$80+ Cheap flights from Illinois to Arizona
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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Apr 19 — Apr 261
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Arizona with Cheapflights
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Cheapest flights from Illinois to ArizonaExplore the most affordable flight options available from Illinois to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.
Explore the most affordable flight options available from Illinois to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.
This CheapOair deal was found by Cheapflights users on 3/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:07 am
ORD
- LAS
1 stop10h 25m
Frontier
Fri 4/2412:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/16![Frontier logo]()
$149
This Cheapflightsfares deal was found by Cheapflights users on 3/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/198:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Fri 4/2412:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/18![Frontier logo]()
$150
This Priceline deal was found by Cheapflights users on 3/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:58 pm
ORD
- LAS
Nonstop4h 27m
Multiple Airlines
Wed 4/1511:51 pm
LAS
- ORD
Nonstop3h 34m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$151
This CheapOair deal was found by Cheapflights users on 3/18. 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.
Sat 4/114:36 pm
ORD
- LAS
1 stop9h 13m
Spirit Airlines
Sat 4/182:59 pm
LAS
- ORD
1 stop12h 36m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$152
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/149:45 am
ORD
- LAS
1 stop12h 04m
Spirit Airlines
Sat 4/1811:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/19![Spirit Airlines logo]()
$153
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/223:27 pm
ORD
- LAS
1 stop10h 32m
Frontier
Thu 4/2312:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/17![Frontier logo]()
$154
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Fri 5/112:20 am
LAS
- ORD
Nonstop3h 48m
Frontier
Deal found 3/17![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Sat 5/98:52 pm
ORD
- LAS
Nonstop4h 02m
Multiple Airlines
Wed 5/139:22 am
LAS
- ORD
1 stop11h 51m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$156
This CheapOair deal was found by Cheapflights users on 3/18. 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.
Thu 4/1610:07 pm
ORD
- LAS
Nonstop3h 52m
Spirit Airlines
Wed 4/222:59 pm
LAS
- ORD
1 stop6h 28m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/93:50 pm
ORD
- LAS
1 stop9h 17m
Multiple Airlines
Wed 4/1511:51 pm
LAS
- ORD
Nonstop3h 34m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 5/98:52 pm
ORD
- LAS
Nonstop4h 02m
Spirit Airlines
Thu 5/1411:51 pm
LAS
- ORD
Nonstop3h 34m
Spirit Airlines
Deal found 3/19![Spirit Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/136:40 am
ORD
- PHX
Nonstop4h 10m
Frontier
Fri 4/2410:29 pm
PHX
- ORD
1 stop11h 04m
Frontier
Deal found 3/16![Frontier logo]()
$160
Best flights from Illinois to ArizonaDiscover carefully curated flight deals from Illinois to Arizona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 20, 2026.
Discover carefully curated flight deals from Illinois to Arizona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Wed 5/62:51 pm
RFD
- AZA
Nonstop3h 34m
Allegiant Air
Fri 5/82:44 pm
AZA
- RFD
Nonstop3h 01m
Allegiant Air
Deal found 3/19![Allegiant Air logo]()
$172
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:05 am
MDW
- PHX
1 stop5h 05m
Southwest
Tue 4/2111:55 pm
PHX
- MDW
Nonstop3h 05m
Southwest
Deal found 3/19![Southwest logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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.
Mon 6/83:28 pm
ORD
- LAS
1 stop9h 20m
Alaska Airlines
Fri 6/127:59 am
LAS
- ORD
1 stop9h 01m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/17. 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 5/99:10 am
ORD
- LAS
Nonstop4h 15m
United Airlines
Tue 5/1210:43 am
LAS
- ORD
Nonstop3h 50m
United Airlines
Deal found 3/17![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 3/19. 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.
Wed 5/271:22 pm
MDW
- PHX
1 stop6h 21m
Delta
Sun 5/3112:59 am
PHX
- MDW
1 stop5h 43m
Delta
Deal found 3/19![Delta logo]()
$271
This Booking.com deal was found by Cheapflights users on 3/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:51 pm
RFD
- AZA
Nonstop3h 34m
Allegiant Air
Mon 5/182:44 pm
AZA
- RFD
Nonstop3h 01m
Allegiant Air
Deal found 3/16![Allegiant Air logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/62:51 pm
RFD
- LAS
1 stop10h 47m
Multiple Airlines
Sun 5/106:40 am
LAS
- RFD
Nonstop3h 20m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 7/298:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Fri 7/313:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Fri 7/179:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Mon 7/273:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 3/19![Allegiant Air logo]()
$188
This Southwest deal was found by Cheapflights users on 3/17. 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.
Sat 5/167:00 am
ORD
- PHX
Nonstop3h 55m
Southwest
Tue 5/196:30 pm
PHX
- ORD
Nonstop3h 25m
Southwest
Deal found 3/17![Southwest logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 3/19. 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.
