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Mesa

$39+ Cheap flights from Illinois to Mesa, AZ

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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap flight deals from Illinois to Mesa

Keep the following information in mind while searching for Illinois to Mesa flight deals. Data was last updated October 14, 2025.

Round-trip from

$154
(Frontier)

One-way from

$39
(Priceline)

Popular in

March

Cheapest in

August

Average price

$268
From Illinois to Mesa
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One-way flight from Illinois to Mesa
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Highest demand for flights based on searches. 5% potential increase in price ($15 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Illinois to Mesa

Cheapest flights from Illinois to Mesa
Explore the most affordable flight options available from Illinois to Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:09 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 11/177:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/12$154
This Mytrip deal was found by Cheapflights users on 10/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:40 pmSTL - PHX
1 stop21h 31mFrontier
Mon 11/37:25 amPHX - STL
Nonstop2h 59mFrontier
Deal found 10/13$155
This CheapOair deal was found by Cheapflights users on 10/13. 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.
Mon 10/205:28 pmMDW - PHX
1 stop21h 49mFrontier
Thu 10/3011:28 amPHX - MDW
Nonstop3h 25mFrontier
Deal found 10/13$156
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/511:20 amORD - PHX
2 stops11h 38mFrontier
Sun 11/168:15 pmPHX - ORD
Nonstop3h 35mFrontier
Deal found 10/14$156
This Booking.com deal was found by Cheapflights users on 10/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/27:45 pmSTL - PHX
1 stop13h 39mFrontier
Thu 11/68:43 pmPHX - STL
1 stop11h 24mFrontier
Deal found 10/12$156
This Kiwi.com deal was found by Cheapflights users on 10/12. 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.
Mon 11/106:27 pmMDW - PHX
1 stop6h 17mFrontier
Sat 11/154:39 pmPHX - MDW
2 stops17h 51mFrontier
Deal found 10/12$157
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/57:58 pmORD - PHX
1 stop14h 19mMultiple Airlines
Sun 11/168:15 pmPHX - ORD
Nonstop3h 35mMultiple Airlines
Deal found 10/14$157
This Mytrip deal was found by Cheapflights users on 10/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:09 pmSTL - PHX
Nonstop3h 22mFrontier
Sun 11/27:30 amPHX - STL
1 stop24h 37mFrontier
Deal found 10/14$157
This Kiwi.com deal was found by Cheapflights users on 10/12. 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.
Fri 12/52:45 pmMDW - PHX
1 stop10h 45mFrontier
Mon 12/82:01 pmPHX - MDW
1 stop8h 04mFrontier
Deal found 10/12$158
This Kiwi.com deal was found by Cheapflights users on 10/14. 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.
Fri 11/76:30 amORD - PHX
1 stop16h 53mFrontier
Wed 11/125:16 pmPHX - ORD
1 stop28h 44mFrontier
Deal found 10/14$158
This Frontier deal was found by Cheapflights users on 10/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:59 pmSTL - PHX
Nonstop3h 22mFrontier
Mon 10/202:27 pmPHX - STL
Nonstop2h 59mFrontier
Deal found 10/12$158
This CheapOair deal was found by Cheapflights users on 10/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:00 amMDW - PHX
Nonstop3h 54mFrontier
Sun 11/165:35 amPHX - MDW
1 stop10h 36mFrontier
Deal found 10/12$159

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Mesa 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 October 14, 2025.
Use the filters below to find and compare flights from Illinois to Mesa that are best for you.

