$38+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
BHM — ORD
Jul 15 — Jul 221
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 June 15, 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 June 15, 2026.
This Frontier deal was found by Cheapflights users on 6/10. 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 8/114:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Fri 8/215:33 pm
STL
- ATL
Nonstop1h 52m
Frontier
Deal found 6/10![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 8/58:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Thu 8/206:33 pm
STL
- ATL
Nonstop1h 52m
Frontier
Deal found 6/15![Frontier logo]()
$75
This Frontier deal was found by Cheapflights users on 6/10. 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.
Mon 7/68:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Tue 7/76:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/10![Frontier logo]()
$76
This Frontier deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/13![Frontier logo]()
$77
This Super.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/266:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/12![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Sat 7/45:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 6/11![Frontier logo]()
$91
This Frontier deal was found by Cheapflights users on 6/10. 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 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sat 7/45:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 6/10![Frontier logo]()
$92
This Booking.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/12![Frontier logo]()
$93
This Super.com deal was found by Cheapflights users on 6/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/124:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Thu 7/166:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/10![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
Sun 7/124:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Wed 7/154:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/12![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Mon 9/75:33 pm
STL
- ATL
Nonstop1h 52m
Frontier
Deal found 6/12![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/13![Frontier logo]()
$105
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 June 15, 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 June 15, 2026.
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:40 am
ATL
- STL
Nonstop1h 37m
Delta
Tue 7/216:58 pm
STL
- ATL
Nonstop1h 46m
Delta
Deal found 6/11![Delta logo]()
$117
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/287:40 pm
ATL
- STL
Nonstop1h 50m
Southwest
Wed 7/293:35 pm
STL
- ATL
1 stop5h 20m
Southwest
Deal found 6/10![Southwest logo]()
$137
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 8/186:15 am
CHA
- ORD
Nonstop2h 05m
United Airlines
Tue 8/256:59 am
ORD
- CHA
Nonstop1h 52m
United Airlines
Deal found 6/14![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/1110:39 pm
ATL
- STL
Nonstop1h 41m
Delta
Mon 7/139:24 am
STL
- ATL
Nonstop1h 38m
Delta
Deal found 6/12![Delta logo]()
$127
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/33:37 pm
HSV
- ORD
1 stop5h 45m
American Airlines
Mon 7/610:32 pm
ORD
- HSV
Nonstop1h 49m
American Airlines
Deal found 6/10![American Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/107:43 am
ATL
- STL
Nonstop1h 36m
Delta
Sat 7/116:00 am
STL
- ATL
Nonstop1h 38m
Delta
Deal found 6/12![Delta logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Tue 7/2811:40 am
HSV
- ORD
2 stops20h 13m
Multiple Airlines
Thu 7/305:13 pm
ORD
- HSV
1 stop21h 24m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:35 pm
ATL
- MDW
Nonstop1h 55m
Southwest
Tue 8/1812:45 pm
MDW
- ATL
2 stops5h 50m
Southwest
Deal found 6/10![Southwest logo]()
$199
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/29:33 pm
ATL
- STL
Nonstop1h 45m
Delta
Mon 7/61:39 pm
STL
- ATL
Nonstop1h 39m
Delta
Deal found 6/10![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 7/108:20 pm
ATL
- STL
Nonstop1h 40m
Southwest
Fri 7/174:25 pm
STL
- ATL
Nonstop1h 35m
Southwest
Deal found 6/12![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/67:30 am
ATL
- ORD
Nonstop2h 14m
Delta
Mon 8/105:30 am
ORD
- ATL
Nonstop1h 59m
Delta
Deal found 6/11![Delta logo]()
$189
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/3111:29 am
ATL
- ORD
Nonstop2h 23m
United Airlines
Sun 8/27:12 am
ORD
- ATL
Nonstop2h 15m
United Airlines
Deal found 6/14![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 8/68:00 am
ATL
- MDW
Nonstop1h 50m
Southwest
Mon 8/107:55 am
MDW
- ATL
1 stop3h 50m
Southwest
Deal found 6/11![Southwest logo]()
$221
This Southwest deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 9/33:25 pm
ATL
- MDW
1 stop3h 25m
Southwest
Tue 9/85:55 pm
MDW
- ATL
Nonstop1h 55m
Southwest
Deal found 6/14![Southwest logo]()
$228
This Southwest deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 7/106:50 am
ATL
- STL
Nonstop1h 40m
Southwest
Sat 7/113:45 pm
STL
- ATL
2 stops7h 05m
Southwest
Deal found 6/14![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
CHA
- ORD
Nonstop1h 59m
United Airlines
Thu 7/236:55 am
ORD
- CHA
Nonstop1h 49m
United Airlines
Deal found 6/13![United Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2810:43 am
HSV
- ORD
Nonstop2h 17m
American Airlines
Thu 7/3012:05 pm
ORD
- HSV
1 stop7h 02m
American Airlines
Deal found 6/10![American Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 8/279:36 pm
