$28+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ORD
Apr 9 — Apr 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 March 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 March 10, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 3/6. 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 4/226:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Mon 4/278:23 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/6![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 3/10. 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 3/319:41 am
ATL
- STL
Nonstop1h 51m
Frontier
Tue 4/711:21 am
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/10![Frontier logo]()
$66
This Frontier deal was found by Cheapflights users on 3/5. 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 3/269:40 am
ATL
- STL
Nonstop1h 51m
Frontier
Tue 3/3111:27 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 3/5![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/226:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Fri 4/248:23 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/6![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/26:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Wed 5/68:13 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/10![Frontier logo]()
$78
This Frontier deal was found by Cheapflights users on 3/10. 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 3/319:41 am
ATL
- STL
Nonstop1h 51m
Frontier
Thu 4/26:29 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/10![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 3/9. 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.
Tue 3/317:50 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Sat 4/46:40 am
MDW
- ATL
Nonstop2h 15m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/9. 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.
Tue 3/315:06 pm
ATL
- ORD
Nonstop2h 27m
Frontier
Sat 4/45:30 am
ORD
- ATL
Nonstop2h 09m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:50 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Thu 3/266:05 am
MDW
- ATL
Nonstop2h 26m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 am
ATL
- ORD
Nonstop2h 23m
Frontier
Thu 3/265:01 am
ORD
- ATL
Nonstop2h 17m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 3/8. 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.
Sat 4/119:25 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Tue 4/146:10 am
MDW
- ATL
Nonstop2h 15m
Frontier
Deal found 3/8![Frontier logo]()
$82
This Frontier deal was found by Cheapflights users on 3/10. 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 3/317:00 am
ATL
- ORD
Nonstop2h 23m
Frontier
Tue 3/317:39 pm
ORD
- ATL
Nonstop2h 22m
Frontier
Deal found 3/10![Frontier logo]()
$82
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 March 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 March 10, 2026.
This Delta deal was found by Cheapflights users on 3/6. 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.
Sat 4/183:31 pm
ATL
- MDW
Nonstop1h 55m
Delta
Mon 4/206:00 am
MDW
- ATL
Nonstop2h 00m
Delta
Deal found 3/6![Delta logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 8/612:35 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sun 8/92:17 pm
STL
- ATL
Nonstop1h 52m
Frontier
Deal found 3/5![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/810:44 pm
ATL
- RFD
1 stop12h 03m
Multiple Airlines
Mon 4/137:09 pm
RFD
- ATL
1 stop14h 29m
Multiple Airlines
Deal found 3/5![Multiple Airlines logo]()
$188
This Southwest deal was found by Cheapflights users on 3/7. 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.
Sat 4/186:40 am
ATL
- MDW
2 stops8h 55m
Southwest
Mon 4/207:50 am
MDW
- ATL
1 stop6h 00m
Southwest
Deal found 3/7![Southwest logo]()
$189
This United Airlines deal was found by Cheapflights users on 3/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:24 pm
ATL
- ORD
Nonstop2h 22m
United Airlines
Sun 5/1010:30 am
ORD
- ATL
Nonstop2h 05m
United Airlines
Deal found 3/6![United Airlines logo]()
$197
This Spirit deal was found by Cheapflights users on 3/6. 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 Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/215:56 pm
ATL
- ORD
1 stop6h 21m
Spirit Airlines
Mon 3/234:36 pm
ORD
- ATL
1 stop6h 23m
Spirit Airlines
Deal found 3/6![Spirit Airlines logo]()
$199
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:48 pm
ATL
- PIA
1 stop5h 11m
American Airlines
Tue 6/24:20 pm
PIA
- ATL
1 stop6h 38m
American Airlines
Deal found 3/9![American Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 3/7. 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.
