$94+ Cheap flights from Phoenix 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Sep 5 — Sep 121
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 August 6, 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 August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/1111:29 am -
1 stop5h 48m
Sun 9/131:02 pm -
1 stop12h 41m
Deal found 8/3![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/298:56 pm -
1 stop20h 21m
Tue 10/138:10 pm -
1 stop22h 52m
Deal found 8/2![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/256:25 am -
1 stop10h 52m
Mon 9/288:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/136:36 pm -
1 stop22h 39m
Mon 10/1910:35 am -
2 stops30h 47m
Deal found 8/2![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/126:36 pm -
1 stop22h 39m
Thu 10/158:10 pm -
1 stop13h 01m
Deal found 8/2![Frontier logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:29 am -
1 stop5h 48m
Mon 9/218:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:15 am -
1 stop8h 02m
Wed 10/78:10 pm -
1 stop13h 01m
Deal found 8/3![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:00 am -
2 stops33h 22m
Sun 9/67:58 pm -
1 stop5h 41m
Deal found 8/2![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
1 stop8h 02m
Mon 10/52:29 pm -
2 stops33h 21m
Deal found 8/2![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 12/99:00 pm -
1 stop21h 22m
Mon 12/149:42 pm -
Nonstop4h 05m
Deal found 8/1![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/173:25 pm -
Nonstop3h 09m
Fri 8/211:13 pm -
Nonstop3h 20m
Deal found 8/3![Allegiant Air logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 9/107:24 pm -
2 stops24h 15m
Sat 9/266:00 am -
1 stop9h 06m
Deal found 8/4![Frontier logo]()
$245
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 August 6, 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 August 6, 2026.
This CheapOair deal was found by Cheapflights users on 8/5. 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.
Wed 9/28:10 am -
Nonstop3h 09m
Wed 9/92:09 pm -
Nonstop3h 25m
Deal found 8/5![Allegiant Air logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/18:00 am -
1 stop10h 13m
Sun 10/49:36 pm -
1 stop20h 42m
Deal found 8/2![Multiple Airlines logo]()
$245
This Alaska Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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.
Wed 9/167:08 am -
1 stop10h 13m
Wed 9/232:18 pm -
1 stop6h 49m
Deal found 8/3![Alaska Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/54:55 pm -
Nonstop3h 25m
Fri 9/118:00 am -
1 stop5h 50m
Deal found 8/1![Southwest logo]()
$259
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:45 am -
1 stop7h 03m
Fri 9/1110:44 am -
1 stop8h 56m
Deal found 8/2![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 10/304:41 pm -
1 stop5h 18m
Mon 11/29:15 am -
Nonstop4h 09m
Deal found 8/5![United Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 9/208:21 am -
2 stops24h 56m
Thu 9/2410:20 am -
1 stop13h 30m
Deal found 8/5![Frontier logo]()
$290
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/223:34 pm -
1 stop6h 29m
Tue 9/296:30 am -
1 stop8h 30m
Deal found 8/5![American Airlines logo]()
$339
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/143:25 pm -
Nonstop3h 09m
Mon 8/179:24 pm -
Nonstop3h 35m
Deal found 8/3![Allegiant Air logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/248:00 am -
1 stop10h 39m
Sun 9/279:29 pm -
1 stop27h 18m
Deal found 8/3![Multiple Airlines logo]()
$248
This United Airlines deal was found by Cheapflights users on 8/5. 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.
Fri 9/117:10 am -
Nonstop3h 39m
Sat 9/194:11 pm -
1 stop6h 42m
Deal found 8/5![United Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am -
1 stop10h 39m
Sun 9/139:29 pm -
1 stop27h 18m
Deal found 8/6![Multiple Airlines logo]()
$252
This CheapOair deal was found by Cheapflights users on 8/5. 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 8/247:10 am -
Nonstop3h 13m
Mon 8/311:43 pm -
Nonstop3h 20m
Deal found 8/5![Allegiant Air logo]()
$255
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
Wed 9/27:00 am -
1 stop10h 21m
Sun 9/66:01 am -
1 stop7h 30m
Deal found 8/2![Alaska Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:35 am -
1 stop4h 35m
Mon 8/318:00 am -
1 stop5h 50m
Deal found 8/1![Southwest logo]()
$290
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:18 pm -
1 stop7h 18m
Wed 9/29:59 am -
1 stop8h 02m
Deal found 8/2![Delta logo]()
$299
This Booking.com deal was found by Cheapflights users on 8/6. 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.
