$77+ Cheap flights from Illinois to Phoenix
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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Jul 21 — Jul 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Illinois to Phoenix 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 Illinois to Phoenix
Cheapest
Best
Last-minute
One-way
Cheapest flights from Illinois to PhoenixExplore the most affordable flight options available from Illinois to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.
Explore the most affordable flight options available from Illinois to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 21, 2026.
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.
Tue 9/16:45 pm
STL
- PHX
1 stop6h 39m
Frontier
Fri 9/410:30 pm
PHX
- STL
1 stop17h 20m
Frontier
Deal found 6/20![Frontier logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/63:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/16![Allegiant Air logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:10 pm
STL
- PHX
2 stops22h 21m
Frontier
Thu 8/137:45 am
PHX
- STL
1 stop8h 30m
Frontier
Deal found 6/16![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:06 am
MDW
- PHX
1 stop10h 38m
Frontier
Sat 8/89:50 pm
PHX
- MDW
1 stop10h 01m
Frontier
Deal found 6/16![Frontier logo]()
$240
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/13:41 pm
STL
- PHX
1 stop9h 18m
Frontier
Tue 8/411:19 am
PHX
- STL
1 stop6h 04m
Frontier
Deal found 6/20![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Thu 7/307:45 am
PHX
- STL
1 stop8h 30m
Frontier
Deal found 6/16![Frontier logo]()
$241
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.
Sat 7/118:08 pm
STL
- PHX
1 stop5h 24m
Frontier
Tue 7/219:58 pm
PHX
- STL
1 stop18h 07m
Frontier
Deal found 6/18![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:11 pm
MDW
- PHX
1 stop9h 33m
Frontier
Wed 8/511:23 pm
PHX
- MDW
1 stop8h 28m
Frontier
Deal found 6/16![Frontier logo]()
$243
This Frontier deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:46 pm
MDW
- PHX
1 stop7h 13m
Frontier
Sat 8/89:50 pm
PHX
- MDW
1 stop10h 01m
Frontier
Deal found 6/16![Frontier logo]()
$245
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:25 am
ORD
- PHX
Nonstop3h 44m
American Airlines
Tue 7/211:15 am
PHX
- ORD
Nonstop3h 35m
American Airlines
Deal found 6/16![American Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:10 pm
STL
- PHX
1 stop18h 17m
Frontier
Wed 7/299:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/16![Frontier logo]()
$245
This Expedia deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/274:10 pm
MDW
- PHX
1 stop8h 54m
Frontier
Sat 7/46:24 am
PHX
- MDW
1 stop6h 51m
Frontier
Deal found 6/16![Frontier logo]()
$246
Best flights from Illinois to PhoenixDiscover carefully curated flight deals from Illinois to Phoenix that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 21, 2026.
Discover carefully curated flight deals from Illinois to Phoenix that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 21, 2026.
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Wed 7/82:51 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$252
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:20 am
ORD
- PHX
1 stop8h 43m
Alaska Airlines
Wed 10/287:36 am
PHX
- ORD
1 stop9h 17m
Alaska Airlines
Deal found 6/19![Alaska Airlines logo]()
$255
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.
Wed 8/193:15 pm
MDW
- PHX
Nonstop3h 35m
Southwest
Mon 8/244:00 pm
PHX
- MDW
1 stop5h 45m
Southwest
Deal found 6/18![Southwest logo]()
$263
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.
Sat 10/105:20 pm
ORD
- PHX
1 stop7h 54m
Delta
Tue 10/1311:55 pm
PHX
- ORD
1 stop6h 39m
Delta
Deal found 6/20![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:00 am
ORD
- PHX
1 stop6h 00m
United Airlines
Thu 8/66:50 am
PHX
- ORD
Nonstop3h 38m
United Airlines
Deal found 6/16![United Airlines logo]()
$285
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:45 am
ORD
- AZA
1 stop6h 31m
Sun Country Air
Thu 11/126:04 pm
AZA
- ORD
1 stop23h 21m
Sun Country Air
Deal found 6/19![Sun Country Air logo]()
$325
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.
Thu 7/96:25 am
PIA
- PHX
1 stop8h 35m
American Airlines
Sat 7/1112:50 am
PHX
- PIA
1 stop6h 27m
American Airlines
Deal found 6/20![American Airlines logo]()
$364
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.
