900. 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The cheapest month to fly from ATL to STL is October 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Choose from 2 airlines operating direct flights from ATL to STL:

  • Delta operates around 47 direct flights from ATL to STL every week
  • Frontier Airlines operates around 7 direct flights from ATL to STL every week

What is the cheapest airline that flies from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Spirit Airlines is one of the cheapest airlines offering connecting flights from Hartsfield-Jackson Atlanta Intl. (ATL) to Lambert-St. Louis Intl. (STL) with return tickets starting from around $135. 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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 airline to fly with from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best airline to fly with from Atlanta, GA (ATL) to St. Louis, MO (STL) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. WN also offers the most daily flights from ATL to STL, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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.
How many flights per day from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 10 nonstop flights per day from Hartsfield-Jackson Atlanta Intl. (ATL) to Lambert-St. Louis Intl. (STL). For more options, look at flights that include layovers.
What is the earliest flight from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Atlanta, GA (ATL) to St. Louis, MO (STL) typically departs at 5:00 AM, operated by American Airlines. This is a seasonal service available in March. An early departure allows you to maximize your day 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) are from 9am to 12pm. About 22% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines, and Southwest Airlines, operate flights during this time. This timing works well because it allows you to start your day early and arrive in St. Louis with plenty of time to explore.
How long does it take to fly from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A nonstop flight from ATL to STL typically takes around 1 hour 50 minutes, covering approximately 483 miles. Connecting flights on this route usually add 5 hours 30 minutes to your travel time. 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
First class is available on flights from ATL to STL. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How much is a business class flight from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
A non-stop, one-way business class flight from Atlanta (ATL) to St. Louis (STL) is usually around $373 - $631. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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 Hartsfield-Jackson Atlanta Intl. (ATL)?
If you're planning to travel to St. Louis from Hartsfield-Jackson Atlanta Intl. (ATL), you can fly into Lambert-St. Louis Intl. (STL) Some flights may connect through major hubs like Washington Dulles Intl. (IAD), McKellar-Sipes Regional (MKL), Love Field (DAL) 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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 Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) 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

0
Origin airport
Hartsfield-Jackson Atlanta Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$46
Distance
482 mi

Book with confidence

Atlanta to St. Louis Flights

The cheapest times to fly from Atlanta 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 Atlanta to St. Louis are during the month of October. You can find some of the cheapest flights from Atlanta to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Atlanta 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 Atlanta 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 Atlanta to St. Louis in 2026. You can also book with separate airlines for your outbound and return journeys, from $22 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 Atlanta 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 Atlanta 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.

 

Atlanta to St. Louis Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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