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

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

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Flights from Atlanta (PDK) to St. Louis (STL)
Origin airport
DeKalb-Peachtree
Destination airport
Lambert-St. Louis Intl.
Distance
475 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 2026. 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 DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight or cheap return flight from DeKalb-Peachtree Airport (PDK) 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 DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from PDK to STL is , when there's less demand. Off-peak months are typically when airlines offer better prices between these airports.
Which airlines fly direct from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
Although Atlanta, GA (PDK-DeKalb-Peachtree) doesn't have any direct flights to Lambert-St. Louis Intl. Airport (STL), other airports have nonstop options. Taking off from Hartsfield-Jackson Atlanta Intl. Airport (ATL) will get you to St. Louis without any layovers.
What is the cheapest airline that flies from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from PDK to STL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
Nonstop flights from DeKalb-Peachtree Airport (PDK) 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 filter tool. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDK to STL?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, 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 DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
Opt for a flight from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 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.
Is it cheaper to buy a plane ticket from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Waiting until just before your trip to book a ticket from PDK to STL generally means paying more. While you might find some last-minute offers, there's no guarantee. Be flexible with your itinerary to maximize your chances of landing a bargain.
Is it cheaper to book a PDK to STL flight and hotel package?
You can save money by securing a PDK to STL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've selected your ideal flights and accommodations, you can add extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from DeKalb-Peachtree Airport (PDK) to Lambert-St. Louis Intl. Airport (STL)?
You can usually reschedule or cancel your PDK to STL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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