Sat 10/108:33 pm
SPI
- PHX
1 stop29h 23m
Multiple Airlines
Tue 10/205:55 pm
PHX
- SPI
2 stops22h 51m
Multiple Airlines
Deal found 6/20![Multiple Airlines logo]()
$485
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/39:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/63:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$262
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.
Wed 7/297:40 pm
ORD
- PHX
1 stop5h 51m
Delta
Sat 8/111:04 pm
PHX
- ORD
1 stop6h 55m
Delta
Deal found 6/20![Delta logo]()
$265
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 9/1910:05 am
MDW
- PHX
2 stops6h 40m
Southwest
Sat 9/2611:15 am
PHX
- MDW
1 stop5h 50m
Southwest
Deal found 6/20![Southwest logo]()
$266
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:59 pm
ORD
- PHX
1 stop7h 24m
Alaska Airlines
Fri 7/241:05 pm
PHX
- ORD
1 stop8h 31m
Alaska Airlines
Deal found 6/16![Alaska Airlines 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 9/31:30 pm
ORD
- PHX
Nonstop3h 50m
United Airlines
Tue 9/84:49 pm
PHX
- ORD
1 stop5h 10m
United Airlines
Deal found 6/19![United Airlines logo]()
$285
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.
Tue 12/15:55 pm
ORD
- PHX
1 stop7h 11m
Delta
Tue 12/811:59 pm
PHX
- ORD
1 stop7h 05m
Delta
Deal found 6/18![Delta logo]()
$265
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/43:05 pm
MDW
- PHX
1 stop5h 50m
Southwest
Wed 8/512:35 am
PHX
- MDW
Nonstop3h 15m
Southwest
Deal found 6/16![Southwest logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Fri 7/33:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/16![Allegiant Air logo]()
$271
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.
Sat 7/185:59 pm
ORD
- PHX
1 stop7h 24m
Alaska Airlines
Tue 7/213:13 pm
PHX
- ORD
1 stop6h 23m
Alaska Airlines
Deal found 6/18![Alaska Airlines logo]()
$290
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:40 am
MDW
- PHX
Nonstop3h 35m
Southwest
Mon 9/218:05 am
PHX
- MDW
Nonstop3h 15m
Southwest
Deal found 6/17![Southwest logo]()
$269
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/203:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$271
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/245:10 pm
MDW
- PHX
1 stop7h 31m
Delta
Thu 8/2711:56 pm
PHX
- MDW
1 stop8h 03m
Delta
Deal found 6/17![Delta logo]()
$289
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 7/79:02 am
ORD
- PHX
Nonstop4h 01m
United Airlines
Tue 7/142:45 pm
PHX
- ORD
Nonstop3h 42m
United Airlines
Deal found 6/18![United Airlines logo]()
$320
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.
Mon 8/107:55 pm
MDW
- PHX
Nonstop3h 35m
Southwest
Mon 8/178:05 am
PHX
- MDW
Nonstop3h 15m
Southwest
Deal found 6/20![Southwest logo]()
$269
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.
Wed 9/167:20 am
ORD
- PHX
1 stop9h 13m
Alaska Airlines
Sun 9/2012:13 pm
PHX
- ORD
1 stop9h 46m
Alaska Airlines
Deal found 6/20![Alaska Airlines logo]()
$296
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 7/18:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/63:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/20![Allegiant Air logo]()
$271
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.
Mon 8/175:20 pm
ORD
- PHX
1 stop6h 12m
Delta
Mon 8/241:18 pm
PHX
- ORD
1 stop8h 39m
Delta
Deal found 6/20![Delta logo]()
$289
This Sun Country Air 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:32 pm
ORD
- AZA
1 stop22h 44m
Sun Country Air
Sun 11/225:34 pm
AZA
- ORD
1 stop16h 02m
Sun Country Air
Deal found 6/18![Sun Country Air logo]()
$385
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/255:43 pm
PIA
- PHX
1 stop6h 44m
United Airlines
Sat 8/12:45 pm
PHX
- PIA
1 stop6h 35m
United Airlines
Deal found 6/17![United Airlines logo]()
$329
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
ORD
- PHX
1 stop8h 37m
Delta
Tue 9/86:00 am
PHX
- ORD
1 stop8h 14m
Delta
Deal found 6/19![Delta logo]()
$289
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.
