HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$81+ 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 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Mesa to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Mesa to Illinois

Keep the following information in mind while searching for Mesa to Illinois flight deals. Data was last updated August 1, 2025.

Round-trip from

$170
(Frontier)

One-way from

$81
(Southwest)

Popular in

December

Cheapest in

September

Average price

$218
From Mesa to Illinois
Search Deals
One-way flight from Mesa to Illinois
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Mesa to Illinois

Cheapest flights from Mesa to Illinois
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, 2025.

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.
Fri 9/125:06 pmPHX - ORD
Nonstop3h 34mFrontier
Mon 9/152:07 pmORD - PHX
Nonstop4h 04mFrontier
Deal found 8/1$170
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/304:35 pmPHX - MDW
Nonstop3h 26mFrontier
Sun 11/29:56 pmMDW - PHX
Nonstop3h 51mFrontier
Deal found 7/30$174
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:14 pmPHX - ORD
1 stop10h 17mMultiple Airlines
Sun 11/22:34 pmORD - PHX
Nonstop4h 00mMultiple Airlines
Deal found 7/30$181
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:40 amPHX - ORD
Nonstop3h 42mAmerican Airlines
Sat 8/303:22 pmORD - PHX
Nonstop3h 41mAmerican Airlines
Deal found 7/30$188
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.
Wed 8/274:00 pmPHX - ORD
Nonstop3h 30mUnited Airlines
Wed 9/33:50 pmORD - PHX
Nonstop3h 49mUnited Airlines
Deal found 7/30$197
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 10/46:50 pmPHX - MDW
Nonstop3h 15mSouthwest
Tue 10/76:25 amMDW - PHX
Nonstop3h 45mSouthwest
Deal found 7/31$197
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 8/272:15 pmPHX - ORD
1 stop7h 25mSouthwest
Wed 9/173:00 pmORD - PHX
Nonstop3h 50mSouthwest
Deal found 7/31$207
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.
Fri 10/316:35 pmPHX - ORD
1 stop9h 47mAlaska Airlines
Sun 11/22:54 pmORD - PHX
1 stop9h 22mAlaska Airlines
Deal found 7/31$215
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:59 pmPHX - RFD
2 stops13h 26mMultiple Airlines
Mon 9/1510:37 amRFD - PHX
2 stops13h 27mMultiple Airlines
Deal found 7/30$234
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.
Thu 9/410:19 amPHX - MDW
1 stop9h 07mDelta
Sat 9/134:31 pmMDW - PHX
1 stop7h 41mDelta
Deal found 7/31$237
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2410:42 pmPHX - STL
1 stop12h 50mSpirit Airlines
Thu 8/282:30 pmSTL - PHX
1 stop9h 07mSpirit Airlines
Deal found 7/29$238
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.
Thu 10/235:15 pmPHX - STL
1 stop5h 09mDelta
Sat 10/256:00 amSTL - PHX
1 stop6h 40mDelta
Deal found 7/31$244

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, 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 - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 9/12

