$110+ Cheap flights from Phoenix 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Dec 9 — Dec 161
Round-trip
1 adult, Economy
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Find cheap flights from Phoenix 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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Cheapest flights from Phoenix to IllinoisExplore the most affordable flight options available from Phoenix to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
Explore the most affordable flight options available from Phoenix to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 9, 2026.
This CheapOair deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:14 pm -
Nonstop3h 10m
Mon 11/237:58 pm -
Nonstop3h 44m
Deal found 11/7![Allegiant Air logo]()
$162
This iWofly deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:40 am -
Nonstop3h 02m
Wed 12/168:14 pm -
Nonstop3h 29m
Deal found 11/8![Allegiant Air logo]()
$192
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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.
Sat 12/53:57 pm -
1 stop7h 57m
Wed 12/98:30 am -
2 stops13h 57m
Deal found 11/4![Frontier logo]()
$229
This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
Nonstop3h 11m
Mon 12/71:01 pm -
Nonstop3h 44m
Deal found 11/6![Allegiant Air logo]()
$229
This Expedia deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:24 am -
1 stop16h 02m
Wed 1/136:10 am -
1 stop12h 42m
Deal found 11/6![Frontier logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:57 pm -
1 stop7h 57m
Mon 12/1411:29 am -
Nonstop4h 03m
Deal found 11/9![Frontier logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/238:20 am -
Nonstop3h 06m
Wed 12/94:01 pm -
Nonstop3h 44m
Deal found 11/4![Allegiant Air logo]()
$231
This Cheapflightsfares deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:50 pm -
1 stop26h 04m
Sat 1/96:10 am -
1 stop16h 11m
Deal found 11/5![Frontier logo]()
$232
This Expedia deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:52 pm -
1 stop15h 07m
Tue 12/87:25 am -
1 stop10h 24m
Deal found 11/9![Frontier logo]()
$233
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/113:57 pm -
1 stop7h 57m
Sun 12/137:00 am -
1 stop10h 49m
Deal found 11/4![Frontier logo]()
$234
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:00 am -
2 stops14h 54m
Mon 12/148:59 am -
1 stop12h 35m
Deal found 11/5![Frontier logo]()
$235
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:08 pm -
1 stop12h 37m
Wed 12/910:40 am -
1 stop10h 51m
Deal found 11/5![Frontier logo]()
$235
Best flights from Phoenix to IllinoisDiscover carefully curated flight deals from Phoenix to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
Discover carefully curated flight deals from Phoenix to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 9, 2026.
This CheapOair deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:14 pm -
Nonstop3h 10m
Mon 11/237:58 pm -
Nonstop3h 44m
Deal found 11/7![Allegiant Air logo]()
$162
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:15 pm -
Nonstop3h 39m
Thu 12/108:30 pm -
Nonstop4h 04m
Deal found 11/5![United Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/171:35 am -
Nonstop3h 10m
Tue 12/2210:55 pm -
Nonstop4h 00m
Deal found 11/4![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 11/251:49 pm -
1 stop9h 06m
Thu 11/263:47 pm -
1 stop6h 18m
Deal found 11/4![Delta logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/262:38 pm -
Nonstop2h 59m
Thu 12/319:13 pm -
2 stops35h 37m
Deal found 11/8![Multiple Airlines logo]()
$353
This Alaska Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:00 am -
1 stop6h 19m
Thu 12/242:08 pm -
2 stops10h 29m
Deal found 11/5![Alaska Airlines logo]()
$381
This iWofly deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:40 am -
Nonstop3h 02m
Wed 12/168:14 pm -
Nonstop3h 29m
Deal found 11/8![Allegiant Air logo]()
$192
This American Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/74:58 pm -
1 stop5h 23m
Sat 12/122:18 pm -
1 stop8h 43m
Deal found 11/9![American Airlines logo]()
$399
This CheapOair deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/911:00 am -
Nonstop3h 11m
Fri 12/111:01 pm -
Nonstop3h 44m
Deal found 11/9![Allegiant Air logo]()
$231
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/118:00 am -
Nonstop3h 11m
Mon 12/141:01 pm -
Nonstop3h 44m
Deal found 11/4![Allegiant Air logo]()
$239
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1811:31 pm -
1 stop8h 18m
Mon 1/111:59 pm -
1 stop9h 18m
Deal found 11/5![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:20 pm -
Nonstop3h 38m
Tue 12/810:43 am -
Nonstop4h 05m
Deal found 11/8![United Airlines logo]()
$305
This Southwest deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/91:35 am -
Nonstop3h 10m
Sun 12/135:15 am -
Nonstop3h 55m
Deal found 11/4![Southwest logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:00 am -
Nonstop3h 11m
Fri 12/111:01 pm -
Nonstop3h 44m
Deal found 11/7![Allegiant Air logo]()
$244
This Delta deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/111:59 pm -
1 stop8h 38m
Sat 12/54:08 pm -
1 stop8h 30m
Deal found 11/5![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/58:00 am -
Nonstop3h 39m
Sun 12/64:10 pm -
Nonstop4h 05m
Deal found 11/5![United Airlines logo]()
$313
This Southwest deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/33:40 pm -
Nonstop3h 25m
Sun 2/77:00 am -
1 stop6h 35m
Deal found 11/5![Southwest logo]()
$319
This Booking.com deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/182:57 pm -
Nonstop3h 08m
Mon 1/111:13 pm -
Nonstop3h 45m
Deal found 11/6![Allegiant Air logo]()
$250
This United Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:00 am -
Nonstop3h 39m
Thu 12/172:22 pm -