Wed 4/156:05 am
ATL
- ORD
2 stops7h 45m
Southwest
Sat 4/1811:50 am
ORD
- ATL
1 stop7h 25m
Southwest
Deal found 3/7![Southwest logo]()
$189
This Delta deal was found by Cheapflights users on 3/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:28 am
ATL
- ORD
Nonstop2h 09m
Delta
Sun 4/195:15 am
ORD
- ATL
Nonstop2h 00m
Delta
Deal found 3/7![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Mon 3/236:00 am
ATL
- EVV
1 stop14h 06m
Multiple Airlines
Fri 3/277:46 pm
EVV
- ATL
1 stop27h 53m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$198
This Southwest deal was found by Cheapflights users on 3/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:25 pm
ATL
- STL
1 stop5h 00m
Southwest
Wed 4/86:45 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 3/9![Southwest logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/2210:45 pm
ATL
- RFD
1 stop12h 02m
Multiple Airlines
Fri 4/248:35 pm
RFD
- ATL
1 stop21h 48m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$199
This Delta deal was found by Cheapflights users on 3/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:23 am
ATL
- STL
Nonstop1h 42m
Delta
Thu 4/26:00 am
STL
- ATL
Nonstop1h 41m
Delta
Deal found 3/8![Delta logo]()
$201
This United Airlines deal was found by Cheapflights users on 3/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:15 am
ATL
- ORD
Nonstop2h 19m
United Airlines
Sun 4/126:59 am
ORD
- ATL
Nonstop2h 16m
United Airlines
Deal found 3/6![United Airlines logo]()
$230
This Frontier deal was found by Cheapflights users on 3/5. 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.
Fri 3/2012:43 pm
ATL
- STL
Nonstop1h 51m
Frontier
Tue 3/2411:27 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 3/5![Frontier logo]()
$236
This Southwest deal was found by Cheapflights users on 3/6. 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.
Mon 5/1111:20 am
ATL
- MDW
Nonstop2h 00m
Southwest
Sat 5/1612:55 pm
MDW
- ATL
2 stops7h 00m
Southwest
Deal found 3/6![Southwest logo]()
$212
This Delta deal was found by Cheapflights users on 3/6. 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 4/98:23 am
ATL
- STL
Nonstop1h 42m
Delta
Fri 4/107:03 am
STL
- ATL
Nonstop1h 37m
Delta
Deal found 3/6![Delta logo]()
$218
This United Airlines deal was found by Cheapflights users on 3/5. 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.
Thu 4/28:15 am
ATL
- ORD
Nonstop2h 19m
United Airlines
Sat 4/410:30 am
ORD
- ATL
Nonstop2h 05m
United Airlines
Deal found 3/5![United Airlines logo]()
$248
This Southwest deal was found by Cheapflights users on 3/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:45 pm
ATL
- MDW
1 stop3h 45m
Southwest
Sun 5/37:45 am
MDW
- ATL
1 stop5h 50m
Southwest
Deal found 3/9![Southwest logo]()
$217
This American Airlines deal was found by Cheapflights users on 3/5. 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 4/27:46 am
ATL
- PIA
1 stop6h 01m
American Airlines
Thu 4/91:22 pm
PIA
- ATL
2 stops9h 37m
American Airlines
Deal found 3/5![American Airlines logo]()
$294
This Southwest deal was found by Cheapflights users on 3/6. 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 4/108:05 pm
ATL
- STL
Nonstop1h 50m
Southwest
Mon 4/134:30 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 3/6![Southwest logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sat 4/1110:50 pm
ATL
- RFD
1 stop11h 57m
Multiple Airlines
Mon 4/138:35 pm
RFD
- ATL
2 stops20h 47m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/7. 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.
Sat 5/98:00 am
ATL
- PIA
1 stop7h 04m
United Airlines
Tue 5/121:35 pm
PIA
- ATL
1 stop6h 46m
United Airlines
Deal found 3/7![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 3/6. 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.
