Cheap Flights from St. Louis (STL) to Atlanta (PDK)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Atlanta, GA (PDK-DeKalb-Peachtree)

Alternative airports near Atlanta

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

Select flight to Hartsfield-Jackson Atlanta Intl. ATL. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $112
ATL
Hartsfield-Jackson Atlanta Intl.
Cheapest
Average driving time to city center16 min
Flights from $112

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK) cost?
Secure a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK)?
Planning your getaway for may help you find better deals, as it's the cheapest month for flights between STL and PDK. You'll usually find the lowest prices during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK)?
To find the cheapest airline that'll fly you from STL to PDK, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK)?
Nonstop flights from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to PDK?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, time of year 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 Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK)?
To avoid possible delays on the Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK) route, aim to travel before 3 PM. Departures after this time are 22% more likely to be canceled.**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 Atlanta from Lambert-St. Louis Intl. Airport (STL)?
If you've booked a direct flight from Lambert-St. Louis Intl. Airport (STL) to Atlanta, Hartsfield-Jackson Atlanta Intl. Airport (ATL) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK) last-minute?
Waiting until just before your trip to book a flight from STL to PDK often results in higher prices. While you might find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for a better chance of scoring a bargain.
Is it cheaper to book a STL to PDK flight and hotel package?
Opting for a STL to PDK flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of hotels and then add flights, activities and car rentals 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 Lambert-St. Louis Intl. Airport (STL) to DeKalb-Peachtree Airport (PDK)?
Typically, you can modify or cancel your STL to PDK flight. However, there may be additional charges, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need more information, visit our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
DeKalb-Peachtree
Distance
475 mi

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St. Louis to Atlanta Flights

The cheapest times to fly from St. Louis to Atlanta

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

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Atlanta: 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 St. Louis to Atlanta

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 St. Louis to Atlanta 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 St. Louis to Atlanta 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 St. Louis to Atlanta 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.

 

St. Louis to Atlanta Flights

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*Available to One Key members.