$73+ Cheap flights from Mesa, AZ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Cheapest flights from Mesa to IllinoisExplore the most affordable flight options available from Mesa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
Explore the most affordable flight options available from Mesa to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:15 am
PHX
- STL
1 stop8h 02m
Frontier
Tue 10/208:10 pm
STL
- PHX
1 stop13h 01m
Frontier
Deal found 7/28![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:15 am
PHX
- STL
1 stop8h 02m
Frontier
Wed 9/238:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/31![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/158:56 pm
PHX
- STL
1 stop20h 21m
Frontier
Sat 9/198:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:36 pm
PHX
- STL
1 stop22h 39m
Frontier
Tue 10/138:10 pm
STL
- PHX
1 stop22h 52m
Frontier
Deal found 7/31![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/22:15 pm
PHX
- STL
1 stop26h 58m
Frontier
Wed 9/98:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:29 am
PHX
- STL
1 stop5h 48m
Frontier
Wed 9/168:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/30![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:56 pm
PHX
- STL
1 stop20h 21m
Frontier
Mon 9/148:10 pm
STL
- PHX
1 stop13h 50m
Frontier
Deal found 7/31![Frontier logo]()
$190
This Frontier deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:00 am
PHX
- ORD
1 stop9h 25m
Frontier
Mon 10/124:00 pm
ORD
- PHX
Nonstop3h 59m
Frontier
Deal found 7/29![Frontier logo]()
$244
This Priceline deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Wed 9/212:19 pm
PHX
- MDW
1 stop8h 28m
Frontier
Sat 9/511:45 am
MDW
- PHX
1 stop8h 46m
Frontier
Deal found 7/27![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:03 am
PHX
- ORD
1 stop7h 59m
Frontier
Wed 8/262:41 pm
ORD
- PHX
1 stop18h 59m
Frontier
Deal found 7/29![Frontier logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am
PHX
- RFD
1 stop10h 39m
Multiple Airlines
Sun 9/139:29 pm
RFD
- PHX
1 stop27h 18m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$245
This Orbitz deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/173:22 pm
PHX
- ORD
1 stop7h 23m
Multiple Airlines
Sun 9/206:00 am
ORD
- PHX
1 stop9h 02m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$246
Best flights from Mesa to IllinoisDiscover carefully curated flight deals from Mesa to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
Discover carefully curated flight deals from Mesa to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/108:00 am
PHX
- RFD
1 stop10h 39m
Multiple Airlines
Sun 9/139:29 pm
RFD
- PHX
1 stop27h 18m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/89:45 am
PHX
- ORD
Nonstop3h 45m
United Airlines
Tue 9/157:45 pm
ORD
- PHX
Nonstop3h 52m
United Airlines
Deal found 7/28![United Airlines logo]()
$253
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/123:00 pm
PHX
- MDW
Nonstop3h 15m
Southwest
Sat 9/199:55 am
MDW
- PHX
1 stop5h 05m
Southwest
Deal found 7/29![Southwest logo]()
$263
This Alaska Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:15 pm
PHX
- ORD
1 stop20h 07m
Alaska Airlines
Sat 9/267:20 am
ORD
- PHX
1 stop9h 13m
Alaska Airlines
Deal found 7/31![Alaska Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/221:58 pm
PHX
- ORD
1 stop5h 49m
Delta
Mon 8/247:44 pm
ORD
- PHX
1 stop6h 28m
Delta
Deal found 7/28![Delta logo]()
$273
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:08 am
PHX
- BMI
1 stop5h 41m
American Airlines
Sat 10/102:30 pm
BMI
- PHX
1 stop6h 39m
American Airlines
Deal found 7/28![American Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:03 am
PHX
- RFD
1 stop9h 42m
Multiple Airlines
Sun 8/239:35 pm
RFD
- PHX
2 stops16h 02m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$258
This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/167:49 pm
PHX
- ORD
1 stop15h 33m
Alaska Airlines
Wed 9/232:18 pm
ORD
- PHX