ATL
- MDW
Nonstop2h 00m
Delta
Mon 8/314:39 pm
MDW
- ATL
Nonstop2h 06m
Delta
Deal found 6/12![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/132:40 pm
ATL
- MDW
1 stop5h 40m
Southwest
Mon 8/177:55 am
MDW
- ATL
2 stops5h 45m
Southwest
Deal found 6/10![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 7/186:00 am
CHA
- ORD
Nonstop1h 59m
United Airlines
Sun 7/266:55 am
ORD
- CHA
Nonstop1h 49m
United Airlines
Deal found 6/13![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/43:59 pm
ATL
- ORD
Nonstop2h 18m
Delta
Tue 7/75:30 am
ORD
- ATL
Nonstop1h 59m
Delta
Deal found 6/11![Delta logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” 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 7/1710:47 am
HSV
- ORD
2 stops9h 06m
Multiple Airlines
Sun 7/198:05 am
ORD
- HSV
1 stop24h 49m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/43:25 pm
ATL
- STL
1 stop5h 35m
Southwest
Mon 9/76:05 am
STL
- ATL
1 stop4h 55m
Southwest
Deal found 6/11![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:07 pm
CHA
- ORD
Nonstop2h 05m
United Airlines
Tue 7/76:55 am
ORD
- CHA
Nonstop1h 49m
United Airlines
Deal found 6/10![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/72:45 pm
ATL
- STL
1 stop3h 40m
Southwest
Sun 7/129:15 am
STL
- ATL
1 stop6h 35m
Southwest
Deal found 6/14![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
CHA
- ORD
Nonstop1h 59m
United Airlines
Sat 7/256:55 am
ORD
- CHA
Nonstop1h 49m
United Airlines
Deal found 6/13![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/94:01 pm
BHM
- ORD
1 stop4h 16m
Delta
Wed 9/2311:17 am
ORD
- BHM
1 stop5h 35m
Delta
Deal found 6/11![Delta logo]()
$265
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/263:20 pm
MGM
- ORD
1 stop6h 12m
American Airlines
Sun 6/285:00 am
ORD
- MGM
1 stop6h 59m
American Airlines
Deal found 6/10![American Airlines logo]()
$440
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:15 pm
ATL
- STL
1 stop6h 15m
Southwest
Sun 7/267:55 pm
STL
- ATL
Nonstop1h 40m
Southwest
Deal found 6/10![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:27 am
CHA
- ORD
Nonstop2h 02m
United Airlines
Sat 7/115:50 pm
ORD
- CHA
Nonstop1h 59m
United Airlines
Deal found 6/10![United Airlines logo]()
$319
Last-minute flights from Alabama to IllinoisDiscover last-minute flight deals from Alabama to Illinois. Data last updated June 15, 2026 and is based on user searches.
Discover last-minute flight deals from Alabama to Illinois. Data last updated June 15, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Sat 6/275:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 6/10![Frontier logo]()
$106
This deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Tue 6/306:31 pm
STL
- ATL
Nonstop2h 14m
Frontier
Deal found 6/12![Frontier logo]()
$108
This Frontier deal was found by Cheapflights users on 6/10. 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 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sat 7/45:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 6/10![Frontier logo]()
$92
This Booking.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/12![Frontier logo]()
$93
This Cheapflightsfares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 6/304:43 pm
ATL
- STL
Nonstop1h 47m
Frontier
Sun 7/56:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/11![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Sat 7/45:06 pm
STL
- ATL
Nonstop2h 01m
Frontier
Deal found 6/11![Frontier logo]()
$91
This Cheapflightsfares deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/38:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/13![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/48:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Mon 7/64:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/13![Frontier logo]()
$77
This Frontier deal was found by Cheapflights users on 6/10. 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.
Mon 7/68:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Tue 7/76:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/10![Frontier logo]()
$76
This Super.com deal was found by Cheapflights users on 6/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/124:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Thu 7/166:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/10![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” 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.
Sun 7/124:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Wed 7/154:57 pm
STL
- ATL
Nonstop1h 59m
Frontier
Deal found 6/12![Frontier logo]()
$97
This Super.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/234:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Sun 7/266:34 pm
STL
- ATL
Nonstop2h 03m
Frontier
Deal found 6/12![Frontier logo]()
$87
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 June 15, 2026.
Search for one-way flight options from Alabama to Illinois. Find affordable one-way fares based on user searches. Data last updated June 15, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 7/214:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 6/11![Frontier logo]()
$38
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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.
Fri 7/318:05 am
ATL
- STL
Nonstop1h 52m
Frontier
Deal found 6/11![Frontier logo]()
$39
This Trip.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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.
