$27+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Jun 9 — Jun 161
Round-trip
1 adult, Economy
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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 May 10, 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 May 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Mon 6/15:27 pm
STL
- ATL
Nonstop1h 47m
Frontier
Deal found 5/9![Frontier logo]()
$74
This Super.com deal was found by Cheapflights users on 5/9. 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.
Sat 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Sat 6/135:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 5/9![Frontier logo]()
$82
This Frontier deal was found by Cheapflights users on 5/9. 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 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Thu 6/116:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/9![Frontier logo]()
$83
This Booking.com deal was found by Cheapflights users on 5/7. 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.
Sun 6/214:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/286:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/7![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/410:08 am
ATL
- MDW
Nonstop2h 04m
Frontier
Wed 6/106:00 am
MDW
- ATL
Nonstop2h 19m
Frontier
Deal found 5/9![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/16:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Tue 6/96:55 am
ORD
- ATL
Nonstop2h 32m
Frontier
Deal found 5/7![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/128:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/146:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/5![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 5/9. 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.
Mon 6/19:00 pm
ATL
- MDW
Nonstop2h 02m
Frontier
Thu 6/46:00 am
MDW
- ATL
Nonstop2h 09m
Frontier
Deal found 5/9![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 5/6. 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 6/36:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Wed 6/101:29 pm
ORD
- ATL
Nonstop2h 21m
Frontier
Deal found 5/6![Frontier logo]()
$91
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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.
Wed 6/108:00 am
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/146:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/6![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 5/5. 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 8/139:05 pm
ATL
- MDW
Nonstop2h 03m
Frontier
Sat 8/156:00 am
MDW
- ATL
Nonstop2h 11m
Frontier
Deal found 5/5![Frontier logo]()
$92
This Cheapflightsfares deal was found by Cheapflights users on 5/5. 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 5/306:15 pm
ATL
- ORD
Nonstop2h 26m
Frontier
Sat 6/66:55 am
ORD
- ATL
Nonstop2h 39m
Frontier
Deal found 5/5![Frontier logo]()
$92
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 May 10, 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 May 10, 2026.
This Southwest deal was found by Cheapflights users on 5/6. 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 6/302:10 pm
ATL
- STL
Nonstop1h 40m
Southwest
Sat 7/45:00 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 5/6![Southwest logo]()
$117
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 6/136:07 am
ATL
- ORD
1 stop19h 41m
Frontier
Mon 6/156:55 am
ORD
- ATL
Nonstop2h 32m
Frontier
Deal found 5/9![Frontier logo]()
$187
This United Airlines deal was found by Cheapflights users on 5/9. 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.
Mon 6/17:06 pm
ATL
- ORD
Nonstop2h 26m
United Airlines
Wed 6/38:14 pm
ORD
- ATL
Nonstop2h 21m
United Airlines
Deal found 5/9![United Airlines logo]()
$209
This Delta deal was found by Cheapflights users on 5/6. 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 5/2810:46 pm
ATL
- ORD
Nonstop2h 13m
Delta
Mon 6/17:07 am
ORD
- ATL
Nonstop2h 10m
Delta
Deal found 5/6![Delta logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/2010:42 pm
ATL
- RFD
1 stop12h 55m
Multiple Airlines
Mon 6/227:53 pm
RFD
- ATL
1 stop10h 18m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 5/5. 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 6/86:50 am
ATL
- STL
Nonstop1h 40m
Southwest
Mon 6/86:50 pm
STL
- ATL
1 stop5h 15m
Southwest
Deal found 5/5![Southwest logo]()
$138
This Southwest deal was found by Cheapflights users on 5/5. 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 7/272:50 pm
STL
- ATL
1 stop5h 00m
Southwest
Deal found 5/5![Southwest logo]()
$138
This KAYAK deal was found by Cheapflights users on 5/8. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2512:04 pm
ATL
- ORD
Nonstop2h 17m
American Airlines
Wed 5/271:44 pm
ORD
- ATL
Nonstop2h 12m
American Airlines
Deal found 5/8![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/5. 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 6/610:50 am
ATL
- STL
2 stops8h 10m
Southwest
Sun 6/77:55 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 5/5![Southwest logo]()
$143
This Southwest deal was found by Cheapflights users on 5/7. 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 7/312:30 pm
ATL
- STL
1 stop4h 25m
Southwest
Sun 7/54:40 pm
STL
- ATL
1 stop6h 35m
Southwest
Deal found 5/7![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 5/9. 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 10/13:30 pm
ATL
- MDW
Nonstop1h 57m
Delta
Mon 10/51:05 pm
MDW
- ATL
Nonstop2h 01m
Delta
Deal found 5/9![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 5/5. 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.