1 stop6h 49m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$265
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:50 am
PHX
- MDW
1 stop5h 15m
Southwest
Tue 10/67:40 am
MDW
- PHX
1 stop6h 00m
Southwest
Deal found 7/30![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/151:20 pm
PHX
- ORD
1 stop6h 35m
Delta
Sat 9/267:45 am
ORD
- PHX
1 stop6h 30m
Delta
Deal found 7/29![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:23 am
PHX
- ORD
1 stop7h 09m
United Airlines
Sat 9/51:25 pm
ORD
- PHX
Nonstop3h 50m
United Airlines
Deal found 7/31![United Airlines logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:03 am
PHX
- RFD
1 stop9h 42m
Multiple Airlines
Sun 8/309:35 pm
RFD
- PHX
1 stop17h 13m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$260
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:00 am
PHX
- ORD
1 stop10h 21m
Alaska Airlines
Sun 9/66:01 am
ORD
- PHX
1 stop7h 30m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/259:51 am
PHX
- ORD
1 stop6h 28m
Delta
Sat 10/36:10 am
ORD
- PHX
1 stop6h 15m
Delta
Deal found 7/29![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:15 am
PHX
- MDW
1 stop5h 50m
Southwest
Sat 9/56:15 pm
MDW
- PHX
Nonstop3h 45m
Southwest
Deal found 7/31![Southwest logo]()
$276
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:24 am
PHX
- ORD
Nonstop3h 36m
United Airlines
Sat 10/1711:00 am
ORD
- PHX
Nonstop3h 56m
United Airlines
Deal found 7/30![United Airlines logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 7/30![Multiple Airlines logo]()
$262
This Alaska Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/227:49 pm
PHX
- ORD
1 stop15h 33m
Alaska Airlines
Thu 9/247:20 am
ORD
- PHX
1 stop9h 13m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:05 pm
PHX
- MDW
1 stop8h 02m
Delta
Tue 9/151:19 pm
MDW
- PHX
1 stop7h 56m
Delta
Deal found 7/28![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am
PHX
- STL
Nonstop2h 55m
Southwest
Tue 10/68:50 pm
STL
- PHX
Nonstop3h 15m
Southwest
Deal found 7/31![Southwest logo]()
$277
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:17 pm
PHX
- ORD
1 stop6h 06m
United Airlines
Sat 10/107:00 am
ORD
- PHX
Nonstop3h 54m
United Airlines
Deal found 7/31![United Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:05 am
PHX
- RFD
1 stop10h 25m
Multiple Airlines
Sun 11/18:53 pm
RFD
- PHX
1 stop15h 56m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$270
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 10/2912:50 am
PHX
- MDW
1 stop5h 54m
Delta
Sat 11/712:27 pm
MDW
- PHX
1 stop6h 14m
Delta
Deal found 7/29![Delta logo]()
$274
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/283:05 pm
PHX
- MDW
Nonstop3h 15m
Southwest
Wed 9/165:20 pm
MDW
- PHX
Nonstop3h 40m
Southwest
Deal found 7/27![Southwest logo]()
$278
This American Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/121:40 pm
PHX
- BMI
2 stops8h 19m
American Airlines
Sun 8/166:32 am
BMI
- PHX
1 stop6h 45m
American Airlines
Deal found 7/28![American Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2610:09 pm
PHX
- RFD
1 stop20h 36m
Multiple Airlines
Sun 8/309:35 pm
RFD
- PHX
2 stops16h 02m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:25 pm
PHX
- STL
Nonstop3h 00m
Southwest
Wed 9/234:45 pm
STL
- PHX
1 stop5h 50m
Southwest
Deal found 7/31![Southwest logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/178:00 am
PHX
- RFD
1 stop10h 39m
Multiple Airlines
Sun 9/209:29 pm
RFD
- PHX
1 stop16h 53m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/231:05 pm
PHX
- MLI
1 stop8h 25m
Delta
Fri 1/811:00 am
MLI
- PHX
1 stop8h 36m
Delta
Deal found 7/31![Delta logo]()
$324
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:00 am
PHX
- MDW
1 stop4h 45m
Southwest
Sun 11/16:05 pm
MDW
- PHX
Nonstop3h 55m
Southwest
Deal found 7/27![Southwest logo]()
$296