Fri 9/117:10 am
MDW
- PHX
Nonstop3h 35m
Southwest
Sun 9/1312:35 am
PHX
- MDW
Nonstop3h 15m
Southwest
Deal found 6/20![Southwest logo]()
$293
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.
Wed 6/248:50 pm
RFD
- AZA
Nonstop3h 24m
Allegiant Air
Fri 6/264:06 pm
AZA
- RFD
Nonstop3h 09m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$293
Last-minute flights from Illinois to PhoenixDiscover last-minute flight deals from Illinois to Phoenix. Data last updated June 21, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Phoenix. Data last updated June 21, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/274:10 pm
MDW
- PHX
1 stop8h 54m
Frontier
Sat 7/46:24 am
PHX
- MDW
1 stop6h 51m
Frontier
Deal found 6/16![Frontier logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/41:03 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/63:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 6/16![Allegiant Air logo]()
$238
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 7/98:08 pm
STL
- PHX
1 stop5h 24m
Frontier
Tue 7/219:58 pm
PHX
- STL
1 stop18h 07m
Frontier
Deal found 6/18![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:10 pm
STL
- PHX
1 stop18h 17m
Frontier
Wed 7/299:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/16![Frontier logo]()
$246
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.
Sat 7/118:08 pm
STL
- PHX
1 stop5h 24m
Frontier
Wed 7/159:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/18![Frontier logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:10 pm
STL
- PHX
1 stop18h 17m
Frontier
Wed 7/299:58 pm
PHX
- STL
1 stop18h 17m
Frontier
Deal found 6/16![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Thu 7/307:45 am
PHX
- STL
1 stop8h 30m
Frontier
Deal found 6/16![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:11 pm
MDW
- PHX
1 stop9h 33m
Frontier
Wed 8/511:23 pm
PHX
- MDW
1 stop8h 28m
Frontier
Deal found 6/16![Frontier logo]()
$243
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:45 am
MDW
- PHX
Nonstop3h 40m
Southwest
Tue 7/215:45 pm
PHX
- MDW
Nonstop3h 25m
Southwest
Deal found 6/16![Southwest logo]()
$245
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:25 am
ORD
- PHX
Nonstop3h 44m
American Airlines
Tue 7/211:15 am
PHX
- ORD
Nonstop3h 35m
American Airlines
Deal found 6/16![American Airlines logo]()
$245
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2212:11 pm
MDW
- PHX
1 stop9h 33m
Frontier
Mon 7/2711:23 pm
PHX
- MDW
1 stop9h 44m
Frontier
Deal found 6/17![Frontier logo]()
$249
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/253:41 pm
STL
- PHX
1 stop9h 18m
Frontier
Tue 7/282:04 pm
PHX
- STL
1 stop26h 01m
Frontier
Deal found 6/20![Frontier logo]()
$240
One-way flights from Illinois to PhoenixSearch for one-way flight options from Illinois to Phoenix. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
Search for one-way flight options from Illinois to Phoenix. Find affordable one-way fares based on user searches. Data last updated June 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/277:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 6/17![Frontier logo]()
$77
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 7/217:03 pm
STL
- PHX
1 stop19h 56m
Frontier
Deal found 6/18![Frontier logo]()
$78
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.
Mon 8/177:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 6/18![Frontier logo]()
$81
This WAYA 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:03 pm
STL
- PHX
1 stop6h 02m
Frontier
Deal found 6/18![Frontier logo]()
$82
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/188:00 am
STL
- PHX
1 stop17h 24m
Frontier
Deal found 6/20![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:03 pm
STL
- PHX
1 stop19h 56m
Frontier
Deal found 6/17![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 6/16![Frontier logo]()
$86
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 7/207:10 pm
STL
- PHX
1 stop19h 49m
Frontier
Deal found 6/20![Frontier logo]()
$90
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 8/216:45 pm
STL
- PHX
1 stop20h 03m
Frontier
Deal found 6/20![Frontier logo]()
$92
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2812:20 pm
MDW
- PHX
1 stop4h 45m
Southwest
Deal found 6/16![Southwest logo]()
$128
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:20 am
ORD
- PHX
1 stop8h 03m
Alaska Airlines
Deal found 6/17![Alaska Airlines logo]()
$128
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MDW
- PHX
1 stop6h 42m
Frontier
Deal found 6/20![Frontier logo]()
$129
Find flight deals from Illinois to Phoenix
Keep the following information in mind while searching for Illinois to Phoenix flight deals. Data was last updated June 21, 2026.