Nonstop4h 00m
Deal found 11/7![United Airlines logo]()
$320
This Southwest deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/166:25 am -
2 stops7h 05m
Sat 1/166:10 pm -
Nonstop4h 00m
Deal found 11/8![Southwest logo]()
$320
This American Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/181:03 am -
2 stops9h 14m
Fri 1/16:06 am -
1 stop6h 54m
Deal found 11/8![American Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:40 am -
Nonstop3h 02m
Sun 12/139:39 pm -
2 stops24h 09m
Deal found 11/8![Multiple Airlines logo]()
$406
This Alaska Airlines deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/1711:04 am -
2 stops11h 55m
Mon 12/212:17 pm -
1 stop10h 20m
Deal found 11/4![Alaska Airlines logo]()
$411
This Gotogate deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/213:48 pm -
Nonstop3h 07m
Wed 12/307:45 pm -
Nonstop3h 39m
Deal found 11/4![Allegiant Air logo]()
$261
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1012:55 am -
1 stop6h 45m
Mon 1/111:45 pm -
1 stop9h 32m
Deal found 11/8![Delta logo]()
$355
This Southwest deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/211:25 am -
Nonstop3h 20m
Tue 1/267:25 am -
Nonstop3h 55m
Deal found 11/8![Southwest logo]()
$330
This Gotogate deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:00 am -
Nonstop3h 11m
Mon 12/141:01 pm -
Nonstop3h 44m
Deal found 11/5![Allegiant Air logo]()
$262
This United Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/276:28 pm -
Nonstop3h 31m
Wed 1/610:47 am -
1 stop5h 39m
Deal found 11/5![United Airlines logo]()
$350
This American Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:51 pm -
1 stop6h 16m
Wed 12/24:04 pm -
1 stop8h 08m
Deal found 11/5![American Airlines logo]()
$434
This Alaska Airlines deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1711:04 am -
2 stops11h 55m
Sun 12/207:58 pm -
1 stop14h 52m
Deal found 11/5![Alaska Airlines logo]()
$441
Last-minute flights from Phoenix to IllinoisDiscover last-minute flight deals from Phoenix to Illinois. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Illinois. Data last updated November 9, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:14 pm -
Nonstop3h 10m
Mon 11/237:58 pm -
Nonstop3h 44m
Deal found 11/7![Allegiant Air logo]()
$162
This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
Nonstop3h 11m
Mon 12/71:01 pm -
Nonstop3h 44m
Deal found 11/6![Allegiant Air logo]()
$229
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:08 pm -
1 stop12h 37m
Wed 12/910:40 am -
1 stop10h 51m
Deal found 11/5![Frontier logo]()
$235
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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.
Sat 12/53:57 pm -
1 stop7h 57m
Wed 12/98:30 am -
2 stops13h 57m
Deal found 11/4![Frontier logo]()
$229
This Cheapflightsfares deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:57 pm -
1 stop7h 57m
Mon 12/1411:29 am -
Nonstop4h 03m
Deal found 11/8![Frontier logo]()
$231
This CheapOair deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/911:00 am -
Nonstop3h 11m
Fri 12/111:01 pm -
Nonstop3h 44m
Deal found 11/9![Allegiant Air logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/1011:40 am -
1 stop7h 08m
Tue 12/1510:00 am -
2 stops28h 31m
Deal found 11/4![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/113:57 pm -
1 stop7h 57m
Sun 12/137:00 am -
1 stop10h 49m
Deal found 11/4![Frontier logo]()
$234
This iWofly deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/128:40 am -
Nonstop3h 02m
Wed 12/168:14 pm -
Nonstop3h 29m
Deal found 11/8![Allegiant Air logo]()
$192
This Mytrip deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:00 am -
2 stops14h 54m
Mon 12/148:59 am -
1 stop12h 35m
Deal found 11/5![Frontier logo]()
$235
This Booking.com deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/182:18 pm -
Nonstop3h 37m
Tue 1/51:00 pm -
1 stop8h 14m
Deal found 11/6![Frontier logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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 12/1810:09 pm -
1 stop25h 48m
Fri 12/255:40 am -
1 stop17h 59m
Deal found 11/4![Frontier logo]()
$233
One-way flights from Phoenix to IllinoisSearch for one-way flight options from Phoenix to Illinois. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
Search for one-way flight options from Phoenix to Illinois. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This Mytrip deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/93:57 pm -
1 stop7h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$110
This CheapTickets deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2310:09 pm -
1 stop25h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$111
This Trip.com deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/23:10 pm -
1 stop12h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/13:45 pm -
1 stop7h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$114
This iWofly deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/208:20 am -
Nonstop3h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Allegiant Air logo]()
$114
This Super.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:24 pm -
1 stop9h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/208:55 pm -
1 stop7h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$117
This CheapOair deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:40 am -
Nonstop3h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Allegiant Air logo]()
$119
This CheapOair deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:00 am -
Nonstop3h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Allegiant Air logo]()
$120
This Mytrip deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” 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.