Last-minute flights from Mesa to IllinoisDiscover last-minute flight deals from Mesa to Illinois. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals from Mesa to Illinois. Data last updated August 1, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:19 pm
PHX
- MDW
1 stop8h 28m
Frontier
Sat 8/2211:45 am
MDW
- PHX
1 stop8h 46m
Frontier
Deal found 8/1![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:35 am
PHX
- STL
1 stop10h 38m
Frontier
Sun 8/237:58 pm
STL
- PHX
1 stop16h 13m
Frontier
Deal found 7/29![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:35 am
PHX
- STL
1 stop8h 38m
Frontier
Thu 8/277:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/27![Frontier logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop16h 13m
Frontier
Deal found 7/30![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Tue 8/255:27 pm
STL
- PHX
1 stop7h 33m
Frontier
Deal found 7/30![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Thu 8/277:58 pm
STL
- PHX
1 stop5h 41m
Frontier
Deal found 7/28![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:35 am
PHX
- STL
1 stop8h 38m
Frontier
Fri 8/286:17 pm
STL
- PHX
1 stop26h 14m
Frontier
Deal found 7/28![Frontier logo]()
$215
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:35 am
PHX
- MDW
Nonstop3h 15m
Southwest
Wed 9/25:20 pm
MDW
- PHX
Nonstop3h 40m
Southwest
Deal found 7/30![Southwest logo]()
$253
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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.
Wed 8/2612:19 pm
PHX
- MDW
1 stop8h 28m
Frontier
Sat 8/2911:45 am
MDW
- PHX
1 stop8h 46m
Frontier
Deal found 7/29![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:35 am
PHX
- STL
1 stop10h 38m
Frontier
Mon 8/317:58 pm
STL
- PHX
1 stop16h 13m
Frontier
Deal found 7/29![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:35 am
PHX
- STL
1 stop8h 38m
Frontier
Thu 9/35:27 pm
STL
- PHX
1 stop7h 33m
Frontier
Deal found 7/30![Frontier logo]()
$217
This Frontier deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Thu 8/276:00 am
PHX
- MDW
1 stop12h 31m
Frontier
Sat 8/2911:45 am
MDW
- PHX
1 stop8h 46m
Frontier
Deal found 7/28![Frontier logo]()
$244
One-way flights from Mesa to IllinoisSearch for one-way flight options from Mesa to Illinois. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
Search for one-way flight options from Mesa to Illinois. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/309:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/31![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:56 pm
PHX
- STL
1 stop20h 21m
Frontier
Deal found 7/31![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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.
Wed 10/79:15 am
PHX
- STL
1 stop8h 02m
Frontier
Deal found 7/28![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:56 pm
PHX
- STL
1 stop20h 21m
Frontier
Deal found 7/28![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/264:48 pm
PHX
- STL
1 stop24h 25m
Frontier
Deal found 7/29![Frontier logo]()
$93
This Trip.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:06 am
PHX
- STL
1 stop8h 09m
Frontier
Deal found 7/31![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/283:40 pm
PHX
- STL
1 stop25h 35m
Frontier
Deal found 7/30![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/219:10 am
PHX
- ORD
1 stop28h 49m
Frontier
Deal found 7/29![Frontier logo]()
$124
This Priceline deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/2812:19 pm
PHX
- MDW
1 stop8h 28m
Frontier
Deal found 7/28![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/194:48 pm
PHX
- RFD
2 stops20h 21m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:10 am
PHX
- ORD
1 stop28h 49m
Frontier
Deal found 7/30![Frontier logo]()
$125
This Cheapflightsfares deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/19:10 am
PHX
- ORD
1 stop28h 49m
Frontier
Deal found 7/29![Frontier logo]()
$126
Find flight deals from Mesa to Illinois
Keep the following information in mind while searching for Mesa to Illinois flight deals. Data was last updated August 1, 2026.