Round-trip from | $237 (Kiwi.com) |
|---|---|
One-way from | $77 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $348 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Phoenix 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 21, 2026.
Use the filters below to find and compare flights from Illinois to Phoenix that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 7/1
8:49 pm-10:11 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Wed 7/8
2:51 pm-7:59 pm
Nonstop3h 08m
$252
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Sat 10/24
7:20 am-2:03 pm
1 stop8h 43m
Phoenix Sky Harbor Intl
Wed 10/28
7:36 am-6:53 pm
1 stop9h 17m
$255
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Fri 7/3
9:13 pm-10:35 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Mon 7/6
3:15 pm-8:23 pm
Nonstop3h 08m
$262
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Wed 8/19
3:15 pm-4:50 pm
Nonstop3h 35m
Phoenix Sky Harbor Intl
Mon 8/24
4:00 pm-11:45 pm
1 stop5h 45m
$263
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Sat 10/10
5:20 pm-11:14 pm
1 stop7h 54m
Phoenix Sky Harbor Intl
Tue 10/13
11:55 pm-8:34 am
1 stop6h 39m
$265
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Wed 7/29
7:40 pm-11:31 pm
1 stop5h 51m
Phoenix Sky Harbor Intl
Sat 8/1
11:04 pm-7:59 am
1 stop6h 55m
$265
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Tue 12/1
5:55 pm-12:06 am
1 stop7h 11m
Phoenix Sky Harbor Intl
Tue 12/8
11:59 pm-8:04 am
1 stop7h 05m
$265
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Sat 9/19
10:05 am-2:45 pm
2 stops6h 40m
Phoenix Sky Harbor Intl
Sat 9/26
11:15 am-7:05 pm
1 stop5h 50m
$266
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Tue 8/4
3:05 pm-6:55 pm
1 stop5h 50m
Phoenix Sky Harbor Intl
Wed 8/5
12:35 am-5:50 am
Nonstop3h 15m
$267
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Thu 9/17
5:40 am-7:15 am
Nonstop3h 35m
Phoenix Sky Harbor Intl
Mon 9/21
8:05 am-1:20 pm
Nonstop3h 15m
$269
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Phoenix
Have a flexible travel schedule? Discover the best time to fly to Phoenix from Illinois with our price prediction graph.
RFD-AZA
STL-PHX
MDW-PHX
ORD-PHX
ORD-AZA
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 Illinois to Phoenix
USIL-PH1
RFD-AZA
STL-PHX
MDW-PHX
ORD-PHX
What is the cheapest month to book a flight from Illinois to Phoenix?
Currently, January is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $225). Flying from Illinois to Phoenix in December is currently the most expensive (average of $364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to PHX?
Find hourly flight availability from Illinois to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 21, 2026.
When flying from Illinois to Phoenix, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 13% versus a flight in the morning.
Weekly flight availability from Illinois to Phoenix
Explore weekly flight availability from Illinois to Phoenix. 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 21, 2026.
The most flights from USIL to PH1 are scheduled on a Friday (53 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).
How much does it cost to fly round-trip from Illinois to Phoenix?
How far ahead should I book a flight from Illinois to Phoenix?
To ensure you get the cheapest price possible for a flight from Illinois to Phoenix, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Illinois to Phoenix?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Phoenix. Price data was last updated on June 20, 2026.
Travelers seeking maximum savings on their Illinois to Phoenix flight should consider departing on Friday afternoons when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Phoenix. 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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Illinois to Phoenix
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Phoenix by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Phoenix by cabin class
Find flights from Illinois to Phoenix, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Phoenix flights
Browse other Illinois and Phoenix flight options. Last updated on June 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Phoenix flights
Consider these flights traveling from Illinois to Phoenix.
Top 8 airlines flying from Illinois to Phoenix
Discover the top 8 airlines that operate flights from Illinois to Phoenix. 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 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$65 | Average$223 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$108 | Average$296 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$119 | Average$223 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$184 | Average$388 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$188 | Average$328 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$196 | Average$415 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$203 | Average$332 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$220 | Average$269 | FlexibilityNo cancel fee | On-time75% |