Tue 7/144:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 6/14![Frontier logo]()
$40
This Kiwi.com deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:50 am
ATL
- STL
Nonstop1h 50m
Frontier
Deal found 6/12![Frontier logo]()
$47
This iWofly deal was found by Cheapflights users on 6/10. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:59 pm
ATL
- MDW
Nonstop2h 04m
Frontier
Deal found 6/10![Frontier logo]()
$47
This iWofly deal was found by Cheapflights users on 6/10. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:35 am
ATL
- ORD
Nonstop2h 18m
Frontier
Deal found 6/10![Frontier logo]()
$47
This Cheapflightsfares deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/194:43 pm
ATL
- STL
Nonstop1h 54m
Frontier
Deal found 6/11![Frontier logo]()
$49
This Frontier deal was found by Cheapflights users on 6/10. 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.
Wed 9/99:00 pm
ATL
- MDW
Nonstop1h 58m
Frontier
Deal found 6/10![Frontier logo]()
$49
This Frontier deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” 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 9/156:22 pm
ATL
- ORD
Nonstop2h 22m
Frontier
Deal found 6/11![Frontier logo]()
$49
This Super.com deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” 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 6/278:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Deal found 6/13![Frontier logo]()
$53
This Super.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:05 am
ATL
- STL
Nonstop1h 47m
Frontier
Deal found 6/11![Frontier logo]()
$54
This Frontier deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” 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 10/127:00 am
ATL
- ORD
Nonstop2h 15m
Frontier
Deal found 6/14![Frontier logo]()
$54
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 June 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $72 (Frontier) |
One-way from | $38 (Cheapflightsfares) |
Popular in | January |
Cheapest in | September |
Average price | $444 |
Good round-trip deal | $386 or less |
Good one-way deal | $211 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 June 15, 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 7/21
11:40 am-12:17 pm
Nonstop1h 37m
Lambert-St Louis
Tue 7/21
6:58 pm-9:44 pm
Nonstop1h 46m
$117
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Sat 7/11
10:39 pm-11:20 pm
Nonstop1h 41m
Lambert-St Louis
Mon 7/13
9:24 am-12:02 pm
Nonstop1h 38m
$127
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Tue 7/28
7:40 pm-8:30 pm
Nonstop1h 50m
Lambert-St Louis
Wed 7/29
3:35 pm-9:55 pm
1 stop5h 20m
$137
Quickest round-trip
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 7/10
7:43 am-8:19 am
Nonstop1h 36m
Lambert-St Louis
Sat 7/11
6:00 am-8:38 am
Nonstop1h 38m
$147
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Thu 7/2
9:33 pm-10:18 pm
Nonstop1h 45m
Lambert-St Louis
Mon 7/6
1:39 pm-4:18 pm
Nonstop1h 39m
$177
AtlantaChicago
ATL - ORD
ATLORD
Atlanta Hartsfield-Jackson
Thu 8/6
7:30 am-8:44 am
Nonstop2h 14m
Chicago O'Hare Intl
Mon 8/10
5:30 am-8:29 am
Nonstop1h 59m
$189
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Mon 8/17
6:35 pm-7:30 pm
Nonstop1h 55m
Chicago Midway
Tue 8/18
12:45 pm-7:35 pm
2 stops5h 50m
$199
AtlantaSt. Louis
ATL - STL
ATLSTL
Atlanta Hartsfield-Jackson
Fri 7/10
8:20 pm-9:00 pm
Nonstop1h 40m
Lambert-St Louis
Fri 7/17
4:25 pm-7:00 pm
Nonstop1h 35m
$217
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Thu 8/6
8:00 am-8:50 am
Nonstop1h 50m
Chicago Midway
Mon 8/10
7:55 am-12:45 pm
1 stop3h 50m
$221
AtlantaChicago
ATL - MDW
ATLMDW
Atlanta Hartsfield-Jackson
Thu 9/3
3:25 pm-5:50 pm
1 stop3h 25m
Chicago Midway
Tue 9/8
5:55 pm-8:50 pm
Nonstop1h 55m
$228
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
CHA-ORD
HSV-ORD
ATL-MDW
ATL-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
CHA-ORD
HSV-ORD
ATL-MDW
What is the cheapest month to book a flight from Alabama to Illinois?
Currently, October is the cheapest month in which you can book a flight from Alabama to Illinois (average of $78). Flying from Alabama to Illinois in February is currently the most expensive (average of $209). 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 June 15, 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 afternoon could potentially save you up to 25% 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 June 15, 2026.
The most flights from USAL to USIL are scheduled on a Monday (14 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from Alabama to Illinois?
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 June 15, 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.
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Food
7.0
Boarding
8.1
Crew
8.6
Comfort
8.0
Entertainment
7.5
Overall
7.9
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 June 15, 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 June 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$125 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$199 | Average$370 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$209 | Average$341 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$234 | Average$449 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$260 | Average$439 | FlexibilityNo cancel fee | On-time63% |