Mon 3/3011:15 pm
ATL
- STL
Nonstop1h 43m
Delta
Fri 4/34:21 pm
STL
- ATL
Nonstop1h 31m
Delta
Deal found 3/6![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 3/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:40 am
ATL
- MDW
2 stops7h 10m
Southwest
Mon 4/2710:25 am
MDW
- ATL
1 stop4h 25m
Southwest
Deal found 3/9![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 3/5. 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 5/198:00 am
ATL
- PIA
1 stop7h 04m
United Airlines
Tue 5/265:33 pm
PIA
- ATL
1 stop4h 57m
United Airlines
Deal found 3/5![United Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 3/5. 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 4/256:05 am
ATL
- MDW
2 stops7h 05m
Southwest
Sun 4/265:15 am
MDW
- ATL
1 stop5h 45m
Southwest
Deal found 3/5![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 3/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/27:05 pm
ATL
- STL
1 stop5h 14m
United Airlines
Wed 5/66:00 am
STL
- ATL
1 stop8h 01m
United Airlines
Deal found 3/8![United Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/295:10 am
ATL
- BMI
2 stops28h 33m
Multiple Airlines
Sun 5/39:33 am
BMI
- ATL
1 stop12h 56m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 3/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:17 am
ATL
- SPI
1 stop5h 02m
American Airlines
Mon 4/132:49 pm
SPI
- ATL
1 stop6h 34m
American Airlines
Deal found 3/7![American Airlines logo]()
$391
Last-minute flights from Atlanta to IllinoisDiscover last-minute flight deals from Atlanta to Illinois. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Atlanta to Illinois. Data last updated March 10, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:50 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Thu 3/266:05 am
MDW
- ATL
Nonstop2h 26m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 3/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:00 am
ATL
- ORD
Nonstop2h 23m
Frontier
Thu 3/265:01 am
ORD
- ATL
Nonstop2h 17m
Frontier
Deal found 3/8![Frontier logo]()
$81
This Frontier deal was found by Cheapflights users on 3/5. 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 3/269:40 am
ATL
- STL
Nonstop1h 51m
Frontier
Tue 3/3111:27 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 3/5![Frontier logo]()
$68
This Frontier deal was found by Cheapflights users on 3/10. 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 3/319:41 am
ATL
- STL
Nonstop1h 51m
Frontier
Tue 4/711:21 am
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/10![Frontier logo]()
$66
This Frontier deal was found by Cheapflights users on 3/10. 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 3/319:41 am
ATL
- STL
Nonstop1h 51m
Frontier
Thu 4/26:29 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/10![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 3/9. 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.
Tue 3/317:50 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Sat 4/46:40 am
MDW
- ATL
Nonstop2h 15m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/9. 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.
Tue 3/315:06 pm
ATL
- ORD
Nonstop2h 27m
Frontier
Sat 4/45:30 am
ORD
- ATL
Nonstop2h 09m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/10. 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 3/317:00 am
ATL
- ORD
Nonstop2h 23m
Frontier
Tue 3/317:39 pm
ORD
- ATL
Nonstop2h 22m
Frontier
Deal found 3/10![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 3/8. 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.
Sat 4/119:25 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Tue 4/146:10 am
MDW
- ATL
Nonstop2h 15m
Frontier
Deal found 3/8![Frontier logo]()
$82
This Cheapflightsfares deal was found by Cheapflights users on 3/6. 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 4/226:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Mon 4/278:23 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/6![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/226:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Fri 4/248:23 pm
STL
- ATL
Nonstop1h 46m
Frontier
Deal found 3/6![Frontier logo]()
$77
This Cheapflightsfares deal was found by Cheapflights users on 3/5. 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.
Fri 4/249:15 pm
ATL
- ORD
Nonstop2h 24m
Frontier
Sun 4/265:50 am
ORD
- ATL
Nonstop2h 09m
Frontier
Deal found 3/5![Frontier logo]()
$83
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 March 10, 2026.
Search for one-way flight options from Atlanta to Illinois. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/296:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$28
This Priceline deal was found by Cheapflights users on 3/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:40 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$29
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/66:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/10![Frontier logo]()
$32
This Priceline deal was found by Cheapflights users on 3/10. 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.