Mon 5/48:35 pm
RFD
- AZA
Nonstop3h 34m
Allegiant Air
Mon 5/112:44 pm
AZA
- RFD
Nonstop3h 01m
Allegiant Air
Deal found 3/19![Allegiant Air logo]()
$188
This United Airlines deal was found by Cheapflights users on 3/19. 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.
Fri 5/14:05 pm
ORD
- PHX
Nonstop4h 05m
United Airlines
Sun 5/311:30 pm
PHX
- ORD
Nonstop3h 31m
United Airlines
Deal found 3/19![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/138:50 pm
MDW
- PHX
Nonstop3h 40m
Southwest
Sat 6/206:50 pm
PHX
- MDW
Nonstop3h 15m
Southwest
Deal found 3/19![Southwest logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 7/298:49 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Sat 8/17:00 am
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$197
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 6/22:00 pm
ORD
- PHX
1 stop9h 07m
Delta
Sat 6/612:59 am
PHX
- ORD
1 stop8h 30m
Delta
Deal found 3/19![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:55 pm
MDW
- PHX
Nonstop3h 50m
Southwest
Sun 5/311:55 pm
PHX
- MDW
Nonstop3h 05m
Southwest
Deal found 3/19![Southwest logo]()
$257
This Booking.com deal was found by Cheapflights users on 3/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:50 pm
RFD
- AZA
Nonstop3h 24m
Allegiant Air
Mon 6/294:06 pm
AZA
- RFD
Nonstop3h 09m
Allegiant Air
Deal found 3/16![Allegiant Air logo]()
$200
This Alaska Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/228:50 am
ORD
- LAS
1 stop7h 09m
Alaska Airlines
Wed 4/296:00 am
LAS
- ORD
2 stops15h 59m
Alaska Airlines
Deal found 3/15![Alaska Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 3/18. 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.
Sat 5/237:45 pm
ORD
- LAS
Nonstop4h 09m
United Airlines
Tue 5/263:52 pm
LAS
- ORD
Nonstop3h 56m
United Airlines
Deal found 3/18![United Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 3/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:24 am
ORD
- PHX
1 stop6h 25m
Delta
Sun 5/246:05 am
PHX
- ORD
1 stop6h 52m
Delta
Deal found 3/16![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/56:15 am
ORD
- LAS
Nonstop4h 00m
Southwest
Fri 5/85:10 pm
LAS
- ORD
Nonstop3h 45m
Southwest
Deal found 3/14![Southwest logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 7/279:13 pm
RFD
- AZA
Nonstop3h 22m
Allegiant Air
Fri 7/313:15 pm
AZA
- RFD
Nonstop3h 08m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$209
This Southwest deal was found by Cheapflights users on 3/17. 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.
Sat 4/256:25 pm
MDW
- LAS
Nonstop3h 55m
Southwest
Sat 5/25:45 am
LAS
- MDW
Nonstop3h 30m
Southwest
Deal found 3/17![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 6/125:41 pm
STL
- LAS
1 stop8h 12m
United Airlines
Thu 6/2512:36 am
LAS
- STL
1 stop6h 05m
United Airlines
Deal found 3/15![United Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 3/19. 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.
Fri 7/176:45 pm
MDW
- PHX
1 stop6h 11m
Delta
Mon 7/2710:55 pm
PHX
- MDW
1 stop7h 47m
Delta
Deal found 3/19![Delta logo]()
$337
This Booking.com deal was found by Cheapflights users on 3/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:35 pm
RFD
- AZA
Nonstop3h 34m
Allegiant Air
Fri 5/223:17 pm
AZA
- RFD
Nonstop3h 06m
Allegiant Air
Deal found 3/17![Allegiant Air logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/912:50 pm
RFD
- LAS
Nonstop3h 49m
Multiple Airlines
Wed 4/1512:19 pm
LAS
- RFD
2 stops19h 28m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 4/207:20 pm
ORD
- PHX
Nonstop3h 55m
Southwest
Sun 4/2611:55 pm
PHX
- ORD
1 stop7h 50m
Southwest
Deal found 3/14![Southwest logo]()
$267
This Alaska Airlines deal was found by Cheapflights users on 3/16. 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.
