$40+ Cheap flights from Atlanta (ATL) to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Jul 21 — Jul 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Atlanta to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Atlanta to Illinois
Cheapest
Best
Last-minute
One-way
Cheapest flights from Atlanta to IllinoisExplore the most affordable flight options available from Atlanta to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.
Explore the most affordable flight options available from Atlanta to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/164:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Thu 7/236:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/18![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/164:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/196:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/20![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Wed 11/1810:35 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 6/20![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Fri 7/314:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/18![Frontier logo]()
$91
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Fri 7/104:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/18![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/118:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Wed 11/1810:35 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 6/20![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/126:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/18![Frontier logo]()
$96
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/108:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Sun 7/126:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/18![Frontier logo]()
$97
This Cheapflightsfares deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Tue 7/76:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/17![Frontier logo]()
$106
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/108:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Mon 7/134:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/20![Frontier logo]()
$107
This Frontier deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Wed 7/84:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/19![Frontier logo]()
$108
This Cheapflightsfares deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:45 am
ATL
- ORD
Nonstop2h 17m
Frontier
Tue 9/156:30 am
ORD
- ATL
Nonstop2h 10m
Frontier
Deal found 6/16![Frontier logo]()
$121
Best flights from Atlanta to IllinoisDiscover carefully curated flight deals from Atlanta to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 21, 2026.
Discover carefully curated flight deals from Atlanta to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 21, 2026.
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:20 pm
ATL
- STL
Nonstop1h 40m
Southwest
Sat 8/291:20 pm
STL
- ATL
1 stop6h 15m
Southwest
Deal found 6/20![Southwest logo]()
$137
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:43 am
ATL
- STL
Nonstop1h 36m
Delta
Sun 7/126:00 am
STL
- ATL
Nonstop1h 38m
Delta
Deal found 6/17![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/510:48 pm
ATL
- RFD
1 stop12h 59m
Multiple Airlines
Sun 8/911:37 am
RFD
- ATL
1 stop10h 43m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$177
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:18 pm
ATL
- ORD
Nonstop2h 23m
United Airlines
Tue 7/288:09 pm
ORD
- ATL
Nonstop2h 21m
United Airlines
Deal found 6/20![United Airlines logo]()
$217
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 pm
ATL
- PIA
1 stop4h 59m
American Airlines
Tue 9/86:00 am
PIA
- ATL
1 stop4h 25m
American Airlines
Deal found 6/21![American Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:55 am
ATL
- STL
Nonstop1h 40m
Southwest
Tue 7/217:10 pm
STL
- ATL
Nonstop1h 40m
Southwest
Deal found 6/19![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:48 pm
ATL
- RFD
1 stop12h 59m
Multiple Airlines
Mon 8/176:26 pm
RFD
- ATL
1 stop14h 19m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$180
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:10 pm
ATL
- STL
Nonstop1h 40m
Southwest
Mon 7/276:50 pm
STL
- ATL
1 stop5h 20m
Southwest
Deal found 6/21![Southwest logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:13 pm
ATL
- RFD
1 stop12h 27m
Multiple Airlines
Sun 10/410:08 am
RFD
- ATL
1 stop13h 19m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:15 pm
ATL
- STL
1 stop6h 15m
Southwest
Sun 7/267:55 pm
STL
- ATL
Nonstop1h 40m
Southwest
Deal found 6/16![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/155:20 pm
ATL
- ORD
Nonstop2h 12m
Delta
Sat 12/195:30 am
ORD
- ATL
Nonstop2h 00m
Delta
Deal found 6/16![Delta logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Sun 7/1911:27 am
RFD
- ATL
1 stop19h 56m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$182
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:00 pm
ATL
- STL
1 stop4h 55m
Southwest
Sat 8/85:45 am
STL
- ATL
1 stop3h 45m
Southwest
Deal found 6/21![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/111:29 am
ATL
- ORD
Nonstop2h 24m
United Airlines
Sat 7/410:29 am
ORD
- ATL
Nonstop2h 15m
United Airlines
Deal found 6/19![United Airlines logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:48 pm
ATL
- RFD
1 stop12h 59m
Multiple Airlines
Mon 8/246:56 pm
RFD
- ATL
1 stop13h 49m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$186
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/15:21 pm
ATL
- ORD
Nonstop2h 21m
Delta
Sat 7/41:49 pm
ORD
- ATL
Nonstop2h 05m
Delta
Deal found 6/17![Delta logo]()
$241
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:50 am
ATL
- STL
Nonstop1h 40m
Southwest
Tue 7/141:45 pm
STL
- ATL
1 stop3h 10m
Southwest
Deal found 6/17![Southwest logo]()
$187
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:08 am
ATL
- ORD
Nonstop2h 19m
United Airlines
Fri 8/148:09 pm
ORD
- ATL
Nonstop2h 17m
United Airlines
Deal found 6/16![United Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Thu 7/1611:27 am
RFD
- ATL
1 stop10h 53m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$198
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1510:45 pm
ATL
- ORD
Nonstop2h 05m
Delta
Fri 12/181:35 pm
ORD
- ATL
1 stop7h 22m
Delta
Deal found 6/16![Delta logo]()
$244
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:44 pm
ATL
- ORD
Nonstop2h 15m
United Airlines
Sun 7/267:12 am
ORD