Wed 4/156:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/10![Frontier logo]()
$33
This Priceline deal was found by Cheapflights users on 3/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$34
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/239:40 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$39
This Super.com deal was found by Cheapflights users on 3/5. 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.
Thu 4/169:40 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$40
This Trip.com deal was found by Cheapflights users on 3/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/6![Frontier logo]()
$42
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/206:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/10![Frontier logo]()
$45
This Frontier deal was found by Cheapflights users on 3/10. 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 4/94:44 pm
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/10![Frontier logo]()
$46
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Fri 4/246:00 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 3/5![Frontier logo]()
$48
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Tue 3/249:07 am
ATL
- ORD
1 stop11h 44m
Spirit Airlines
Deal found 3/9![Spirit Airlines logo]()
$48
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 March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $63 (Cheapflightsfares) |
One-way from | $28 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $189 |
Good round-trip deal | $120 or less |
Good one-way deal | $122 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 March 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
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Sat 4/18
3:31 pm-4:26 pm
Nonstop1h 55m
Chicago Midway
Mon 4/20
6:00 am-9:00 am
Nonstop2h 00m
$177
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 8/6
12:35 pm-1:22 pm
Nonstop1h 47m
Lambert-St Louis
Sun 8/9
2:17 pm-5:09 pm
Nonstop1h 52m
$186
AtlantaChicago
ATL - RFD
ATLRFD
Atlanta Hartsfield-Jackson
Wed 4/8
10:44 pm-9:47 am
1 stop12h 03m
Chicago Greater Rockford
Mon 4/13
7:09 pm-10:38 am
1 stop14h 29m
$188
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Sat 4/18
6:40 am-2:35 pm
2 stops8h 55m
Chicago Midway
Mon 4/20
7:50 am-2:50 pm
1 stop6h 00m
$189
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Wed 4/15
6:05 am-12:50 pm
2 stops7h 45m
Chicago O'Hare Intl
Sat 4/18
11:50 am-8:15 pm
1 stop7h 25m
$189
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Thu 5/7
1:24 pm-2:46 pm
Nonstop2h 22m
Chicago O'Hare Intl
Sun 5/10
10:30 am-1:35 pm
Nonstop2h 05m
$197
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Thu 4/16
7:28 am-8:37 am
Nonstop2h 09m
Chicago O'Hare Intl
Sun 4/19
5:15 am-8:15 am
Nonstop2h 00m
$197
AtlantaEvansville
ATL - EVV
ATLEVV
Atlanta Hartsfield-Jackson
Mon 3/23
6:00 am-7:06 pm
1 stop14h 06m
Evansville Dress Regional
Fri 3/27
7:46 pm-12:39 am
1 stop27h 53m
$198
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Sat 3/21
5:56 pm-11:17 pm
1 stop6h 21m
Chicago O'Hare Intl
Mon 3/23
4:36 pm-11:59 pm
1 stop6h 23m
$199
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Mon 4/6
7:25 pm-11:25 pm
1 stop5h 00m
Lambert-St Louis
Wed 4/8
6:45 pm-9:20 pm
Nonstop1h 35m
$199
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-MDW
ATL-ORD
ATL-RFD
ATL-PIA
ATL-STL
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-MDW
ATL-ORD
ATL-RFD
ATL-PIA
What is the cheapest month to book a flight from Atlanta to Illinois?
Currently, January is the cheapest month in which you can book a flight from Atlanta to Illinois (average of $55). Flying from Atlanta to Illinois in June is currently the most expensive (average of $80). 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 March 10, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 19% on flights from Atlanta to Illinois by exploring options for tickets in the evening.
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 February 21, 2026.
Travelers seeking maximum savings on their Atlanta to Illinois flight should consider departing on Wednesday 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 March 10, 2026.
The most flights from ATL to USIL are scheduled on a Monday (78 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 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 March 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.
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Overall
8.0
Entertainment
7.5
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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.
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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 March 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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$46 | Average$115 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$147 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$338 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$139 | Average$309 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$143 | Average$384 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$281 | FlexibilityNo cancel fee | On-time63% |