
$28 Cheap flight deals from Atlanta (ATL) to Southwest Illinois (STL)
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This Weekend's Flight Deals from Atlanta to Southwest Illinois
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $28 One Way, $56 Round Trip from Atlanta to Southwest Illinois
Prices starting at $56 for return flights and $28 for one-way flights to Southwest Illinois were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Southwest Illinois economy flight packages

The Knight Center at Washington University
Jul 2 - Jul 7
Atlanta (ATL) to St. Louis (STL)
St. Louis (STL) to Atlanta (ATL)
Reviewed on Sep 15, 2025

The Wildwood Hotel
Jul 2 - Jul 7
Atlanta (ATL) to St. Louis (STL)
St. Louis (STL) to Atlanta (ATL)
Reviewed on Feb 24, 2026

The Cheshire
Jul 2 - Jul 7
Atlanta (ATL) to St. Louis (STL)
St. Louis (STL) to Atlanta (ATL)
Reviewed on May 4, 2026
More About Flying To Southwest Illinois from Atlanta
Route Information for Flights from Atlanta to Southwest Illinois
Origin Airport IATA Code | ATL |
|---|---|
Destination Airport IATA Code | STL |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
Atlanta to Southwest Illinois
The perfect trip begins with Orbitz. From booking your flights from Atlanta to Southwest Illinois to finding the best hotels, Orbitz has got it covered.
Stress-free Searching
With an easy to use system, Orbitz takes the stress and expense out of travel. Not only does Orbitz match your Atlanta to Southwest Illinois flights to your ideal hotel, the Display Matrix shows your deals and discounts, including free nights and other savings.
Be One Step Ahead
Need to know what is going on at the airport before you get there? With Orbitz’s free alerts service, you can quickly find out about any booking changes, or flight from Atlanta to Southwest Illinois disruptions, saving you hours of wasted time. And if you are being picked up at the airport after your Atlanta to Southwest Illinois flights, have alerts sent straight to your contact’s mobile phone or email.
Cutting-Edge Mobile Tools
Find the best price on flights from Atlanta to Southwest Illinois with Orbitz’s mobile apps for iPhone and Android. Use m.orbitz.com on your mobile browser to check your gate, baggage allowance and delays, or find exclusive deals on hotels only available to mobile users.
We Work, you Rest and Play
Not only does booking with us ensure guaranteed low prices, but Orbitz does the hard work, leaving you to relax. Just tell us what you want, from Atlanta to Southwest Illinois flights, to great deals on hotels and car rental, and activities and tours, and we will do all the rest.
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.