- ATL
Nonstop2h 15m
United Airlines
Deal found 6/17![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1411:50 am
ATL
- STL
1 stop6h 50m
Southwest
Tue 7/211:45 pm
STL
- ATL
1 stop6h 15m
Southwest
Deal found 6/16![Southwest logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2910:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Sun 8/211:27 am
RFD
- ATL
1 stop10h 53m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$201
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:25 am
ATL
- ORD
1 stop6h 39m
Delta
Sat 9/192:00 pm
ORD
- ATL
1 stop5h 04m
Delta
Deal found 6/17![Delta logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/810:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Sun 7/1211:27 am
RFD
- ATL
1 stop19h 56m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$205
This American Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:11 pm
ATL
- CMI
1 stop4h 59m
American Airlines
Sun 9/131:23 pm
CMI
- ATL
1 stop5h 09m
American Airlines
Deal found 6/19![American Airlines logo]()
$366
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:50 am
ATL
- STL
Nonstop1h 40m
Southwest
Sat 7/259:50 am
STL
- ATL
2 stops7h 40m
Southwest
Deal found 6/18![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/208:25 am
ATL
- ORD
1 stop5h 39m
Delta
Wed 9/232:00 pm
ORD
- ATL
1 stop6h 23m
Delta
Deal found 6/19![Delta logo]()
$257
This American Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:25 am
ATL
- CMI
1 stop4h 42m
American Airlines
Wed 7/2211:37 am
CMI
- ATL
1 stop6h 27m
American Airlines
Deal found 6/17![American Airlines logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/110:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Mon 8/37:50 pm
RFD
- ATL
1 stop10h 16m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$216
Last-minute flights from Atlanta to IllinoisDiscover last-minute flight deals from Atlanta to Illinois. Data last updated June 21, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Illinois. Data last updated June 21, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:35 am
ATL
- ORD
Nonstop2h 28m
Frontier
Sat 7/41:29 pm
ORD
- ATL
Nonstop2h 21m
Frontier
Deal found 6/17![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Fri 7/314:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/18![Frontier logo]()
$91
This Cheapflightsfares deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Tue 7/76:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/17![Frontier logo]()
$106
This Frontier deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Wed 7/84:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/19![Frontier logo]()
$108
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/74:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Fri 7/104:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/18![Frontier logo]()
$92
This Booking.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/94:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/126:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/16![Frontier logo]()
$77
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/108:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Sun 7/126:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/18![Frontier logo]()
$97
This Mytrip deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/108:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Mon 7/134:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/20![Frontier logo]()
$107
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:43 am
ATL
- STL
Nonstop1h 36m
Delta
Tue 7/141:22 pm
STL
- ATL
Nonstop1h 45m
Delta
Deal found 6/16![Delta logo]()
$117
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/164:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Thu 7/236:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/18![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/164:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/196:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/20![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/264:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Mon 7/274:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/16![Frontier logo]()
$95
One-way flights from Atlanta to IllinoisSearch for one-way flight options from Atlanta to Illinois. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
Search for one-way flight options from Atlanta to Illinois. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
This Trip.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Deal found 6/18![Frontier logo]()
$40
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 6/19![Frontier logo]()
$45
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:00 pm
ATL
- MDW
Nonstop1h 58m
Frontier
Deal found 6/16![Frontier logo]()
$45
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/194:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 6/19![Frontier logo]()
$49
This eDestinos deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/306:35 am
ATL
- ORD
Nonstop2h 28m
Frontier
Deal found 6/19![Frontier logo]()
$49
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:00 pm
ATL
- MDW
Nonstop1h 58m
Frontier
Deal found 6/18![Frontier logo]()
$52
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Deal found 6/16![Frontier logo]()
$53
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:00 pm
ATL
- MDW
Nonstop1h 58m
Frontier
Deal found 6/20![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:22 pm
ATL
- ORD
Nonstop2h 22m
Frontier
Deal found 6/18![Frontier logo]()
$53
This Priceline deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Deal found 6/20![Frontier logo]()
$54
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:00 pm
ATL
- MDW
Nonstop1h 58m
Frontier
Deal found 6/20![Frontier logo]()
$54
This Frontier deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:22 pm
ATL
- ORD
Nonstop2h 22m
Frontier
Deal found 6/20![Frontier logo]()
$54
Find flight deals from Atlanta to Illinois
Keep the following information in mind while searching for Atlanta to Illinois flight deals. Data was last updated June 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $75 (Super.com) |
One-way from | $40 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $267 |
Good round-trip deal | $205 or less |
Good one-way deal | $136 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Atlanta to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 21, 2026.
