$77+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Jul 23 — Jul 301
Round-trip
1 adult, Economy
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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 June 23, 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 June 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:04 pm
PHX
- MLI
1 stop19h 37m
Multiple Airlines
Sun 8/1612:31 pm
MLI
- PHX
1 stop12h 34m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:04 pm
PHX
- MLI
1 stop19h 37m
Multiple Airlines
Sat 8/158:44 am
MLI
- PHX
2 stops16h 21m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:09 pm
PHX
- MLI
1 stop12h 07m
Multiple Airlines
Sun 8/301:06 pm
MLI
- PHX
2 stops28h 47m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:17 am
PHX
- ORD
1 stop7h 35m
Frontier
Sat 8/157:15 am
ORD
- PHX
1 stop17h 50m
Frontier
Deal found 6/19![Frontier logo]()
$253
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:50 pm
PHX
- MDW
1 stop11h 17m
Frontier
Wed 7/294:45 pm
MDW
- PHX
1 stop8h 14m
Frontier
Deal found 6/18![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/223:11 pm
AZA
- RFD
Nonstop3h 09m
Allegiant Air
Wed 7/18:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$253
This Gotogate deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Sat 7/41:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$254
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/214:25 pm
PHX
- ORD
1 stop6h 19m
United Airlines
Tue 7/2810:25 am
ORD
- PHX
Nonstop4h 01m
United Airlines
Deal found 6/23![United Airlines logo]()
$255
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Sat 7/254:50 pm
MDW
- PHX
1 stop6h 05m
Southwest
Deal found 6/23![Southwest logo]()
$255
This CheapOair deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:04 pm
PHX
- ORD
Nonstop3h 29m
Frontier
Sun 10/2511:06 am
ORD
- PHX
1 stop26h 01m
Frontier
Deal found 6/21![Frontier logo]()
$256
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:45 pm
PHX
- MDW
Nonstop3h 25m
Southwest
Tue 7/2810:00 am
MDW
- PHX
2 stops7h 20m
Southwest
Deal found 6/23![Southwest logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:05 am
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Mon 7/139:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$256
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 June 23, 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 June 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/83:13 pm
PHX
- ORD
1 stop20h 08m
Alaska Airlines
Wed 8/192:18 pm
ORD
- PHX
1 stop6h 49m
Alaska Airlines
Deal found 6/20![Alaska Airlines logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/133:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Wed 7/158:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/23![Allegiant Air logo]()
$259
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/226:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Tue 7/286:55 pm
MDW
- PHX
Nonstop3h 40m
Southwest
Deal found 6/22![Southwest logo]()
$260
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:20 pm
PHX
- ORD
1 stop6h 32m
Delta
Wed 9/237:45 am
ORD
- PHX
1 stop6h 30m
Delta
Deal found 6/22![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:49 pm
PHX
- ORD
1 stop5h 10m
United Airlines
Sat 8/1511:00 am
ORD
- PHX
Nonstop3h 56m
United Airlines
Deal found 6/18![United Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/129:58 pm
PHX
- RFD
1 stop12h 36m
Multiple Airlines
Sun 8/169:21 am
RFD
- PHX
2 stops15h 44m
Multiple Airlines
Deal found 6/21![Multiple Airlines logo]()
$284
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:55 pm
PHX
- BMI
1 stop6h 04m
American Airlines
Mon 2/84:03 pm
BMI
- PHX
1 stop6h 44m
American Airlines
Deal found 6/18![American Airlines logo]()
$329
This Mytrip deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Sat 7/111:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/21![Allegiant Air logo]()
$259
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:35 am
PHX
- MDW
1 stop4h 35m
Southwest
Thu 8/277:55 pm
MDW
- PHX
Nonstop3h 35m
Southwest
Deal found 6/18![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:36 am
PHX
- MDW
1 stop6h 43m
Delta
Sat 9/261:19 pm
MDW
- PHX
1 stop7h 58m
Delta
Deal found 6/21![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:19 pm
PHX
- ORD
1 stop5h 27m
United Airlines
Mon 9/147:37 pm
ORD
- PHX
Nonstop3h 52m
United Airlines
Deal found 6/20![United Airlines logo]()
$279
This CheapOair deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/103:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Mon 7/139:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$263
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:00 pm
PHX
- MDW
1 stop5h 45m
Southwest
Mon 8/318:00 am
MDW
- PHX
1 stop5h 50m
Southwest
Deal found 6/21![Southwest logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:05 am
PHX
- RFD
1 stop11h 34m
Multiple Airlines
Sun 9/139:29 pm
RFD
- PHX
1 stop21h 21m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$311
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:26 pm
PHX
- ORD
Nonstop3h 39m
United Airlines
Tue 9/86:00 am
ORD
- PHX
1 stop6h 37m
United Airlines
Deal found 6/23![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2711:05 pm
PHX