Tue 4/73:50 pm
STL
- PHX
1 stop10h 02m
Alaska Airlines
Tue 4/148:45 pm
PHX
- STL
1 stop25h 14m
Alaska Airlines
Deal found 3/16![Alaska Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 3/16. 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 4/218:15 pm
ORD
- PHX
Nonstop4h 05m
United Airlines
Sat 4/254:30 pm
PHX
- ORD
Nonstop3h 30m
United Airlines
Deal found 3/16![United Airlines logo]()
$336
Last-minute flights from Illinois to ArizonaDiscover last-minute flight deals from Illinois to Arizona. Data last updated March 20, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Arizona. Data last updated March 20, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/136:40 am
ORD
- PHX
Nonstop4h 10m
Frontier
Fri 4/2410:29 pm
PHX
- ORD
1 stop11h 04m
Frontier
Deal found 3/16![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/165:20 am
ORD
- PHX
1 stop12h 38m
Frontier
Fri 4/2411:19 am
PHX
- ORD
Nonstop3h 41m
Frontier
Deal found 3/15![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/197:50 am
ORD
- PHX
Nonstop4h 22m
Multiple Airlines
Thu 4/2310:29 pm
PHX
- ORD
1 stop9h 54m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$166
This Cheapflightsfares deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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.
Mon 4/207:35 am
ORD
- PHX
Nonstop4h 22m
Frontier
Fri 4/2411:19 am
PHX
- ORD
Nonstop3h 41m
Frontier
Deal found 3/15![Frontier logo]()
$161
This Priceline deal was found by Cheapflights users on 3/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:20 am
MDW
- PHX
Nonstop3h 57m
Frontier
Thu 4/236:00 am
PHX
- MDW
1 stop11h 31m
Frontier
Deal found 3/16![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/216:10 am
MDW
- PHX
2 stops13h 47m
Frontier
Fri 4/244:34 pm
PHX
- MDW
Nonstop3h 16m
Frontier
Deal found 3/17![Frontier logo]()
$168
This Expedia deal was found by Cheapflights users on 3/16. 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.
Thu 4/236:20 am
MDW
- PHX
Nonstop3h 57m
Frontier
Mon 4/274:39 pm
PHX
- MDW
Nonstop3h 16m
Frontier
Deal found 3/16![Frontier logo]()
$167
This Expedia deal was found by Cheapflights users on 3/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/247:50 am
ORD
- PHX
Nonstop4h 22m
Multiple Airlines
Tue 4/283:43 pm
PHX
- ORD
1 stop19h 30m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Fri 4/247:50 am
ORD
- PHX
Nonstop4h 22m
Multiple Airlines
Mon 4/2710:29 pm
PHX
- ORD
1 stop9h 54m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$170
This Booking.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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.
Sun 4/266:20 am
MDW
- PHX
Nonstop3h 57m
Frontier
Mon 4/274:39 pm
PHX
- MDW
Nonstop3h 16m
Frontier
Deal found 3/15![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Sun 4/267:50 am
ORD
- PHX
Nonstop4h 22m
Multiple Airlines
Sun 5/1711:30 pm
PHX
- ORD
1 stop9h 16m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$167
This CheapOair deal was found by Cheapflights users on 3/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:50 am
ORD
- PHX
Nonstop4h 22m
Frontier
Thu 4/308:22 pm
PHX
- ORD
1 stop7h 58m
Frontier
Deal found 3/17![Frontier logo]()
$169
One-way flights from Illinois to ArizonaSearch for one-way flight options from Illinois to Arizona. Find affordable one-way fares based on user searches. Data last updated March 20, 2026.
Search for one-way flight options from Illinois to Arizona. Find affordable one-way fares based on user searches. Data last updated March 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/178:35 pm
RFD
- AZA
Nonstop3h 34m
Allegiant Air
Deal found 3/16![Allegiant Air logo]()
$80
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:25 am
ORD
- PHX
Nonstop4h 15m
Frontier
Deal found 3/17![Frontier logo]()
$83
This Cheapflightsfares deal was found by Cheapflights users on 3/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/248:58 pm
ORD
- LAS
Nonstop4h 27m
Frontier
Deal found 3/19![Frontier logo]()
$84
This Super.com deal was found by Cheapflights users on 3/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/45:15 am
ORD
- LAS
1 stop15h 57m
Spirit Airlines
Deal found 3/16![Spirit Airlines logo]()
$85
This CheapOair deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/297:30 am
ORD
- LAS
1 stop7h 06m
Spirit Airlines
Deal found 3/15![Spirit Airlines logo]()
$86
This iWofly deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/158:52 pm
ORD
- LAS
Nonstop4h 02m
Spirit Airlines
Deal found 3/14![Spirit Airlines logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 4/147:21 pm
ORD
- PHX
1 stop23h 59m
Frontier
Deal found 3/15![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:36 pm
ORD
- LAS
1 stop9h 13m
Spirit Airlines
Deal found 3/17![Spirit Airlines logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” 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 5/1712:50 pm
RFD
- LAS
Nonstop3h 49m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$88
This Super.com deal was found by Cheapflights users on 3/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1312:22 pm
STL
- LAS
Nonstop3h 46m
Frontier
Deal found 3/17![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 3/17. 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.