Sun 6/287:00 pm
ATL
- STL
1 stop4h 35m
Southwest
Sun 7/54:40 pm
STL
- ATL
1 stop6h 35m
Southwest
Deal found 5/5![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 7/167:38 pm
ATL
- BMI
1 stop14h 07m
Multiple Airlines
Mon 7/209:35 am
BMI
- ATL
1 stop22h 26m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$251
This Southwest deal was found by Cheapflights users on 5/6. 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 6/127:35 pm
ATL
- STL
1 stop4h 15m
Southwest
Mon 6/155:05 am
STL
- ATL
1 stop6h 30m
Southwest
Deal found 5/6![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 5/8. 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 7/96:15 pm
ATL
- STL
1 stop6h 50m
Southwest
Tue 7/143:10 pm
STL
- ATL
1 stop4h 50m
Southwest
Deal found 5/8![Southwest logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/610:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Mon 6/87:53 pm
RFD
- ATL
2 stops17h 43m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 5/8. 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 6/196:15 pm
ATL
- STL
1 stop5h 55m
Southwest
Sun 6/215:45 am
STL
- ATL
1 stop6h 00m
Southwest
Deal found 5/8![Southwest logo]()
$157
This American Airlines deal was found by Cheapflights users on 5/8. 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.
Sat 6/133:06 pm
ATL
- PIA
2 stops10h 32m
American Airlines
Sat 6/274:27 pm
PIA
- ATL
1 stop6h 31m
American Airlines
Deal found 5/8![American Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/1010:42 pm
ATL
- RFD
1 stop12h 55m
Multiple Airlines
Mon 6/157:53 pm
RFD
- ATL
2 stops41h 44m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$276
This Southwest deal was found by Cheapflights users on 5/5. 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 6/47:00 am
ATL
- STL
1 stop4h 50m
Southwest
Thu 6/119:55 am
STL
- ATL
1 stop3h 40m
Southwest
Deal found 5/5![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 5/7. 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 5/267:32 pm
ATL
- ORD
1 stop4h 54m
United Airlines
Fri 5/298:14 pm
ORD
- ATL
Nonstop2h 20m
United Airlines
Deal found 5/7![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 5/5. 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 7/85:11 pm
ATL
- ORD
1 stop4h 20m
Delta
Sat 7/112:31 pm
ORD
- ATL
1 stop6h 25m
Delta
Deal found 5/5![Delta logo]()
$321
This American Airlines deal was found by Cheapflights users on 5/6. 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.