- ORD
1 stop6h 51m
Delta
Mon 8/315:20 pm
ORD
- PHX
1 stop6h 12m
Delta
Deal found 6/21![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:05 am
PHX
- BMI
1 stop5h 55m
American Airlines
Mon 2/82:56 pm
BMI
- PHX
1 stop6h 23m
American Airlines
Deal found 6/18![American Airlines logo]()
$329
This Gotogate deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Wed 7/158:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$272
This Alaska Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/241:05 pm
PHX
- ORD
1 stop8h 31m
Alaska Airlines
Mon 7/276:20 am
ORD
- PHX
1 stop8h 03m
Alaska Airlines
Deal found 6/18![Alaska Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:05 am
PHX
- RFD
1 stop11h 34m
Multiple Airlines
Sun 9/279:29 pm
RFD
- PHX
1 stop26h 06m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$322
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:56 pm
PHX
- MLI
1 stop8h 29m
Delta
Tue 8/186:00 am
MLI
- PHX
1 stop8h 08m
Delta
Deal found 6/18![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/114:34 pm
PHX
- BMI
1 stop5h 29m
American Airlines
Sun 9/135:02 am
BMI
- PHX
1 stop5h 52m
American Airlines
Deal found 6/20![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/33:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Fri 7/109:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/22![Allegiant Air logo]()
$274
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:19 pm
PHX
- ORD
1 stop6h 40m
United Airlines
Sun 9/69:12 am
ORD
- PHX
Nonstop3h 56m
United Airlines
Deal found 6/20![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Sat 7/255:05 pm
MDW
- PHX
1 stop7h 15m
Southwest
Deal found 6/20![Southwest logo]()
$311
This American Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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.
Wed 7/221:35 pm
PHX
- BMI
1 stop7h 33m
American Airlines
Wed 7/294:30 pm
BMI
- PHX
1 stop6h 32m
American Airlines
Deal found 6/22![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:30 am
PHX
- RFD
1 stop11h 00m
Multiple Airlines
Sun 10/258:53 pm
RFD
- PHX
1 stop15h 20m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:51 am
PHX
- ORD
1 stop6h 28m
Delta
Tue 9/81:55 pm
ORD
- PHX
1 stop7h 22m
Delta
Deal found 6/20![Delta logo]()
$301
This Booking.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/133:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Sat 7/2512:58 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/22![Allegiant Air logo]()
$276
This United Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:26 pm
PHX
- ORD
Nonstop3h 39m
United Airlines
Mon 9/711:00 am
ORD
- PHX
Nonstop3h 56m
United Airlines
Deal found 6/19![United Airlines logo]()
$324
Last-minute flights from Phoenix to IllinoisDiscover last-minute flight deals from Phoenix to Illinois. Data last updated June 23, 2026 and is based on user searches.
Discover last-minute flight deals from Phoenix to Illinois. Data last updated June 23, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Sat 7/41:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$254
This American Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:09 pm
PHX
- ORD
Nonstop3h 42m
American Airlines
Wed 7/1510:35 pm
ORD
- PHX
Nonstop3h 39m
American Airlines
Deal found 6/21![American Airlines logo]()
$260
This Mytrip deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Sat 7/111:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/21![Allegiant Air logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:05 am
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Mon 7/139:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Deal found 6/21![Allegiant Air logo]()
$253
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Sat 7/254:50 pm
MDW
- PHX
1 stop6h 05m
Southwest
Deal found 6/23![Southwest logo]()
$255
This Frontier deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:50 pm
PHX
- MDW
1 stop11h 17m
Frontier
Fri 7/246:17 pm
MDW
- PHX
1 stop6h 42m
Frontier
Deal found 6/22![Frontier logo]()
$259
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/186:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Wed 7/225:25 am
MDW
- PHX
Nonstop3h 35m
Southwest
Deal found 6/23![Southwest logo]()
$260
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/215:45 pm
PHX
- MDW
Nonstop3h 25m
Southwest
Tue 7/2810:00 am
MDW
- PHX
2 stops7h 20m
Southwest
Deal found 6/23![Southwest logo]()
$256
This Southwest deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:50 pm
PHX
- MDW
Nonstop3h 20m
Southwest
Thu 8/65:40 am
MDW
- PHX
Nonstop3h 35m
Southwest
Deal found 6/20![Southwest logo]()
$257
This Super.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/2411:23 pm
PHX
- MDW
1 stop9h 44m
Frontier
Mon 7/2712:11 pm
MDW
- PHX
1 stop9h 33m
Frontier
Deal found 6/22![Frontier logo]()
$258
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:50 pm
PHX
- MDW
1 stop11h 17m
Frontier
Wed 7/294:45 pm
MDW
- PHX
1 stop8h 14m
Frontier
Deal found 6/18![Frontier logo]()
$253
This Frontier deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:23 pm
PHX
- MDW
1 stop9h 44m
Frontier
Wed 7/2912:11 pm
MDW
- PHX
1 stop9h 33m
Frontier
Deal found 6/18![Frontier logo]()
$262
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 June 23, 2026.
