$74+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Oct 4 — Oct 111
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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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 Phoenix to Illinois
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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 September 4, 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 September 4, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:49 pm -
1 stop12h 27m
Mon 10/128:11 pm -
1 stop26h 31m
Deal found 9/3![Frontier logo]()
$226
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:23 pm -
1 stop12h 11m
Tue 10/137:40 am -
1 stop8h 02m
Deal found 9/3![Frontier logo]()
$227
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:38 pm -
1 stop7h 38m
Mon 10/266:30 am -
1 stop10h 39m
Deal found 9/3![Frontier logo]()
$228
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:01 am -
1 stop7h 34m
Thu 10/2912:20 pm -
1 stop12h 40m
Deal found 9/3![Frontier logo]()
$228
This CheapOair deal was found by Cheapflights users on 9/3. 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.
Wed 9/238:10 am -
Nonstop3h 09m
Mon 9/288:44 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$228
This Frontier deal was found by Cheapflights users on 9/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:25 pm -
1 stop16h 09m
Mon 10/1912:26 pm -
1 stop8h 27m
Deal found 9/1![Frontier logo]()
$229
This CheapOair deal was found by Cheapflights users on 8/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/296:40 am -
Nonstop3h 07m
Sat 1/27:45 pm -
Nonstop3h 39m
Deal found 8/31![Allegiant Air logo]()
$229
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:27 am -
1 stop19h 11m
Mon 10/56:30 am -
1 stop9h 47m
Deal found 9/2![Frontier logo]()
$230
This CheapOair deal was found by Cheapflights users on 9/3. 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 9/251:02 pm -
Nonstop3h 09m
Mon 9/288:44 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 10/87:32 pm -
Nonstop3h 27m
Tue 10/207:40 am -
1 stop8h 02m
Deal found 9/1![Frontier logo]()
$231
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:23 pm -
1 stop12h 11m
Sun 10/186:30 am -
1 stop27h 40m
Deal found 9/2![Frontier logo]()
$232
This Super.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:32 pm -
Nonstop3h 27m
Fri 10/164:20 pm -
Nonstop4h 07m
Deal found 8/31![Frontier logo]()
$233
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 September 4, 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 September 4, 2026.
This CheapOair deal was found by Cheapflights users on 9/3. 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 9/251:02 pm -
Nonstop3h 09m
Mon 9/288:44 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$230
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:55 pm -
Nonstop3h 15m
Mon 10/59:25 pm -
Nonstop3h 50m
Deal found 9/3![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:20 pm -
Nonstop3h 38m
Wed 11/115:48 pm -
1 stop6h 05m
Deal found 9/3![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 9/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/173:00 pm -
1 stop7h 52m
Mon 12/218:05 am -
1 stop9h 33m
Deal found 9/1![Delta logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 10/88:16 am -
1 stop9h 57m
Sun 10/119:33 pm -
1 stop16h 44m
Deal found 9/1![Multiple Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 9/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:18 pm -
1 stop5h 41m
Sun 11/85:00 am -
1 stop5h 45m
Deal found 9/3![American Airlines logo]()
$339
This CheapOair deal was found by Cheapflights users on 9/3. 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.
Wed 9/168:10 am -
Nonstop3h 09m
Fri 9/187:01 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$234
This Alaska Airlines deal was found by Cheapflights users on 9/2. 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.
Sat 10/247:38 am -
2 stops14h 21m
Wed 10/287:02 am -
2 stops13h 40m
Deal found 9/2![Alaska Airlines logo]()
$493
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/91:35 am -
Nonstop3h 10m
Wed 11/113:45 pm -
1 stop5h 15m
Deal found 9/3![Southwest logo]()
$273
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:29 pm -
1 stop5h 30m
Mon 10/58:30 pm -
Nonstop3h 54m
Deal found 9/3![United Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:40 am -
Nonstop3h 06m
Mon 11/308:51 pm -
Nonstop3h 38m
Deal found 8/30![Allegiant Air logo]()
$258
This Delta deal was found by Cheapflights users on 9/3. 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.
