$23+ Cheap flights from Alabama 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ORD
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Cheapest flights from Alabama to IllinoisExplore the most affordable flight options available from Alabama to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
Explore the most affordable flight options available from Alabama to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
This Frontier deal was found by Cheapflights users on 7/29. 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 10/128:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Fri 10/1610:35 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 7/29![Frontier logo]()
$72
This Frontier deal was found by Cheapflights users on 7/31. 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 8/244:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Thu 8/276:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/31![Frontier logo]()
$76
This Super.com deal was found by Cheapflights users on 7/27. 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 8/128:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Mon 8/174:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 7/27![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/1412:25 pm
ATL
- STL
Nonstop1h 45m
Frontier
Fri 9/182:29 pm
STL
- ATL
Nonstop1h 41m
Frontier
Deal found 7/31![Frontier logo]()
$78
This Frontier deal was found by Cheapflights users on 7/26. 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 8/128:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Sat 8/154:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 7/26![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 7/30. 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 8/214:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 8/236:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/30![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 7/29. 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 8/274:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sat 8/296:45 pm
STL
- ATL
1 stop11h 14m
Frontier
Deal found 7/29![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/1612:25 pm
ATL
- STL
Nonstop1h 45m
Frontier
Fri 9/182:29 pm
STL
- ATL
Nonstop1h 41m
Frontier
Deal found 7/31![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 7/31. 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 9/44:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Mon 9/76:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/31![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 7/30. 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 11/1210:07 am
ATL
- STL
1 stop10h 32m
Frontier
Sun 11/1510:35 am
STL
- ATL
Nonstop1h 40m
Frontier
Deal found 7/30![Frontier logo]()
$97
This Booking.com deal was found by Cheapflights users on 7/30. 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.
Tue 8/2511:07 am
ATL
- STL
1 stop31h 43m
Frontier
Thu 8/276:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/30![Frontier logo]()
$98
This Super.com deal was found by Cheapflights users on 7/30. 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 8/272:32 pm
ATL
- MDW
1 stop6h 59m
Frontier
Thu 9/36:05 am
MDW
- ATL
Nonstop2h 17m
Frontier
Deal found 7/30![Frontier logo]()
$151
Best flights from Alabama to IllinoisDiscover carefully curated flight deals from Alabama to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
Discover carefully curated flight deals from Alabama to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This Delta deal was found by Cheapflights users on 7/27. 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 8/255:45 pm
ATL
- STL
Nonstop1h 42m
Delta
Tue 9/17:00 am
STL
- ATL
Nonstop1h 37m
Delta
Deal found 7/27![Delta logo]()
$117
This Southwest deal was found by Cheapflights users on 7/30. 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 8/257:00 am
ATL
- STL
Nonstop1h 40m
Southwest
Thu 8/273:15 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 7/30![Southwest logo]()
$137
This Delta deal was found by Cheapflights users on 7/27. 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 9/225:00 pm
ATL
- STL
Nonstop1h 40m
Delta
Sat 9/265:46 pm
STL
- ATL
Nonstop1h 43m
Delta
Deal found 7/27![Delta logo]()
$117
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 8/2810:05 am
ATL
- ORD
Nonstop2h 18m
United Airlines
Mon 9/77:00 am
ORD
- ATL
Nonstop2h 12m
United Airlines
Deal found 7/27![United Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 7/29. 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 8/2912:00 pm
ATL
- STL
Nonstop1h 35m
Southwest
Sat 9/51:15 pm
STL
- ATL
2 stops6h 25m
Southwest
Deal found 7/29![Southwest logo]()
$142
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/2612:23 pm
BHM
- ORD
Nonstop2h 30m
American Airlines
Fri 8/289:10 pm
ORD
- BHM
Nonstop2h 01m
American Airlines
Deal found 7/26![American Airlines logo]()
$298
This Delta deal was found by Cheapflights users on 7/29. 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 8/2910:50 pm
ATL
- STL
Nonstop1h 41m
Delta
Sat 9/55:23 pm
STL
- ATL
Nonstop1h 51m
Delta
Deal found 7/29![Delta logo]()
$137
This Southwest deal was found by Cheapflights users on 7/30. 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 9/177:05 am
ATL
- STL
1 stop4h 05m
Southwest
Thu 9/176:50 pm
STL
- ATL
Nonstop1h 30m
Southwest
Deal found 7/30![Southwest logo]()
$147
This Delta deal was found by Cheapflights users on 7/27. 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 9/2512:45 pm
ATL
- STL
Nonstop1h 38m