Mon 10/58:00 am -
Nonstop3h 07m
Fri 10/912:17 pm -
Nonstop3h 31m
Deal found 8/6![Allegiant Air logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:39 pm -
1 stop22h 00m
Sun 9/139:29 pm -
2 stops14h 54m
Deal found 8/1![Multiple Airlines logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:10 am -
1 stop5h 45m
Wed 11/412:55 pm -
Nonstop4h 02m
Deal found 7/31![United Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/293:25 pm -
Nonstop2h 55m
Mon 8/312:20 pm -
1 stop4h 30m
Deal found 8/2![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:36 am -
1 stop6h 43m
Sat 9/261:19 pm -
1 stop7h 56m
Deal found 8/2![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 8/5. 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.
Tue 9/2912:15 pm -
2 stops9h 48m
Tue 10/62:30 pm -
1 stop8h 27m
Deal found 8/5![American Airlines logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 8/4. 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.
Wed 9/308:10 am -
Nonstop3h 07m
Mon 10/51:57 pm -
Nonstop3h 31m
Deal found 8/4![Allegiant Air logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 11/58:39 am -
2 stops10h 23m
Sun 11/88:37 pm -
1 stop16h 12m
Deal found 8/3![Multiple Airlines logo]()
$266
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:35 am -
1 stop4h 35m
Wed 9/236:40 am -
1 stop5h 15m
Deal found 8/2![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/1011:05 pm -
1 stop8h 02m
Tue 9/151:19 pm -
1 stop7h 56m
Deal found 8/3![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/192:21 pm -
Nonstop3h 39m
Sun 9/209:12 am -
Nonstop3h 56m
Deal found 8/1![United Airlines logo]()
$303
This American Airlines deal was found by Cheapflights users on 8/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:15 pm -
2 stops9h 48m
Wed 9/164:24 pm -
1 stop7h 36m
Deal found 8/4![American Airlines logo]()
$344
This Booking.com deal was found by Cheapflights users on 8/6. 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.
Mon 9/282:45 pm -
Nonstop3h 09m
Fri 10/212:17 pm -
Nonstop3h 31m
Deal found 8/6![Allegiant Air logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:03 am -
1 stop9h 42m
Sun 8/309:35 pm -
1 stop17h 13m
Deal found 8/2![Multiple Airlines logo]()
$267
Last-minute flights from Phoenix to IllinoisDiscover last-minute flight deals from Phoenix to Illinois. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Illinois. Data last updated August 6, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/173:25 pm -
Nonstop3h 09m
Fri 8/211:13 pm -
Nonstop3h 20m
Deal found 8/3![Allegiant Air logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/248:35 am -
1 stop8h 38m
Mon 8/317:58 pm -
1 stop5h 41m
Deal found 8/3![Frontier logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:00 am -
2 stops33h 22m
Sun 9/67:58 pm -
1 stop5h 41m
Deal found 8/2![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/16:57 pm -
2 stops10h 56m
Mon 9/78:11 pm -
1 stop25h 10m
Deal found 8/1![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:15 am -
1 stop8h 02m
Wed 9/168:10 pm -
1 stop13h 50m
Deal found 8/2![Frontier logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/1111:29 am -
1 stop5h 48m
Sun 9/131:02 pm -
1 stop12h 41m
Deal found 8/3![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:29 am -
1 stop5h 48m
Mon 9/218:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:15 am -
1 stop8h 02m
Wed 10/78:10 pm -
1 stop13h 01m
Deal found 8/3![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/248:56 pm -
1 stop20h 21m
Mon 9/288:10 pm -
1 stop13h 50m
Deal found 8/2![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/256:25 am -
1 stop10h 52m
Mon 9/288:10 pm -
1 stop13h 50m
Deal found 8/1![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/298:56 pm -
1 stop20h 21m
Tue 10/138:10 pm -
1 stop22h 52m
Deal found 8/2![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am -
1 stop8h 02m
Mon 10/52:29 pm -
2 stops33h 21m
Deal found 8/2![Frontier logo]()
$216
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 August 6, 2026.