Mon 12/2110:54 am -
2 stops19h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/228:56 pm -
1 stop7h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Frontier logo]()
$122
This Kiwi.com deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/410:54 am -
2 stops44h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/7![Frontier logo]()
$122
Find flight deals from Phoenix to Illinois
Keep the following information in mind while searching for Phoenix to Illinois flight deals. Data was last updated November 9, 2026.
Round-trip from | $162 (CheapOair) |
|---|---|
One-way from | $110 (Mytrip) |
Popular in | June |
Cheapest in | February |
Average price | $349 |
Cheapflights Fare Finder
Customize your flight search to find flights from Phoenix 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 November 9, 2026.
Use the filters below to find and compare flights from Phoenix to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Wed 2/10
8:10 am-12:15 pm
Nonstop3h 05m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$110
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Sat 2/27
2:56 pm-7:01 pm
Nonstop3h 05m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$117
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Sat 11/21
7:40 am-11:46 am
Nonstop3h 06m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$129
Quickest round-trip
PhoenixPeoria
AZA Phoenix-Mesa Gateway - PIA Greater Peoria
AZAPIA
Phoenix-Mesa Gateway
Thu 12/17
7:20 am-11:19 am
Nonstop2h 59m
Greater Peoria
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Mon 1/4
3:02 pm-7:09 pm
Nonstop3h 07m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Wed 12/23
2:48 pm-6:55 pm
Nonstop3h 07m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Thu 12/17
6:28 pm-10:59 pm
Nonstop3h 31m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Mon 1/11
11:40 am-11:47 pm
1 stop11h 07m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Thu 2/18
1:25 am-5:45 am
Nonstop3h 20m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$142
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Thu 12/24
6:05 pm-10:25 pm
Nonstop3h 20m
Chicago Midway
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 Phoenix to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Phoenix with our price prediction graph.
PHX-ORD
AZA-RFD
PHX-MDW
AZA-BMI
AZA-PIA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix to Illinois
PH1-USIL
PHX-ORD
AZA-RFD
PHX-MDW
AZA-BMI
What is the cheapest month to book a flight from Phoenix to Illinois?
Currently, January is the cheapest month in which you can book a flight from Phoenix to Illinois (average of $216). Flying from Phoenix to Illinois in June is currently the most expensive (average of $364). 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 PHX to IL?
Find hourly flight availability from Phoenix 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 November 9, 2026.
A simple way to save on the total cost of your ticket is to fly from Phoenix to Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the evening.
Weekly flight availability from Phoenix to Illinois
Explore weekly flight availability from Phoenix 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 November 9, 2026.
The most flights from PH1 to USIL are scheduled on a Friday (61 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (30 on average).
How much does it cost to fly round-trip from Phoenix to Illinois?
Airfare is below average for this route at the moment.
Phoenix to Illinois flights typically cost between $282 and $439 in December.The cheapest round-trip price found within the last 5 days was $229 on Frontier (Dec 5-Dec 9).
How far ahead should I book a flight from Phoenix to Illinois?
The price you pay for your flight from Phoenix to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 56 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 Phoenix to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Phoenix to Illinois. Price data was last updated on November 7, 2026.
Travelers seeking maximum savings on their Phoenix to Illinois flight should consider departing on Friday mornings 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 November 9, 2026.
See what other customers who have flown with Southwest,United Airlines, andAllegiant Air from Phoenix to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
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 Phoenix to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Phoenix 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 Phoenix to Illinois by cabin class
Find flights from Phoenix to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Phoenix and Illinois flights
Browse other Phoenix and Illinois flight options. Last updated on November 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Phoenix to Illinois flights
Consider these flights traveling from Phoenix to Illinois.
Top 6 airlines flying from Phoenix to Illinois
Discover the top 6 airlines that operate flights from Phoenix 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 November 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$215 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$215 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$187 | Average$362 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$187 | Average$292 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$193 | Average$402 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$216 | Average$447 | FlexibilityNo cancel fee | On-time71% |