Delta
Sun 9/276:54 pm
STL
- ATL
Nonstop1h 41m
Delta
Deal found 7/27![Delta logo]()
$137
This Delta deal was found by Cheapflights users on 7/30. 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 9/138:55 am
ATL
- STL
Nonstop1h 39m
Delta
Sun 9/206:00 am
STL
- ATL
Nonstop1h 35m
Delta
Deal found 7/30![Delta logo]()
$137
This Delta deal was found by Cheapflights users on 7/26. 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 8/228:40 am
ATL
- STL
Nonstop1h 40m
Delta
Sun 8/237:00 am
STL
- ATL
Nonstop1h 37m
Delta
Deal found 7/26![Delta logo]()
$147
This United Airlines deal was found by Cheapflights users on 7/30. 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 10/173:46 pm
ATL
- ORD
Nonstop2h 20m
United Airlines
Sun 10/187:00 am
ORD
- ATL
Nonstop2h 12m
United Airlines
Deal found 7/30![United Airlines logo]()
$244
This Southwest deal was found by Cheapflights users on 7/29. 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 10/711:30 am
ATL
- MDW
Nonstop1h 55m
Southwest
Mon 10/125:00 am
MDW
- ATL
1 stop6h 30m
Southwest
Deal found 7/29![Southwest logo]()
$225
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/246:00 am
CHA
- ORD
Nonstop2h 05m
United Airlines
Sun 9/276:50 am
ORD
- CHA
Nonstop1h 52m
United Airlines
Deal found 7/31![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 7/29. 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 10/288:20 am
ATL
- MDW
Nonstop1h 55m
Southwest
Mon 11/212:45 pm
MDW
- ATL
2 stops5h 35m
Southwest
Deal found 7/29![Southwest logo]()
$230
This Delta deal was found by Cheapflights users on 7/30. 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 9/512:33 pm
HSV
- ORD
1 stop6h 26m
Delta
Sun 9/65:30 am
ORD
- HSV
1 stop6h 16m
Delta
Deal found 7/30![Delta logo]()
$191
This Southwest deal was found by Cheapflights users on 7/26. 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 9/111:30 am
ATL
- MDW
1 stop3h 25m
Southwest
Wed 9/23:50 pm
MDW
- ATL
Nonstop1h 50m
Southwest
Deal found 7/26![Southwest logo]()
$231
This Delta deal was found by Cheapflights users on 7/27. 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 9/114:50 pm
HSV
- ORD
1 stop7h 09m
Delta
Sun 9/205:30 am
ORD
- HSV
1 stop6h 26m
Delta
Deal found 7/27![Delta logo]()
$198
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/196:16 pm
BHM
- ORD
Nonstop2h 24m
United Airlines
Fri 8/2110:25 am
ORD
- BHM
Nonstop2h 07m
United Airlines
Deal found 7/29![United Airlines logo]()
$298
This KAYAK deal was found by Cheapflights users on 7/29. 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 8/1710:21 am
ATL
- ORD
1 stop7h 27m
American Airlines
Thu 8/2011:29 am
ORD
- ATL
Nonstop2h 00m
American Airlines
Deal found 7/29![American Airlines logo]()
$365
This Southwest deal was found by Cheapflights users on 7/28. 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 8/2010:10 am
ATL
- MDW
Nonstop1h 55m
Southwest
Mon 8/247:55 am
MDW
- ATL
2 stops5h 45m
Southwest
Deal found 7/28![Southwest logo]()
$236
This Delta deal was found by Cheapflights users on 7/27. 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 9/186:30 pm
HSV
- ORD
1 stop5h 29m
Delta
Mon 9/215:30 am
ORD
- HSV
1 stop6h 26m
Delta
Deal found 7/27![Delta logo]()
$205
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 10/97:07 pm
CHA
- ORD
Nonstop2h 12m
United Airlines
Sun 10/119:20 pm
ORD
- CHA
Nonstop1h 50m
United Airlines
Deal found 7/27![United Airlines logo]()
$301
This Southwest deal was found by Cheapflights users on 7/27. 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 8/278:00 am
ATL
- MDW
Nonstop1h 50m
Southwest
Thu 8/273:10 pm
MDW
- ATL
Nonstop1h 50m
Southwest
Deal found 7/27![Southwest logo]()
$244
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/155:18 pm
PNS
- ORD
Nonstop2h 42m
United Airlines
Sat 9/1910:40 am
ORD
- PNS
Nonstop2h 29m
United Airlines
Deal found 7/28![United Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 7/28. 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 8/276:17 pm
HSV
- ORD
1 stop5h 40m
Delta
Thu 9/38:48 am
ORD
- HSV
1 stop5h 27m
Delta
Deal found 7/28![Delta logo]()
$221
This Southwest deal was found by Cheapflights users on 7/28. 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 9/308:00 am
ATL
- MDW
2 stops6h 05m
Southwest
Sun 10/45:05 am
MDW
- ATL
Nonstop1h 45m
Southwest
Deal found 7/28![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/106:00 am
CHA
- ORD
Nonstop1h 59m
United Airlines
Mon 9/146:59 am
ORD
- CHA
Nonstop1h 55m
United Airlines
Deal found 7/31![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 7/27. 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 8/56:17 pm
HSV
- ORD
1 stop5h 40m
Delta
Sat 8/88:05 am
ORD
- HSV
1 stop5h 20m
Delta
Deal found 7/27![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 7/27. 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 9/85:20 am
BHM
- MDW
Nonstop1h 50m
Southwest
Sat 9/1210:05 am
MDW
- BHM
Nonstop1h 40m
Southwest
Deal found 7/27![Southwest logo]()
$257
Last-minute flights from Alabama to IllinoisDiscover last-minute flight deals from Alabama to Illinois. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from Alabama to Illinois. Data last updated August 1, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 7/27. 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 8/128:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Mon 8/174:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 7/27![Frontier logo]()
$77