Wed 1/612:55 am -
1 stop6h 48m
Mon 1/115:15 pm -
1 stop7h 27m
Deal found 9/3![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:29 pm -
1 stop5h 30m
Thu 10/17:00 am -
Nonstop3h 54m
Deal found 9/2![United Airlines logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/18:27 am -
1 stop9h 46m
Thu 10/89:03 pm -
1 stop17h 14m
Deal found 9/3![Multiple Airlines logo]()
$310
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:00 am -
1 stop4h 45m
Sat 10/33:00 pm -
1 stop5h 35m
Deal found 8/31![Southwest logo]()
$282
This CheapOair deal was found by Cheapflights users on 8/31. 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 CheapOair 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 8/31![Allegiant Air logo]()
$267
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/269:00 am -
Nonstop3h 44m
Sat 10/34:20 pm -
1 stop5h 54m
Deal found 9/3![United Airlines logo]()
$277
This Delta deal was found by Cheapflights users on 9/4. 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.
Mon 12/1411:35 pm -
1 stop7h 24m
Thu 12/171:30 pm -
1 stop9h 42m
Deal found 9/4![Delta logo]()
$307
This American Airlines deal was found by Cheapflights users on 9/4. 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 10/33:34 pm -
1 stop6h 29m
Sat 10/102:30 pm -
1 stop8h 27m
Deal found 9/4![American Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/228:16 am -
1 stop9h 14m
Sun 10/258:53 pm -
1 stop23h 40m
Deal found 9/3![Multiple Airlines logo]()
$313
This CheapOair deal was found by Cheapflights users on 9/1. 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 9/98:10 am -
Nonstop3h 09m
Wed 9/162:09 pm -
Nonstop3h 25m
Deal found 9/1![Allegiant Air logo]()
$269
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:20 pm -
Nonstop3h 00m
Tue 10/66:20 am -
Nonstop3h 20m
Deal found 8/31![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/2. 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 10/281:31 pm -
1 stop6h 59m
Sat 10/316:00 am -
1 stop8h 06m
Deal found 9/2![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:37 pm -
Nonstop3h 37m
Mon 11/97:00 am -
1 stop5h 44m
Deal found 9/3![United Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/18:27 am -
1 stop9h 46m
Sun 10/410:08 am -
2 stops23h 05m
Deal found 9/3![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:40 am -
Nonstop3h 06m
Sun 11/298:55 pm -
Nonstop3h 38m
Deal found 8/30![Allegiant Air logo]()
$274
This Southwest deal was found by Cheapflights users on 9/1. 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 10/1010:35 am -
1 stop6h 10m
Mon 10/129:25 pm -
Nonstop3h 50m
Deal found 9/1![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 8/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/231:20 pm -
Nonstop3h 00m
Mon 10/59:50 pm -
Nonstop3h 25m
Deal found 8/31![Southwest logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Mon 11/308:51 pm -
Nonstop3h 38m
Deal found 8/30![Allegiant Air logo]()
$280
This Delta deal was found by Cheapflights users on 8/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/211:59 pm -
1 stop9h 19m
Mon 10/54:32 pm -
1 stop8h 10m
Deal found 8/31![Delta logo]()
$339
Last-minute flights from Phoenix to IllinoisDiscover last-minute flight deals from Phoenix to Illinois. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Illinois. Data last updated September 4, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/3. 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.
Wed 9/238:10 am -
Nonstop3h 09m
Mon 9/288:44 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$228
This CheapOair deal was found by Cheapflights users on 9/3. 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 9/251:02 pm -
Nonstop3h 09m
Mon 9/288:44 pm -
Nonstop3h 25m
Deal found 9/3![Allegiant Air logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:27 am -
1 stop19h 11m
Mon 10/56:30 am -
1 stop9h 47m
Deal found 9/2![Frontier logo]()
$230
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:16 am -
1 stop19h 00m
Thu 10/157:40 am -
1 stop29h 54m
Deal found 9/3![Frontier logo]()
$226
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:32 pm -
Nonstop3h 27m
Mon 10/126:20 am -
1 stop6h 55m
Deal found 9/2![Frontier logo]()
$228
This Kiwi.com deal was found by Cheapflights users on 9/1. 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.
