$78+ Cheap flights from Arizona to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from Arizona to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Arizona to Illinois
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Cheapest flights from Arizona to IllinoisExplore the most affordable flight options available from Arizona to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
Explore the most affordable flight options available from Arizona to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
This deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:45 am -
1 stop6h 39m
Mon 10/265:53 pm -
1 stop7h 36m
Deal found 9/17![Frontier logo]()
$102
This deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:15 am -
Nonstop3h 17m
Tue 9/2912:17 pm -
Nonstop3h 35m
Deal found 9/17![Frontier logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:38 am -
1 stop5h 19m
Sat 10/177:42 pm -
1 stop6h 01m
Deal found 9/19![Frontier logo]()
$175
This Super.com deal was found by Cheapflights users on 9/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/153:09 pm -
1 stop7h 15m
Mon 10/193:30 pm -
Nonstop4h 16m
Deal found 9/15![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:15 am -
Nonstop3h 18m
Mon 11/91:28 pm -
Nonstop3h 44m
Deal found 9/16![Frontier logo]()
$177
This Gotogate deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:29 pm -
Nonstop3h 47m
Mon 11/26:30 am -
1 stop28h 02m
Deal found 9/16![Frontier logo]()
$179
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:48 pm -
1 stop25h 36m
Wed 10/286:30 am -
1 stop19h 13m
Deal found 9/18![Frontier logo]()
$181
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop10h 12m
Fri 10/307:59 pm -
1 stop14h 31m
Deal found 9/19![Frontier logo]()
$182
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1411:15 pm -
Nonstop3h 46m
Thu 12/176:11 am -
Nonstop4h 15m
Deal found 9/17![Frontier logo]()
$183
This Mytrip deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:38 am -
1 stop6h 57m
Wed 11/116:30 am -
1 stop28h 02m
Deal found 9/17![Frontier logo]()
$184
This Cheapflightsfares deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:00 am -
1 stop19h 34m
Wed 10/146:30 am -
1 stop19h 13m
Deal found 9/18![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:17 am -
1 stop8h 51m
Sat 10/316:30 am -
1 stop6h 05m
Deal found 9/17![Frontier logo]()
$186
Best flights from Arizona to IllinoisDiscover carefully curated flight deals from Arizona to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Arizona to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This CheapOair deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:10 pm -
Nonstop3h 20m
Sun 11/18:53 pm -
Nonstop3h 43m
Deal found 9/17![Allegiant Air logo]()
$188
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3012:20 am -
Nonstop3h 20m
Wed 12/210:10 am -
1 stop5h 20m
Deal found 9/16![Southwest logo]()
$215
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:00 am -
Nonstop3h 48m
Tue 10/135:00 am -
1 stop5h 36m
Deal found 9/16![United Airlines logo]()
$245
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:16 am -
1 stop26h 19m
Mon 10/195:53 pm -
1 stop7h 06m
Deal found 9/15![Frontier logo]()
$296
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/253:42 pm -
1 stop6h 17m
Sat 10/317:00 am -
1 stop10h 10m
Deal found 9/16![Alaska Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2412:50 am -
1 stop5h 54m
Sat 10/316:04 am -
1 stop6h 43m
Deal found 9/16![Delta logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/222:10 pm -
Nonstop3h 20m
Thu 10/291:12 pm -
1 stop12h 47m
Deal found 9/18![Multiple Airlines logo]()
$340
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:35 am -
Nonstop3h 12m
Sun 11/2212:37 pm -
Nonstop3h 46m
Deal found 9/16![Allegiant Air logo]()
$192
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/412:20 am -
Nonstop3h 20m
Tue 12/810:05 am -
1 stop5h 15m
Deal found 9/16![Southwest logo]()
$215
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:35 pm -
Nonstop3h 27m
Thu 11/1912:37 pm -
Nonstop3h 46m
Deal found 9/19![Allegiant Air logo]()
$196
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:40 am -
1 stop5h 40m
Sat 10/247:10 pm -
Nonstop3h 55m
Deal found 9/17![Southwest logo]()
$219
This American Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:23 am -
Nonstop3h 36m
Sat 9/2612:09 pm -
1 stop6h 52m
Deal found 9/20![American Airlines logo]()
$491
This Sun Country Air deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:52 pm -
1 stop19h 55m
Sun 12/207:50 pm -
1 stop23h 28m
Deal found 9/20![Sun Country Air logo]()
$505
This Booking.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:53 pm -
Nonstop3h 20m
Sun 10/49:36 pm -
Nonstop3h 43m
Deal found 9/19![Allegiant Air logo]()
$213
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:00 am -
Nonstop3h 48m
Mon 10/124:35 pm -
Nonstop4h 08m
Deal found 9/17![United Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:55 am -
2 stops6h 35m
Wed 11/111:20 pm -
1 stop6h 05m
Deal found 9/17![Southwest logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:35 pm -
1 stop24h 22m
Mon 10/125:53 pm -
1 stop7h 36m
Deal found 9/20![Frontier logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:49 pm -
Nonstop3h 40m
Thu 10/299:15 am -
Nonstop4h 09m
Deal found 9/20![United Airlines logo]()
$283
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/44:19 pm -
1 stop11h 18m
Sun 12/67:27 am -
1 stop10h 14m