Fri 4/178:06 pm
STL
- PHX
1 stop23h 41m
Frontier
Deal found 3/17![Frontier logo]()
$88
This CheapOair deal was found by Cheapflights users on 3/18. 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.
Thu 4/93:21 pm
ORD
- LAS
1 stop9h 48m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$89
Find flight deals from Illinois to Arizona
Keep the following information in mind while searching for Illinois to Arizona flight deals. Data was last updated March 20, 2026.
Round-trip from | $149 (CheapOair) |
|---|---|
One-way from | $80 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $327 |
Good round-trip deal | $167 or less |
Good one-way deal | $80 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Arizona 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 March 20, 2026.
Use the filters below to find and compare flights from Illinois to Arizona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 5/6
2:51 pm-4:25 pm
Nonstop3h 34m
Phoenix-Mesa Gateway
Fri 5/8
2:44 pm-7:45 pm
Nonstop3h 01m
$172
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 5/13
2:51 pm-4:25 pm
Nonstop3h 34m
Phoenix-Mesa Gateway
Mon 5/18
2:44 pm-7:45 pm
Nonstop3h 01m
$181
Quickest round-trip
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 7/29
8:49 pm-10:11 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Fri 7/31
3:15 pm-8:23 pm
Nonstop3h 08m
$188
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Fri 7/17
9:13 pm-10:35 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Mon 7/27
3:15 pm-8:23 pm
Nonstop3h 08m
$188
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Mon 5/4
8:35 pm-10:09 pm
Nonstop3h 34m
Phoenix-Mesa Gateway
Mon 5/11
2:44 pm-7:45 pm
Nonstop3h 01m
$188
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 7/29
8:49 pm-10:11 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Sat 8/1
7:00 am-12:08 pm
Nonstop3h 08m
$197
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Wed 6/10
8:50 pm-10:14 pm
Nonstop3h 24m
Phoenix-Mesa Gateway
Mon 6/29
4:06 pm-9:15 pm
Nonstop3h 09m
$200
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Mon 7/27
9:13 pm-10:35 pm
Nonstop3h 22m
Phoenix-Mesa Gateway
Fri 7/31
3:15 pm-8:23 pm
Nonstop3h 08m
$209
ChicagoPhoenix
RFD - AZA
RFDAZA
Chicago Greater Rockford
Fri 5/15
8:35 pm-10:09 pm
Nonstop3h 34m
Phoenix-Mesa Gateway
Fri 5/22
3:17 pm-8:23 pm
Nonstop3h 06m
$215
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Tue 4/14
10:05 am-1:10 pm
1 stop5h 05m
Phoenix Sky Harbor Intl
Tue 4/21
11:55 pm-5:00 am
Nonstop3h 05m
$243
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Arizona
Have a flexible travel schedule? Discover the best time to fly to Arizona from Illinois with our price prediction graph.
RFD-LAS
STL-PHX
MDW-PHX
ORD-PHX
ORD-LAS
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 Arizona
USIL-USAZ
RFD-LAS
STL-PHX
MDW-PHX
ORD-PHX
What is the cheapest month to book a flight from Illinois to Arizona?
Currently, January is the cheapest month in which you can book a flight from Illinois to Arizona (average of $63). Flying from Illinois to Arizona in July is currently the most expensive (average of $134). 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 AZ?
Find hourly flight availability from Illinois to Arizona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 20, 2026.
One of the essential ways to save on airfare from Illinois to Arizona is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 12% on airfare.
What is the cheapest day to fly from Illinois to Arizona?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Arizona. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Illinois to Arizona flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Arizona
Explore weekly flight availability from Illinois to Arizona. 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 March 20, 2026.
The most flights from USIL to USAZ are scheduled on a Wednesday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (38 on average).
Reviews of airlines servicing Arizona
Get insights into the airlines that provide service to Arizona. 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 Arizona. Reviews last updated March 20, 2026.
Read through reviews of airlines operating flights from Illinois to Arizona, such as Southwest,United Airlines, andAllegiant Air. 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.
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Illinois to Arizona. 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 Illinois to Arizona
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Arizona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Arizona by cabin class
Find flights from Illinois to Arizona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Arizona flights
Browse other Illinois and Arizona flight options. Last updated on March 20, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Arizona
Find the right flight back to Illinois after your stay in Arizona
Illinois to Arizona flights
Consider these flights traveling from Illinois to Arizona.
Top 9 airlines flying from Illinois to Arizona
Discover the top 9 airlines that operate flights from Illinois to Arizona. 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 March 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$66 | Average$247 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$66 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$69 | Average$159 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$108 | Average$315 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$154 | Average$231 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$181 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$184 | Average$336 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$193 | Average$459 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$205 | Average$374 | FlexibilityNo cancel fee | On-time63% |