Tue 5/1910:24 am
ATL
- CMI
2 stops9h 00m
American Airlines
Sat 5/236:09 am
CMI
- ATL
1 stop7h 22m
American Airlines
Deal found 5/6![American Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 5/2710:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Fri 5/298:03 pm
RFD
- ATL
1 stop12h 49m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$292
This American Airlines deal was found by Cheapflights users on 5/5. 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 5/216:00 am
ATL
- PIA
1 stop6h 54m
American Airlines
Sun 5/246:13 am
PIA
- ATL
1 stop8h 09m
American Airlines
Deal found 5/5![American Airlines logo]()
$339
This KAYAK deal was found by Cheapflights users on 5/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/93:50 pm
ATL
- ORD
Nonstop2h 14m
Delta
Fri 6/125:22 pm
ORD
- ATL
1 stop4h 46m
Delta
Deal found 5/9![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 5/5. 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 6/23:30 pm
ATL
- PIA
1 stop4h 56m
United Airlines
Tue 6/96:30 am
PIA
- ATL
1 stop4h 52m
United Airlines
Deal found 5/5![United Airlines logo]()
$389
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/3010:48 pm
ATL
- RFD
1 stop12h 49m
Multiple Airlines
Wed 6/34:42 pm
RFD
- ATL
1 stop15h 19m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 5/6. 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 5/227:48 pm
ATL
- PIA
1 stop5h 11m
American Airlines
Mon 5/256:13 am
PIA
- ATL
1 stop5h 34m
American Airlines
Deal found 5/6![American Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 5/6. 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.
Fri 6/59:02 am
ATL
- EVV
Nonstop1h 28m
Delta
Thu 6/116:22 am
EVV
- ATL
Nonstop1h 38m
Delta
Deal found 5/6![Delta logo]()
$349
Last-minute flights from Atlanta to IllinoisDiscover last-minute flight deals from Atlanta to Illinois. Data last updated May 10, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Illinois. Data last updated May 10, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 5/8. 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.
Fri 5/2910:05 am
ATL
- MDW
Nonstop2h 04m
Frontier
Tue 6/26:00 am
MDW
- ATL
Nonstop2h 09m
Frontier
Deal found 5/8![Frontier logo]()
$92
This Cheapflightsfares deal was found by Cheapflights users on 5/9. 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 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Mon 6/15:27 pm
STL
- ATL
Nonstop1h 47m
Frontier
Deal found 5/9![Frontier logo]()
$74
This Super.com deal was found by Cheapflights users on 5/9. 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.
Sat 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Sat 6/135:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 5/9![Frontier logo]()
$82
This Frontier deal was found by Cheapflights users on 5/9. 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 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Thu 6/116:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/9![Frontier logo]()
$83
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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 5/306:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Sat 6/61:29 pm
ORD
- ATL
Nonstop2h 20m
Frontier
Deal found 5/6![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 6/16:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Tue 6/96:55 am
ORD
- ATL
Nonstop2h 32m
Frontier
Deal found 5/7![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 5/9. 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.
Mon 6/19:00 pm
ATL
- MDW
Nonstop2h 02m
Frontier
Thu 6/46:00 am
MDW
- ATL
Nonstop2h 09m
Frontier
Deal found 5/9![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 5/6. 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 6/36:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Wed 6/101:29 pm
ORD
- ATL
Nonstop2h 21m
Frontier
Deal found 5/6![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 5/9. 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 6/410:08 am
ATL
- MDW
Nonstop2h 04m
Frontier
Wed 6/106:00 am
MDW
- ATL
Nonstop2h 19m
Frontier
Deal found 5/9![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 5/6. 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.
Wed 6/108:00 am
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/146:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/6![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/128:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/146:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/5![Frontier logo]()
$91
This Booking.com deal was found by Cheapflights users on 5/7. 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.
Sun 6/214:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sun 6/286:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 5/7![Frontier logo]()
$84
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 May 10, 2026.
Search for one-way flight options from Atlanta to Illinois. Find affordable one-way fares based on user searches. Data last updated May 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 7/304:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 5/6![Frontier logo]()
$27
This Frontier deal was found by Cheapflights users on 5/5. 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 6/18:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 5/5![Frontier logo]()
$28
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 5/264:43 pm
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 5/6![Frontier logo]()
$32
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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.