Deal found 9/18![Alaska Airlines logo]()
$321
This CheapOair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:00 am -
Nonstop3h 11m
Mon 1/111:13 pm -
Nonstop3h 45m
Deal found 9/16![Allegiant Air logo]()
$245
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:59 am -
1 stop6h 51m
Sun 11/159:30 am -
1 stop6h 48m
Deal found 9/18![Delta logo]()
$345
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:35 am -
Nonstop3h 10m
Tue 12/18:50 pm -
Nonstop3h 50m
Deal found 9/17![Southwest logo]()
$266
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:50 am -
Nonstop3h 39m
Mon 11/94:14 pm -
Nonstop4h 02m
Deal found 9/18![United Airlines logo]()
$301
This Alaska Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:23 am -
1 stop6h 58m
Wed 10/77:20 am -
1 stop9h 53m
Deal found 9/19![Alaska Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:53 pm -
1 stop16h 24m
Thu 10/159:03 pm -
Nonstop3h 43m
Deal found 9/16![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/57:30 am -
Nonstop3h 13m
Wed 2/101:05 pm -
Nonstop3h 51m
Deal found 9/18![Allegiant Air logo]()
$264
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/301:35 am -
Nonstop3h 10m
Sat 12/56:25 pm -
Nonstop3h 55m
Deal found 9/16![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:45 am -
1 stop5h 47m
Thu 11/55:00 pm -
1 stop7h 43m
Deal found 9/20![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
Nonstop3h 46m
Tue 11/177:20 am -
Nonstop4h 08m
Deal found 9/16![United Airlines logo]()
$308
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:00 am -
1 stop10h 21m
Tue 9/292:18 pm -
1 stop21h 24m
Deal found 9/18![Alaska Airlines logo]()
$345
Last-minute flights from Arizona to IllinoisDiscover last-minute flight deals from Arizona to Illinois. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Arizona to Illinois. Data last updated September 21, 2026 and is based on user searches.
This deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:15 am -
Nonstop3h 17m
Wed 9/2312:17 pm -
Nonstop3h 35m
Deal found 9/17![Frontier logo]()
$192
This deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:15 am -
Nonstop3h 17m
Tue 9/2912:17 pm -
Nonstop3h 35m
Deal found 9/17![Frontier logo]()
$172
This Booking.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:53 pm -
Nonstop3h 20m
Sun 10/49:36 pm -
Nonstop3h 43m
Deal found 9/19![Allegiant Air logo]()
$213
This Cheapflightsfares deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:15 am -
Nonstop3h 17m
Wed 10/144:19 pm -
1 stop9h 24m
Deal found 9/18![Frontier logo]()
$194
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:53 pm -
Nonstop3h 20m
Sun 10/119:33 pm -
Nonstop3h 43m
Deal found 9/19![Allegiant Air logo]()
$204
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:38 am -
1 stop5h 19m
Sat 10/177:42 pm -
1 stop6h 01m
Deal found 9/19![Frontier logo]()
$175
This Cheapflightsfares deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:40 am -
1 stop11h 55m
Sat 10/243:30 pm -
1 stop9h 59m
Deal found 9/17![Frontier logo]()
$208
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1612:10 am -
Nonstop3h 30m
Sat 10/247:10 pm -
Nonstop3h 55m
Deal found 9/17![Southwest logo]()
$210
This deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:45 am -
1 stop6h 39m
Mon 10/265:53 pm -
1 stop7h 36m
Deal found 9/17![Frontier logo]()
$102
This Mytrip deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:15 am -
Nonstop3h 16m
Mon 10/266:35 pm -
2 stops19h 34m
Deal found 9/17![Frontier logo]()
$193
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop10h 12m
Fri 10/307:59 pm -
1 stop14h 31m
Deal found 9/19![Frontier logo]()
$182
This CheapOair deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/292:10 pm -
Nonstop3h 20m
Sun 11/18:53 pm -
Nonstop3h 43m
Deal found 9/17![Allegiant Air logo]()
$188
One-way flights from Arizona to IllinoisSearch for one-way flight options from Arizona to Illinois. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from Arizona to Illinois. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Super.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:45 am -
1 stop6h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$78
This Cheapflightsfares deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/179:38 am -
1 stop7h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/201:42 pm -
2 stops25h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:15 am -
1 stop6h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
Nonstop3h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$83
This Mytrip deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:40 am -
2 stops15h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:51 pm -
1 stop16h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$87
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:09 am -
1 stop23h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$88
This Cheapflightsfares deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:38 am -
1 stop5h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:15 am -
1 stop7h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/173:46 pm -
1 stop22h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/156:45 am -
1 stop27h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Frontier logo]()
$98
Find flight deals from Arizona to Illinois
Keep the following information in mind while searching for Arizona to Illinois flight deals. Data was last updated September 21, 2026.