Fly from

Illinois

Fly to

Mesa

Route

Depart

Return

Price

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/17

11:15 am-2:15 pm

Nonstop4h 00m

Phoenix Sky Harbor Intl

Tue 12/30

12:45 am-5:10 am

Nonstop3h 25m

$188

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 12/2

8:59 pm-9:40 am

1 stop13h 41m

Phoenix Sky Harbor Intl

Sat 12/6

6:00 am-4:55 pm

1 stop9h 55m

$218

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Sat 11/15

1:45 pm-7:45 pm

2 stops7h 00m

Phoenix Sky Harbor Intl

Wed 11/19

8:25 am-12:20 pm

Nonstop2h 55m

$224

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Mon 11/10

1:15 pm-7:17 pm

1 stop7h 02m

Phoenix Sky Harbor Intl

Thu 11/13

12:59 am-9:01 am

1 stop7h 02m

$237

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Thu 1/1

9:50 am-4:30 pm

1 stop7h 40m

Phoenix Sky Harbor Intl

Thu 1/8

11:55 pm-8:50 am

1 stop7h 55m

$237

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 11/8

7:30 pm-10:20 pm

Nonstop3h 50m

Phoenix Sky Harbor Intl

Sat 11/15

7:05 am-11:20 am

Nonstop3h 15m

$237

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 11/8

3:00 pm-9:02 pm

1 stop7h 02m

Phoenix Sky Harbor Intl

Fri 11/14

12:59 am-9:01 am

1 stop7h 02m

$237

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 1/7

6:00 am-12:25 pm

1 stop7h 25m

Phoenix Sky Harbor Intl

Sat 1/10

11:55 pm-8:50 am

1 stop7h 55m

$237

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/17

11:00 am-5:49 pm

1 stop7h 49m

Phoenix Sky Harbor Intl

Tue 12/23

12:59 am-9:25 am

1 stop7h 26m

$237

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/17

3:50 pm-9:23 pm

1 stop6h 33m

Phoenix Sky Harbor Intl

Tue 12/30

12:59 am-9:25 am

1 stop7h 26m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Mesa

Have a flexible travel schedule? Discover the best time to fly to Mesa from Illinois 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 Illinois to Mesa

What is the cheapest month to book a flight from Illinois to Mesa?

Currently, April is the cheapest month in which you can book a flight from Illinois to Mesa (average of $59). Flying from Illinois to Mesa in March is currently the most expensive (average of $139). 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 MS9?

Find hourly flight availability from Illinois to Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

One of the essential ways to save on airfare from Illinois to Mesa is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 34% on airfare.

What is the cheapest day to fly from Illinois to Mesa?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Mesa. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Mesa flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Illinois to Mesa

Explore weekly flight availability from Illinois to Mesa. 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 October 14, 2025.

The most flights from USIL to MS9 are scheduled on a Monday (50 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Mesa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Illinois to Mesa?

    There are many flights that can get you from Illinois to Mesa in 4h. Fly via United Airlines, Alaska Airlines, or Southwest to get the fastest option. The distance from Illinois to Mesa is about 1436 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Illinois to Mesa one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $70. Users have also found prices from $85 and $98 on Frontier and Alaska Airlines, respectively.

  • What are the most popular routes from Illinois to Mesa?

    While some choose either Chicago Midway - Phoenix Sky Harbor Intl or Lambert-St Louis - Phoenix Sky Harbor Intl, Chicago O'Hare Intl - Phoenix Sky Harbor Intl is the most popular route from Illinois to Mesa.

  • What are the most reliable airlines from Illinois to Mesa?

    Before booking your flight to Mesa from Illinois, check out the most reliable airlines to get you to your destination on time: Air Canada (87%), United Airlines (87%), Brussels Airlines( 83%).

  • What are the cheapest flights from Illinois to Mesa?

    On average you can expect to pay $736 for a flight from Illinois to Mesa. The cheapest flight overall is $92 while the most popular route, (Chicago O'Hare Intl - Phoenix Sky Harbor Intl) is currently priced at $110.

  • Can I find deals for flights from Illinois to Mesa that include hotel bookings?

    Yes. In addition to deals on Illinois to Mesa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Mesa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Mesa.

  • Can I find deals for business class flights from Illinois to Mesa?

    Yes. Cheapflights offers flight deals from Illinois to Mesa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Mesa?

    Currently, April is the cheapest month in which you can book a flight from Illinois to Mesa (average of $59). Flying from Illinois to Mesa in March is currently the most expensive (average of $139). 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.

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Alternative routes for Illinois to Mesa

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Top 8 airlines flying from Illinois to Mesa

Discover the top 8 airlines that operate flights from Illinois to Mesa. 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$204FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$219FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$115Average$256FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$154Average$216FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$184Average$392FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$474FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$206Average$366FlexibilityNo cancel feeOn-time63%
DeltaCheapest$236Average$341FlexibilityNo cancel feeOn-timeN/A

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