Use the filters below to find and compare flights from Atlanta to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 8/11
7:20 pm-8:00 pm
Nonstop1h 40m
Lambert-St Louis
Sat 8/29
1:20 pm-8:35 pm
1 stop6h 15m
$137
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 7/11
8:55 am-9:35 am
Nonstop1h 40m
Lambert-St Louis
Tue 7/21
7:10 pm-9:50 pm
Nonstop1h 40m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 7/23
1:10 pm-1:50 pm
Nonstop1h 40m
Lambert-St Louis
Mon 7/27
6:50 pm-1:10 am
1 stop5h 20m
$167
Quickest round-trip
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 7/9
7:43 am-8:19 am
Nonstop1h 36m
Lambert-St Louis
Sun 7/12
6:00 am-8:38 am
Nonstop1h 38m
$177
AtlantaChicago
ATL - RFD
ATLRFD
Atlanta Hartsfield-Jackson
Wed 8/5
10:48 pm-10:47 am
1 stop12h 59m
Chicago Greater Rockford
Sun 8/9
11:37 am-11:20 pm
1 stop10h 43m
$177
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 7/25
6:15 pm-11:30 pm
1 stop6h 15m
Lambert-St Louis
Sun 7/26
7:55 pm-10:35 pm
Nonstop1h 40m
$177
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/1
4:00 pm-7:55 pm
1 stop4h 55m
Lambert-St Louis
Sat 8/8
5:45 am-10:30 am
1 stop3h 45m
$177
AtlantaChicago
ATL - RFD
ATLRFD
Atlanta Hartsfield-Jackson
Sat 8/15
10:48 pm-10:47 am
1 stop12h 59m
Chicago Greater Rockford
Mon 8/17
6:26 pm-9:45 am
1 stop14h 19m
$180
AtlantaChicago
ATL - RFD
ATLRFD
Atlanta Hartsfield-Jackson
Wed 9/30
9:13 pm-8:40 am
1 stop12h 27m
Chicago Greater Rockford
Sun 10/4
10:08 am-12:27 am
1 stop13h 19m
$182
AtlantaChicago
ATL - RFD
ATLRFD
Atlanta Hartsfield-Jackson
Wed 7/15
10:48 pm-10:37 am
1 stop12h 49m
Chicago Greater Rockford
Sun 7/19
11:27 am-8:23 am
1 stop19h 56m
$182
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Atlanta to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Atlanta with our price prediction graph.
ATL-STL
ATL-ORD
ATL-RFD
ATL-PIA
ATL-CMI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Atlanta to Illinois
ATL-USIL
ATL-STL
ATL-ORD
ATL-RFD
ATL-PIA
What is the cheapest month to book a flight from Atlanta to Illinois?
Currently, November is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $145). Flying from Atlanta to Illinois in June is currently the most expensive (average of $331). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from ATL to IL?
Find hourly flight availability from Atlanta to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 21, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 15% on flights from Atlanta to Illinois by exploring options for tickets in the evening.
Weekly flight availability from Atlanta to Illinois
Explore weekly flight availability from Atlanta to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 21, 2026.
The most flights from ATL to USIL are scheduled on a Sunday (104 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (60 on average).
How much does it cost to fly round-trip from Atlanta to Illinois?
How far ahead should I book a flight from Atlanta to Illinois?
To ensure you get the cheapest price possible for a flight from Atlanta to Illinois, you should look to book at least 49 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Atlanta to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Atlanta to Illinois. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their Atlanta to Illinois flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated June 21, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Atlanta to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Overall
7.9
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Atlanta to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Atlanta to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Atlanta to Illinois by cabin class
Find flights from Atlanta to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Atlanta and Illinois flights
Browse other Atlanta and Illinois flight options. Last updated on June 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Atlanta to Illinois flights
Consider these flights traveling from Atlanta to Illinois.
Top 5 airlines flying from Atlanta to Illinois
Discover the top 5 airlines that operate flights from Atlanta to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$170 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$103 | Average$408 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$141 | Average$372 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$147 | Average$337 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$154 | Average$306 | FlexibilityNo cancel fee | On-time63% |