Round-trip from | $152 (Kiwi.com) |
|---|---|
One-way from | $73 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $277 |
Cheapflights Fare Finder
Customize your flight search to find flights from Mesa to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
Use the filters below to find and compare flights from Mesa to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixChicago
PHX - RFD
PHXRFD
Phoenix Sky Harbor Intl
Thu 9/10
8:00 am-8:39 pm
1 stop10h 39m
Chicago Greater Rockford
Sun 9/13
9:29 pm-10:47 pm
1 stop27h 18m
$245
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 9/8
9:45 am-3:30 pm
Nonstop3h 45m
Chicago O'Hare Intl
Tue 9/15
7:45 pm-9:37 pm
Nonstop3h 52m
$253
PhoenixChicago
PHX - RFD
PHXRFD
Phoenix Sky Harbor Intl
Thu 8/20
9:03 am-8:45 pm
1 stop9h 42m
Chicago Greater Rockford
Sun 8/23
9:35 pm-11:37 am
2 stops16h 02m
$258
PhoenixChicago
PHX - RFD
PHXRFD
Phoenix Sky Harbor Intl
Thu 8/27
9:03 am-8:45 pm
1 stop9h 42m
Chicago Greater Rockford
Sun 8/30
9:35 pm-12:48 pm
1 stop17h 13m
$260
PhoenixChicago
PHX - RFD
PHXRFD
Phoenix Sky Harbor Intl
Thu 10/22
6:30 am-7:30 pm
1 stop11h 00m
Chicago Greater Rockford
Sun 10/25
8:53 pm-10:13 am
1 stop15h 20m
$262
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Sat 9/12
3:00 pm-8:15 pm
Nonstop3h 15m
Chicago Midway
Sat 9/19
9:55 am-1:00 pm
1 stop5h 05m
$263
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 9/15
3:15 pm-1:22 pm
1 stop20h 07m
Chicago O'Hare Intl
Sat 9/26
7:20 am-2:33 pm
1 stop9h 13m
$265
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Wed 9/16
7:49 pm-1:22 pm
1 stop15h 33m
Chicago O'Hare Intl
Wed 9/23
2:18 pm-7:07 pm
1 stop6h 49m
$265
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Wed 9/2
7:00 am-7:21 pm
1 stop10h 21m
Chicago O'Hare Intl
Sun 9/6
6:01 am-11:31 am
1 stop7h 30m
$265
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Sat 10/3
5:50 am-1:05 pm
1 stop5h 15m
Chicago Midway
Tue 10/6
7:40 am-11:40 am
1 stop6h 00m
$268
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Mesa to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Mesa with our price prediction graph.
PHX-STL
PHX-MDW
PHX-ORD
PHX-RFD
PHX-BMI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Mesa to Illinois
MS9-USIL
PHX-STL
PHX-MDW
PHX-ORD
PHX-RFD
What is the cheapest time of day to fly from MS9 to IL?
Find hourly flight availability from Mesa to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 1, 2026.
It’s typically best to fly out from Mesa to Illinois in the afternoon. Doing so could potentially save you 26% on the flight price compared to flying in the evening, which is usually more expensive.
Weekly flight availability from Mesa to Illinois
Explore weekly flight availability from Mesa to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 1, 2026.
The most flights from MS9 to USIL are scheduled on a Friday (56 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Mesa to Illinois?
Airfare is typical for this route at the moment.
Mesa to Illinois flights typically cost between $234 and $366 in October.The cheapest round-trip price found within the last 5 days was $244 on Frontier (Oct 10-Oct 12).
What is the cheapest day to fly from Mesa to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Mesa to Illinois. Price data was last updated on August 1, 2026.
Travelers seeking maximum savings on their Mesa to Illinois flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated August 1, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from Mesa 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.
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Mesa to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Mesa to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Mesa to Illinois by cabin class
Find flights from Mesa to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Mesa and Illinois flights
Browse other Mesa and Illinois flight options. Last updated on August 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Mesa after your stay in Illinois
Mesa to Illinois flights
Consider these flights traveling from Mesa to Illinois.
Top 7 airlines flying from Mesa to Illinois
Discover the top 7 airlines that operate flights from Mesa to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$187 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$286 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$124 | Average$208 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$173 | Average$247 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$343 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$193 | Average$396 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$198 | Average$449 | FlexibilityNo cancel fee | On-time71% |