This Frontier deal was found by Cheapflights users on 7/26. 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 8/128:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Sat 8/154:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 7/26![Frontier logo]()
$82
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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.
Thu 8/204:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Mon 8/246:45 pm
STL
- ATL
1 stop18h 05m
Frontier
Deal found 7/31![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/206:35 am
ATL
- ORD
Nonstop2h 18m
Frontier
Thu 8/271:03 pm
ORD
- ATL
1 stop6h 46m
Frontier
Deal found 7/31![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 7/30. 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 8/214:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 8/236:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/30![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 7/30. 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 8/225:01 am
ATL
- STL
1 stop12h 10m
Frontier
Mon 8/246:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/30![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 7/31. 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 8/244:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Fri 8/286:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/31![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 7/31. 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 8/2412:34 pm
ATL
- STL
1 stop7h 39m
Frontier
Sun 8/306:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/31![Frontier logo]()
$105
This Booking.com deal was found by Cheapflights users on 7/30. 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.
Tue 8/2511:07 am
ATL
- STL
1 stop31h 43m
Frontier
Thu 8/276:17 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 7/30![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 7/29. 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 8/274:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sat 8/296:45 pm
STL
- ATL
1 stop11h 14m
Frontier
Deal found 7/29![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 7/30. 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 8/272:32 pm
ATL
- MDW
1 stop6h 59m
Frontier
Thu 9/36:05 am
MDW
- ATL
Nonstop2h 17m
Frontier
Deal found 7/30![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/304:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Tue 9/15:27 pm
STL
- ATL
1 stop19h 00m
Frontier
Deal found 7/31![Frontier logo]()
$102
One-way flights from Alabama to IllinoisSearch for one-way flight options from Alabama to Illinois. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
Search for one-way flight options from Alabama to Illinois. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Super.com deal was found by Cheapflights users on 7/26. 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 8/314:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 7/26![Frontier logo]()
$23
This Trip.com deal was found by Cheapflights users on 7/29. 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.
Mon 8/244:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 7/29![Frontier logo]()
$24
This Super.com deal was found by Cheapflights users on 7/26. 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 8/284:28 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 7/26![Frontier logo]()
$28
This Booking.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/178:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Deal found 7/27![Frontier logo]()
$29
This Super.com deal was found by Cheapflights users on 7/27. 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 10/288:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 7/27![Frontier logo]()
$33
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/258:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 7/28![Frontier logo]()
$38
This Super.com deal was found by Cheapflights users on 7/26. 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 10/298:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 7/26![Frontier logo]()
$44
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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 8/114:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 7/30![Frontier logo]()
$49
This Super.com deal was found by Cheapflights users on 7/29. 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 8/128:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Deal found 7/29![Frontier logo]()
$54
This Southwest deal was found by Cheapflights users on 7/29. 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 9/268:45 am
ATL
- STL
Nonstop1h 40m
Southwest
Deal found 7/29![Southwest logo]()
$59
This Flightnetwork deal was found by Cheapflights users on 7/30. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:32 pm
ATL
- ORD
1 stop6h 43m
Frontier
Deal found 7/30![Frontier logo]()
$72
This Super.com deal was found by Cheapflights users on 7/31. 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 9/224:50 pm
ATL
- MDW
Nonstop1h 56m
Frontier
Deal found 7/31![Frontier logo]()
$74
Find flight deals from Alabama to Illinois
Keep the following information in mind while searching for Alabama to Illinois flight deals. Data was last updated August 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $72 (Frontier) |
One-way from | $23 (Super.com) |
Popular in | January |
Cheapest in | February |
Average price | $389 |
Good round-trip deal | $349 or less |
Good one-way deal | $194 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Alabama 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 August 1, 2026.