Round-trip from | $102 |
|---|---|
One-way from | $78 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $336 |
Good round-trip deal | $211 or less |
Good one-way deal | $184 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Arizona 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 7,457,451 searches. Data last updated September 21, 2026.
Use the filters below to find and compare flights from Arizona to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Mon 11/16
11:35 pm-9:42 am
1 stop9h 07m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$128
Las VegasChicago
LAS Las Vegas Harry Reid Intl - RFD Chicago Greater Rockford
LASRFD
Las Vegas Harry Reid Intl
Thu 10/1
2:53 pm-8:13 pm
Nonstop3h 20m
Chicago Greater Rockford
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$128
Las VegasChicago
LAS Las Vegas Harry Reid Intl - ORD Chicago O'Hare Intl
LASORD
Las Vegas Harry Reid Intl
Mon 12/7
10:16 pm-9:22 am
1 stop9h 06m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$131
Las VegasChicago
LAS Las Vegas Harry Reid Intl - MDW Chicago Midway
LASMDW
Las Vegas Harry Reid Intl
Mon 11/9
11:41 pm-10:24 am
1 stop8h 43m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$131
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Mon 10/5
6:55 pm-12:15 am
Nonstop3h 20m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Mon 10/5
12:35 am-5:45 am
Nonstop3h 10m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Mon 10/19
6:55 pm-12:15 am
Nonstop3h 20m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
Las VegasChicago
LAS Las Vegas Harry Reid Intl - RFD Chicago Greater Rockford
LASRFD
Las Vegas Harry Reid Intl
Thu 11/5
5:54 pm-10:33 am
2 stops14h 39m
Chicago Greater Rockford
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$137
Quickest round-trip
PhoenixSt. Louis
PHX Phoenix Sky Harbor Intl - STL Lambert-St Louis
PHXSTL
Phoenix Sky Harbor Intl
Tue 11/24
9:00 pm-12:55 am
Nonstop2h 55m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$140
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Tue 10/20
11:52 pm-5:20 am
Nonstop3h 28m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Arizona to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Arizona with our price prediction graph.
LAS-STL
LAS-RFD
LAS-MDW
LAS-ORD
PHX-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 Arizona to Illinois
USAZ-USIL
LAS-STL
LAS-RFD
LAS-MDW
LAS-ORD
What is the cheapest month to book a flight from Arizona to Illinois?
Currently, January is the cheapest month in which you can book a flight from Arizona to Illinois (average of $229). Flying from Arizona to Illinois in June is currently the most expensive (average of $373). 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 AZ to IL?
Find hourly flight availability from Arizona 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 September 21, 2026.
It’s typically best to fly out from Arizona to Illinois at noon. Doing so could potentially save you 20% on the flight price compared to flying in the evening, which is usually more expensive.
Weekly flight availability from Arizona to Illinois
Explore weekly flight availability from Arizona 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 September 21, 2026.
The most flights from USAZ to USIL are scheduled on a Sunday (59 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (39 on average).
How much does it cost to fly round-trip from Arizona to Illinois?
Airfare is below average for this route at the moment.
Arizona to Illinois flights typically cost between $270 and $400 in October.The cheapest round-trip price found within the last 5 days was $242 on Frontier (Oct 5-Oct 6).
How far ahead should I book a flight from Arizona to Illinois?
The price you pay for your flight from Arizona to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Arizona to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Arizona to Illinois. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Arizona to Illinois flight should consider departing on Sunday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated September 21, 2026.
See what other customers who have flown with Southwest,United Airlines, andAllegiant Air from Arizona to Illinois have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
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 Arizona 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 Arizona 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 Arizona to Illinois by cabin class
Find flights from Arizona to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Arizona and Illinois flights
Browse other Arizona and Illinois flight options. Last updated on September 21, 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 Arizona after your stay in Illinois
Arizona to Illinois flights
Consider these flights traveling from Arizona to Illinois.
Top 7 airlines flying from Arizona to Illinois
Discover the top 7 airlines that operate flights from Arizona 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 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$293 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$209 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$173 | Average$288 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$385 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$195 | Average$429 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$475 | FlexibilityNo cancel fee | On-time71% |