Thu 10/87:32 pm -
Nonstop3h 27m
Tue 10/207:40 am -
1 stop8h 02m
Deal found 9/1![Frontier logo]()
$231
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:23 pm -
1 stop12h 11m
Mon 10/128:11 pm -
1 stop26h 31m
Deal found 9/3![Frontier logo]()
$227
This Super.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:32 pm -
Nonstop3h 27m
Fri 10/164:20 pm -
Nonstop4h 07m
Deal found 8/31![Frontier logo]()
$233
This Cheapflightsfares deal was found by Cheapflights users on 9/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:30 pm -
1 stop10h 04m
Mon 10/124:20 pm -
Nonstop4h 07m
Deal found 9/3![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 9/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1212:25 pm -
1 stop16h 09m
Mon 10/1912:26 pm -
1 stop8h 27m
Deal found 9/1![Frontier logo]()
$229
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:23 pm -
1 stop12h 11m
Sun 10/186:30 am -
1 stop27h 40m
Deal found 9/2![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 9/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:01 am -
1 stop7h 34m
Thu 10/2912:20 pm -
1 stop12h 40m
Deal found 9/3![Frontier logo]()
$228
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 September 4, 2026.
Search for one-way flight options from Phoenix to Illinois. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/266:25 am -
1 stop10h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:59 am -
1 stop6h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Frontier logo]()
$76
This Super.com deal was found by Cheapflights users on 9/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/73:21 pm -
1 stop6h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 9/2. 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.
Sat 10/317:15 am -
1 stop9h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$97
This CheapOair deal was found by Cheapflights users on 9/3. 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.
Wed 9/239:15 am -
1 stop8h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:56 pm -
1 stop20h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 9/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:49 pm -
1 stop12h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 10/96:20 am -
Nonstop3h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Allegiant Air logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:32 pm -
Nonstop3h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 10/198:16 am -
2 stops20h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:10 am -
Nonstop3h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Allegiant Air logo]()
$128
This iWofly deal was found by Cheapflights users on 9/3. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/187:32 pm -
Nonstop3h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$129
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 September 4, 2026.
Round-trip from | $226 (Cheapflightsfares) |
|---|---|
One-way from | $74 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $295 |
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 September 4, 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 10/14
8:10 am-1:17 pm
Nonstop3h 07m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$126
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Fri 10/9
6:20 am-11:27 am
Nonstop3h 07m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$126
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Tue 10/6
7:10 am-12:49 pm
Nonstop3h 39m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
PhoenixChicago
PHX Phoenix Sky Harbor Intl - MDW Chicago Midway
PHXMDW
Phoenix Sky Harbor Intl
Thu 10/1
7:55 pm-1:10 am
Nonstop3h 15m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Wed 10/7
10:00 am-3:38 pm
Nonstop3h 38m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
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
$134
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Tue 11/10
1:53 pm-6:30 pm
Nonstop3h 37m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
PhoenixChicago
PHX Phoenix Sky Harbor Intl - ORD Chicago O'Hare Intl
PHXORD
Phoenix Sky Harbor Intl
Mon 10/5
7:10 am-12:49 pm
Nonstop3h 39m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
PhoenixChicago
AZA Phoenix-Mesa Gateway - RFD Chicago Greater Rockford
AZARFD
Phoenix-Mesa Gateway
Mon 9/14
2:45 pm-7:54 pm
Nonstop3h 09m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$136
PhoenixChicago
PHX Phoenix Sky Harbor Intl - RFD Chicago Greater Rockford
PHXRFD
Phoenix Sky Harbor Intl
Thu 10/1
8:27 am-8:13 pm
1 stop9h 46m
Chicago Greater Rockford
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$137
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-MDW
PHX-ORD
PHX-RFD
PHX-BMI
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-MDW
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 September 4, 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 25% 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 September 4, 2026.
The most flights from PH1 to USIL are scheduled on a Thursday (54 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (35 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 $256 and $376 in October.The cheapest round-trip price found within the last 5 days was $226 on Frontier (Oct 8-Oct 12).
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 29, 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. 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 4, 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.
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Entertainment
7.5
Crew
8.6
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.
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 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 September 4, 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 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$199 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$293 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$206 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$173 | Average$259 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$346 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$192 | Average$395 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$440 | FlexibilityNo cancel fee | On-time71% |