Search for one-way flight options from Phoenix to Illinois. Find affordable one-way fares based on user searches. Data last updated June 23, 2026.
This Trip.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:45 am
PHX
- STL
1 stop8h 30m
Frontier
Deal found 6/21![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/149:58 pm
PHX
- STL
1 stop18h 07m
Frontier
Deal found 6/21![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/21![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1810:09 pm
PHX
- STL
1 stop17h 41m
Frontier
Deal found 6/21![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:58 pm
PHX
- STL
1 stop18h 07m
Frontier
Deal found 6/18![Frontier logo]()
$90
This Trip.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/77:45 am
PHX
- STL
1 stop8h 30m
Frontier
Deal found 6/21![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/169:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/18![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/21![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:40 pm
PHX
- ORD
1 stop27h 55m
Frontier
Deal found 6/20![Frontier logo]()
$129
This Priceline deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3111:23 pm
PHX
- MDW
1 stop9h 44m
Frontier
Deal found 6/21![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:58 pm
PHX
- ORD
1 stop29h 39m
Frontier
Deal found 6/18![Frontier logo]()
$130
This Booking.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:24 am
PHX
- MDW
1 stop9h 02m
Frontier
Deal found 6/19![Frontier logo]()
$130
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 June 23, 2026.
Round-trip from | $213 (Kiwi.com) |
|---|---|
One-way from | $77 (Trip.com) |
Popular in | June |
Cheapest in | February |
Average price | $338 |
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 June 23, 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
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Sat 8/8
3:13 pm-1:21 pm
1 stop20h 08m
Chicago O'Hare Intl
Wed 8/19
2:18 pm-7:07 pm
1 stop6h 49m
$255
Quickest round-trip
PhoenixChicago
AZA - RFD
AZARFD
Phoenix-Mesa Gateway
Mon 7/13
3:15 pm-8:23 pm
Nonstop3h 08m
Chicago Greater Rockford
Wed 7/15
8:49 pm-10:11 pm
Nonstop3h 22m
$259
PhoenixChicago
AZA - RFD
AZARFD
Phoenix-Mesa Gateway
Wed 7/8
2:51 pm-7:59 pm
Nonstop3h 08m
Chicago Greater Rockford
Sat 7/11
1:03 pm-2:25 pm
Nonstop3h 22m
$259
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Wed 7/22
6:50 pm-12:10 am
Nonstop3h 20m
Chicago Midway
Tue 7/28
6:55 pm-8:35 pm
Nonstop3h 40m
$260
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Tue 8/25
10:35 am-5:10 pm
1 stop4h 35m
Chicago Midway
Thu 8/27
7:55 pm-9:30 pm
Nonstop3h 35m
$263
PhoenixChicago
AZA - RFD
AZARFD
Phoenix-Mesa Gateway
Fri 7/10
3:15 pm-8:23 pm
Nonstop3h 08m
Chicago Greater Rockford
Mon 7/13
9:13 pm-10:35 pm
Nonstop3h 22m
$263
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Wed 9/16
1:20 pm-9:52 pm
1 stop6h 32m
Chicago O'Hare Intl
Wed 9/23
7:45 am-12:15 pm
1 stop6h 30m
$265
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Tue 9/15
9:36 am-6:19 pm
1 stop6h 43m
Chicago Midway
Sat 9/26
1:19 pm-7:17 pm
1 stop7h 58m
$265
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 8/11
4:49 pm-11:59 pm
1 stop5h 10m
Chicago O'Hare Intl
Sat 8/15
11:00 am-12:56 pm
Nonstop3h 56m
$267
PhoenixChicago
AZA - RFD
AZARFD
Phoenix-Mesa Gateway
Wed 7/8
2:51 pm-7:59 pm
Nonstop3h 08m
Chicago Greater Rockford
Wed 7/15
8:49 pm-10:11 pm
Nonstop3h 22m
$272
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
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
PHX-ORD
AZA-RFD
PHX-MDW
PHX-RFD
What is the cheapest month to book a flight from Phoenix to Illinois?
Currently, September is the cheapest month in which you can book a flight from Phoenix to Illinois (average of $261). Flying from Phoenix to Illinois in January is currently the most expensive (average of $659). 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 June 23, 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 June 23, 2026.
The most flights from PH1 to USIL are scheduled on a Tuesday (55 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (44 on average).
How much does it cost to fly round-trip from Phoenix to Illinois?
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 June 20, 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 June 23, 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
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Food
7.0
Overall
7.9
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
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Alternative routes for Phoenix to Illinois
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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 June 23, 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 2,558,603 searches. Data last updated June 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$191 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$130 | Average$209 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$158 | Average$247 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$334 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$188 | Average$392 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$433 | FlexibilityNo cancel fee | On-time71% |