Wed 5/278:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 5/7![Frontier logo]()
$33
This Frontier deal was found by Cheapflights users on 5/5. 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 5/308:05 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 5/5![Frontier logo]()
$34
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 7/318:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Deal found 5/6![Frontier logo]()
$36
This eDestinos deal was found by Cheapflights users on 5/9. 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.
Mon 6/810:05 am
ATL
- MDW
Nonstop2h 04m
Frontier
Deal found 5/9![Frontier logo]()
$40
This eDestinos deal was found by Cheapflights users on 5/9. 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.
Mon 6/86:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Deal found 5/9![Frontier logo]()
$40
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 6/3010:08 am
ATL
- MDW
Nonstop2h 04m
Frontier
Deal found 5/8![Frontier logo]()
$41
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 8/56:35 am
ATL
- ORD
Nonstop2h 18m
Frontier
Deal found 5/5![Frontier logo]()
$41
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 6/19:00 pm
ATL
- MDW
Nonstop2h 02m
Frontier
Deal found 5/6![Frontier logo]()
$45
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/16:35 am
ATL
- ORD
Nonstop2h 20m
Frontier
Deal found 5/5![Frontier logo]()
$45
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 May 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $74 (Cheapflightsfares) |
One-way from | $27 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $193 |
Good round-trip deal | $142 or less |
Good one-way deal | $82 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 May 10, 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 6/30
2:10 pm-2:50 pm
Nonstop1h 40m
Lambert-St Louis
Sat 7/4
5:00 pm-7:35 pm
Nonstop1h 35m
$117
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Mon 6/8
6:50 am-7:30 am
Nonstop1h 40m
Lambert-St Louis
Mon 6/8
6:50 pm-1:05 am
1 stop5h 15m
$138
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
2:50 pm-8:50 pm
1 stop5h 00m
$138
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 6/6
10:50 am-6:00 pm
2 stops8h 10m
Lambert-St Louis
Sun 6/7
7:55 pm-10:30 pm
Nonstop1h 35m
$143
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 7/3
12:30 pm-3:55 pm
1 stop4h 25m
Lambert-St Louis
Sun 7/5
4:40 pm-12:15 am
1 stop6h 35m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sun 6/28
7:00 pm-10:35 pm
1 stop4h 35m
Lambert-St Louis
Sun 7/5
4:40 pm-12:15 am
1 stop6h 35m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 6/12
7:35 pm-10:50 pm
1 stop4h 15m
Lambert-St Louis
Mon 6/15
5:05 am-12:35 pm
1 stop6h 30m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 7/9
6:15 pm-12:05 am
1 stop6h 50m
Lambert-St Louis
Tue 7/14
3:10 pm-9:00 pm
1 stop4h 50m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 6/19
6:15 pm-11:10 pm
1 stop5h 55m
Lambert-St Louis
Sun 6/21
5:45 am-12:45 pm
1 stop6h 00m
$157
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 6/4
7:00 am-10:50 am
1 stop4h 50m
Lambert-St Louis
Thu 6/11
9:55 am-2:35 pm
1 stop3h 40m
$157
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-MDW
ATL-ORD
ATL-RFD
ATL-PIA
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-MDW
ATL-ORD
ATL-RFD
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 month to book a flight from Atlanta to Illinois?
Currently, September is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $141). Flying from Atlanta to Illinois in June is currently the most expensive (average of $244). 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 May 10, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 14% on flights from Atlanta to Illinois by exploring options for tickets in the morning.
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 May 9, 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.
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 May 10, 2026.
The most flights from ATL to USIL are scheduled on a Friday (92 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (63 on average).
How much does it cost to fly round-trip from Atlanta to Illinois?
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 May 10, 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.
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
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Alternative routes for Atlanta to Illinois
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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 May 10, 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 6 airlines flying from Atlanta to Illinois
Discover the top 6 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 May 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$115 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$159 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$377 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$142 | Average$421 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$143 | Average$325 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$307 | FlexibilityNo cancel fee | On-time63% |