Search for one-way flight options from Phoenix to Illinois. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/26:25 am -
1 stop10h 52m
Deal found 8/2![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 10/238:16 am -
1 stop8h 59m
Deal found 8/3![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/298:56 pm -
1 stop20h 21m
Deal found 8/1![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 11/110:06 am -
1 stop8h 09m
Deal found 8/2![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/314:40 pm -
1 stop21h 51m
Deal found 8/1![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:29 am -
1 stop5h 48m
Deal found 8/5![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/108:56 pm -
1 stop20h 21m
Deal found 8/3![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/56:57 pm -
1 stop22h 16m
Deal found 8/1![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:25 am -
1 stop10h 52m
Deal found 8/1![Frontier logo]()
$110
This CheapOair deal was found by Cheapflights users on 8/5. 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 8/173:25 pm -
Nonstop3h 09m
Deal found 8/5![Allegiant Air logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/61:53 pm -
1 stop14h 06m
Deal found 8/2![Frontier logo]()
$125
This United Airlines deal was found by Cheapflights users on 8/5. 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 9/511:28 am -
Nonstop3h 37m
Deal found 8/5![United Airlines logo]()
$127
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 August 6, 2026.
Round-trip from | $189 (Kiwi.com) |
|---|---|
One-way from | $94 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $282 |
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 2,558,603 searches. Data last updated August 6, 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 9/2
8:10 am-1:19 pm
Nonstop3h 09m
Chicago Greater Rockford
Wed 9/9
2:09 pm-3:34 pm
Nonstop3h 25m
$244
PhoenixChicago
PHX Phoenix Sky Harbor Intl - RFD Chicago Greater Rockford
PHXRFD
Phoenix Sky Harbor Intl
Thu 10/1
8:00 am-8:13 pm
1 stop10h 13m
Chicago Greater Rockford
Sun 10/4
9:36 pm-4:18 pm
1 stop20h 42m
$245
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Fri 8/14
3:25 pm-8:34 pm
Nonstop3h 09m
Chicago Greater Rockford
Mon 8/17
9:24 pm-10:59 pm
Nonstop3h 35m
$246
PhoenixChicago
PHX Phoenix Sky Harbor Intl - RFD Chicago Greater Rockford
PHXRFD
Phoenix Sky Harbor Intl
Thu 9/24
8:00 am-8:39 pm
1 stop10h 39m
Chicago Greater Rockford
Sun 9/27
9:29 pm-10:47 pm
1 stop27h 18m
$248
PhoenixChicago
PHX Phoenix Sky Harbor Intl - RFD Chicago Greater Rockford
PHXRFD
Phoenix Sky Harbor Intl
Thu 9/10
8:00 am-8:39 pm
1 stop10h 39m
Chicago Greater Rockford
Sun 9/13
9:29 pm-10:47 pm
1 stop27h 18m
$252
Quickest round-trip
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Mon 8/24
7:10 am-12:23 pm
Nonstop3h 13m
Chicago Greater Rockford
Mon 8/31
1:43 pm-3:03 pm
Nonstop3h 20m
$255
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Wed 9/16
7:08 am-7:21 pm
1 stop10h 13m
Chicago O'Hare Intl
Wed 9/23
2:18 pm-7:07 pm
1 stop6h 49m
$259
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Sat 9/5
4:55 pm-10:20 pm
Nonstop3h 25m
Chicago Midway
Fri 9/11
8:00 am-11:50 am
1 stop5h 50m
$259
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Mon 10/5
8:00 am-1:07 pm
Nonstop3h 07m
Chicago Greater Rockford
Fri 10/9
12:17 pm-1:48 pm
Nonstop3h 31m
$261
PhoenixChicago
PHX Phoenix Sky Harbor Intl - RFD Chicago Greater Rockford
PHXRFD
Phoenix Sky Harbor Intl
Wed 9/9
8:39 pm-8:39 pm
1 stop22h 00m
Chicago Greater Rockford
Sun 9/13
9:29 pm-10:23 am
2 stops14h 54m
$262
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.
AZA-RFD
PHX-STL
PHX-ORD
PHX-RFD
PHX-MDW
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
AZA-RFD
PHX-STL
PHX-ORD
PHX-RFD
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 $214). Flying from Phoenix to Illinois in June is currently the most expensive (average of $365). 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 August 6, 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 August 6, 2026.
The most flights from PH1 to USIL are scheduled on a Wednesday (53 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (34 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 $245 and $377 in December.The cheapest round-trip price found within the last 5 days was $244 on Frontier (Dec 9-Dec 14).
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 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 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 August 1, 2026.
Travelers seeking maximum savings on their Phoenix to Illinois flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday 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 August 6, 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.
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Crew
8.6
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
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 August 6, 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 7 airlines flying from Phoenix to Illinois
Discover the top 7 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 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$187 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$286 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$208 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$173 | Average$247 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$343 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$193 | Average$396 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$449 | FlexibilityNo cancel fee | On-time71% |