Cheap Flights from Atlanta (ATL) to St. Louis (SUS)

Popular airlines from Hartsfield-Jackson Atlanta International Airport (ATL) to St. Louis, MO (SUS-Spirit of St. Louis)

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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 $112
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $112
Flights from Atlanta (ATL) to St. Louis (SUS)
Origin airport
Hartsfield-Jackson Atlanta Intl.
Destination airport
Spirit of St. Louis
Distance
489 mi

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 . 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 2025. You can also book with separate airlines for your outbound and return journeys, from 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.

 

Frequently asked questions

How much does a flight from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS) cost?
Discover the latest flight deals from ATL to SUS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ATL to SUS?
The cheapest flights from ATL to SUS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ATL to SUS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ATL to SUS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS)?
You'll need to catch a flight with a layover when traveling from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from ATL to SUS?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS)?
Choose a flight from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this hour 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.
What airports do you fly into for St. Louis from Hartsfield-Jackson Atlanta Intl. Airport (ATL)?
Lambert-St. Louis Intl. Airport (STL) is the only airport in St. Louis with direct flights from Hartsfield-Jackson Atlanta Intl. Airport (ATL). Check out the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS) last-minute?
Waiting until just before your trip to book a flight from ATL to SUS generally means paying more. While it's possible to find some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for a better chance of getting a bargain.
Is it cheaper to book an ATL to SUS flight and hotel package?
Securing an ATL to SUS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our extensive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Spirit of St. Louis Airport (SUS)?
If you booked your ATL to SUS flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

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