Use the filters below to find and compare flights from Alabama 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 8/25
5:45 pm-6:27 pm
Nonstop1h 42m
Lambert-St Louis
Tue 9/1
7:00 am-9:37 am
Nonstop1h 37m
$117
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 9/22
5:00 pm-5:40 pm
Nonstop1h 40m
Lambert-St Louis
Sat 9/26
5:46 pm-8:29 pm
Nonstop1h 43m
$117
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 8/25
7:00 am-7:40 am
Nonstop1h 40m
Lambert-St Louis
Thu 8/27
3:15 pm-5:50 pm
Nonstop1h 35m
$137
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/29
10:50 pm-11:31 pm
Nonstop1h 41m
Lambert-St Louis
Sat 9/5
5:23 pm-8:14 pm
Nonstop1h 51m
$137
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 9/25
12:45 pm-1:23 pm
Nonstop1h 38m
Lambert-St Louis
Sun 9/27
6:54 pm-9:35 pm
Nonstop1h 41m
$137
Quickest round-trip
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sun 9/13
8:55 am-9:34 am
Nonstop1h 39m
Lambert-St Louis
Sun 9/20
6:00 am-8:35 am
Nonstop1h 35m
$137
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/29
12:00 pm-12:35 pm
Nonstop1h 35m
Lambert-St Louis
Sat 9/5
1:15 pm-8:40 pm
2 stops6h 25m
$142
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 9/17
7:05 am-10:10 am
1 stop4h 05m
Lambert-St Louis
Thu 9/17
6:50 pm-9:20 pm
Nonstop1h 30m
$147
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 8/22
8:40 am-9:20 am
Nonstop1h 40m
Lambert-St Louis
Sun 8/23
7:00 am-9:37 am
Nonstop1h 37m
$147
HuntsvilleChicago
HSV - ORD
HSVORD
Huntsville
Sat 9/5
12:33 pm-6:59 pm
1 stop6h 26m
Chicago O'Hare Intl
Sun 9/6
5:30 am-11:46 am
1 stop6h 16m
$191
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Alabama to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Alabama with our price prediction graph.
ATL-STL
ATL-ORD
ATL-MDW
PNS-ORD
BHM-ORD
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 Alabama to Illinois
USAL-USIL
ATL-STL
ATL-ORD
ATL-MDW
PNS-ORD
What is the cheapest month to book a flight from Alabama to Illinois?
Currently, February is the cheapest month in which you can book a flight from Alabama to Illinois (average of $296). Flying from Alabama to Illinois in July is currently the most expensive (average of $429). 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 AL to IL?
Find hourly flight availability from Alabama 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 August 1, 2026.
One of the essential ways to save on airfare from Alabama to Illinois is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 30% on airfare.
Weekly flight availability from Alabama to Illinois
Explore weekly flight availability from Alabama 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 August 1, 2026.
The most flights from USAL to USIL are scheduled on a Monday (14 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Alabama to Illinois?
Airfare is below average for this route at the moment.
Alabama to Illinois flights typically cost between $351 and $430 in October.The cheapest round-trip price found within the last 5 days was $219 on Multiple Airlines (Oct 2-Oct 5).
How far ahead should I book a flight from Alabama to Illinois?
To ensure you get the cheapest price possible for a flight from Alabama to Illinois, you should look to book at least 83 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.
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 August 1, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Alabama to Illinois to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Alabama 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 Alabama 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 Alabama to Illinois by cabin class
Find flights from Alabama to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Alabama and Illinois flights
Browse other Alabama and Illinois flight options. Last updated on August 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Alabama after your stay in Illinois
Alabama to Illinois flights
Consider these flights traveling from Alabama to Illinois.
Top 5 airlines flying from Alabama to Illinois
Discover the top 5 airlines that operate flights from Alabama 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 August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$134 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$209 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$209 | Average$377 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$260 | Average$399 | FlexibilityNo cancel fee | On-time63% |