$49+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Jan 14 — Jan 211
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Mesa to Illinois
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 December 15, 2025.
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 December 15, 2025.
This WAYA deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” 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 12/243:43 pmPHX - ORD
1 stop7h 29mFrontier
Sun 1/188:41 pmORD - PHX
Nonstop4h 16mFrontier
Deal found 12/13![Frontier logo]()
$118
This Cheapflightsfares deal was found by Cheapflights users on 12/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/253:40 pmPHX - ORD
Nonstop3h 43mFrontier
Thu 1/19:33 pmORD - PHX
Nonstop3h 54mFrontier
Deal found 12/14![Frontier logo]()
$138
This Travelocity deal was found by Cheapflights users on 12/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amPHX - ORD
1 stop16h 12mFrontier
Sun 1/188:41 pmORD - PHX
Nonstop4h 16mFrontier
Deal found 12/14![Frontier logo]()
$165
This Travelocity deal was found by Cheapflights users on 12/14. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:00 amPHX - MDW
1 stop13h 50mFrontier
Sun 1/188:19 pmMDW - PHX
Nonstop4h 10mFrontier
Deal found 12/14![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” 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 12/2310:26 pmPHX - ORD
2 stops24h 46mFrontier
Sat 1/176:02 pmORD - PHX
Nonstop4h 14mFrontier
Deal found 12/12![Frontier logo]()
$166
This CheapOair deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” 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 12/317:00 amPHX - ORD
1 stop16h 12mFrontier
Mon 1/51:32 pmORD - PHX
Nonstop4h 08mFrontier
Deal found 12/13![Frontier logo]()
$168
This Expedia deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” 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.
Tue 12/237:00 amPHX - ORD
1 stop16h 12mFrontier
Sun 1/188:41 pmORD - PHX
Nonstop4h 16mFrontier
Deal found 12/13![Frontier logo]()
$171
This Super.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:22 pmPHX - MDW
1 stop6h 50mFrontier
Sun 1/188:19 pmMDW - PHX
Nonstop4h 10mFrontier
Deal found 12/13![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/2310:26 pmPHX - ORD
2 stops24h 46mFrontier
Thu 1/19:33 pmORD - PHX
Nonstop3h 54mFrontier
Deal found 12/14![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 12/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:43 pmPHX - ORD
1 stop7h 29mFrontier
Thu 1/19:33 pmORD - PHX
Nonstop3h 54mFrontier
Deal found 12/15![Frontier logo]()
$180
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:31 pmPHX - MDW
1 stop22h 19mFrontier
Mon 1/1912:57 pmMDW - PHX
Nonstop4h 04mFrontier
Deal found 12/15![Frontier logo]()
$182
This Expedia deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” 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.
Mon 12/2910:26 pmPHX - STL
1 stop21h 59mFrontier
Fri 1/210:10 pmSTL - PHX
1 stop12h 30mFrontier
Deal found 12/13![Frontier logo]()
$183
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 December 15, 2025.
Round-trip from | $100 (Kiwi.com) |
|---|---|
One-way from | $49 (Frontier) |
Popular in | December |
Cheapest in | January |
Average price | $315 |
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 December 15, 2025.
Use the filters below to find and compare flights from Mesa to Illinois that are best for you.
Fly from
Mesa
Fly to
Illinois
Route
Depart
Return
Price
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Fri 1/16
7:34 pm-7:27 am
2 stops10h 53m
Chicago Midway
Mon 1/19
12:57 pm-4:01 pm
Nonstop4h 04m
$136
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Wed 2/11
6:35 pm-10:50 pm
Nonstop3h 15m
Chicago Midway
Tue 2/17
5:00 am-8:10 am
Nonstop4h 10m
$177
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Wed 2/4
8:30 am-2:46 pm
1 stop5h 16m
Lambert-St Louis
Sat 2/7
3:46 pm-11:53 pm
1 stop9h 07m
$182
PhoenixSt. Louis
PHX - STL
PHXSTL
Phoenix Sky Harbor Intl
Mon 12/29
10:26 pm-9:25 pm
1 stop21h 59m
Lambert-St Louis
Fri 1/2
10:10 pm-9:40 am
1 stop12h 30m
$183
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Tue 1/13
5:05 pm-9:15 pm
Nonstop3h 10m
Chicago Midway
Tue 1/20
7:50 pm-10:45 pm
Nonstop3h 55m
$188
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 1/13
3:45 pm-11:37 pm
1 stop6h 52m
Chicago O'Hare Intl
Tue 1/20
9:00 am-7:25 pm
1 stop11h 25m
$197
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Thu 1/15
3:45 pm-11:37 pm
1 stop6h 52m
Chicago O'Hare Intl
Tue 1/20
9:00 am-7:25 pm
1 stop11h 25m
$197
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 2/24
4:27 pm-11:59 pm
1 stop6h 32m
Chicago O'Hare Intl
Sat 2/28
8:20 am-3:45 pm
1 stop8h 25m
$197
PhoenixChicago
PHX - MDW
PHXMDW
Phoenix Sky Harbor Intl
Wed 2/11
5:00 am-9:15 am
Nonstop3h 15m
Chicago Midway
Sun 2/15
5:15 pm-8:15 pm
Nonstop4h 00m
$197
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Wed 1/21
3:50 pm-8:24 pm
Nonstop3h 34m
Chicago O'Hare Intl
Wed 1/28
4:20 pm-7:22 pm
Nonstop4h 02m
$199
Showing 1-10 of 60 results
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.
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
What is the cheapest month to book a flight from Mesa to Illinois?
Currently, December is the cheapest month in which you can book a flight from Mesa to Illinois (average of $62). Flying from Mesa to Illinois in June is currently the most expensive (average of $178). 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 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 December 15, 2025.
It’s typically best to fly out from Mesa to Illinois in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.
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 December 16, 2024.
Travelers seeking maximum savings on their Mesa to Illinois flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 December 15, 2025.
The most flights from MS9 to USIL are scheduled on a Monday (46 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).
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 December 15, 2025.
See what other customers who have flown with Southwest, United Airlines, and American 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.
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
7.9
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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 December 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$208 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$81 | Average$210 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$106 | Average$211 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$149 | Average$334 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$162 | Average$355 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$182 | Average$333 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$198 | Average$443 | FlexibilityNo cancel fee | On-time71% |