5:06 pm-10:40 pm

Nonstop3h 34m

Chicago O'Hare Intl

Mon 9/15

2:07 pm-4:11 pm

Nonstop4h 04m

$170

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Thu 10/30

4:35 pm-10:01 pm

Nonstop3h 26m

Chicago Midway

Sun 11/2

9:56 pm-12:47 am

Nonstop3h 51m

$174

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Thu 10/30

12:14 pm-12:31 am

1 stop10h 17m

Chicago O'Hare Intl

Sun 11/2

2:34 pm-5:34 pm

Nonstop4h 00m

$181

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 8/23

10:19 am-3:54 pm

Nonstop3h 35m

Chicago O'Hare Intl

Sat 8/30

6:55 pm-8:49 pm

Nonstop3h 54m

$186

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 8/27

4:00 pm-9:30 pm

Nonstop3h 30m

Chicago O'Hare Intl

Wed 9/3

3:50 pm-5:39 pm

Nonstop3h 49m

$197

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Sat 10/4

6:50 pm-12:05 am

Nonstop3h 15m

Chicago Midway

Tue 10/7

6:25 am-8:10 am

Nonstop3h 45m

$197

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 8/27

2:15 pm-11:40 pm

1 stop7h 25m

Chicago O'Hare Intl

Wed 9/17

3:00 pm-4:50 pm

Nonstop3h 50m

$207

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 9/10

12:00 pm-12:03 am

1 stop10h 03m

Chicago O'Hare Intl

Tue 9/16

6:20 am-12:54 pm

1 stop8h 34m

$216

PhoenixChicago

PHX - RFD

PHXRFD

Phoenix Sky Harbor Intl

Thu 9/11

10:59 pm-2:25 pm

2 stops13h 26m

Chicago Greater Rockford

Mon 9/15

10:37 am-10:04 pm

2 stops13h 27m

$234

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Thu 9/4

10:19 am-9:26 pm

1 stop9h 07m

Chicago Midway

Sat 9/13

4:31 pm-10:12 pm

1 stop7h 41m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 60 results
1
2
3
...
6

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, August is the cheapest month in which you can book a flight from Mesa to Illinois (average of $245). Flying from Mesa to Illinois in March is currently the most expensive (average of $321). 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 August 1, 2025.

When flying from Mesa to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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, 2025.

The most flights from MS9 to USIL are scheduled on a Thursday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 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 August 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,983 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,613 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,904 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $81. However, be on the lookout for offers from Spirit Airlines and Frontier, as they are both options that can get you from Mesa to Illinois for a low price.

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

    Most travelers choose Phoenix Sky Harbor Intl - Chicago O'Hare Intl, Phoenix Sky Harbor Intl - Chicago Midway or Phoenix Sky Harbor Intl - Lambert-St Louis when deciding on the best route from Mesa to Illinois.

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

    Before booking your flight to Illinois from Mesa, check out the most reliable airlines to get you to your destination on time: Cathay Pacific (90%), SWISS (88%), Brussels Airlines( 87%).

  • What are the cheapest flights from Mesa to Illinois?

    Looking for the cheapest flight from Mesa to Illinois? While on average our users pay $1,405, our data indicates the cheapest price to be $99. The most popular route (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), is priced around $168.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Mesa to Illinois 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 Mesa to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Mesa to Illinois (average of $245). Flying from Mesa to Illinois in March is currently the most expensive (average of $321). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Mesa to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Sky Harbor Intl to Seattle flights
Sky Harbor Intl to O'Hare Intl flights
Sky Harbor Intl to John F Kennedy Intl flights
Sky Harbor Intl to Dallas/Fort Worth flights
Sky Harbor Intl to Newark flights
Sky Harbor Intl to Las Vegas flights
Sky Harbor Intl to Boston flights
Sky Harbor Intl to Denver flights
Sky Harbor Intl to San Francisco flights
Sky Harbor Intl to Los Angeles flights
Las Vegas to John F Kennedy Intl flights
Sky Harbor Intl to Honolulu flights
Las Vegas to Honolulu flights
Sky Harbor Intl to LaGuardia flights
Las Vegas to Seattle flights
Sky Harbor Intl to Orlando flights
Sky Harbor Intl to Salt Lake City flights
Sky Harbor Intl to Atlanta flights
Sky Harbor Intl to Minneapolis flights
Las Vegas to Denver flights
Las Vegas to O'Hare Intl flights
Sky Harbor Intl to Portland flights
Sky Harbor Intl to Everett flights
Las Vegas to Los Angeles flights
Sky Harbor Intl to Miami flights
Sky Harbor Intl to Midway flights
Las Vegas to Boston flights
Las Vegas to Burbank flights
Las Vegas to Santa Ana flights
Sky Harbor Intl to Hobby flights
Sky Harbor Intl to Love Field flights
Sky Harbor Intl to Kahului flights
Tucson to Denver flights
Sky Harbor Intl to San Diego flights
Las Vegas to LaGuardia flights
Sky Harbor Intl to Detroit flights
Sky Harbor Intl to Nashville flights
Sky Harbor Intl to Dulles Intl flights
Sky Harbor Intl to Philadelphia flights
Las Vegas to Newark flights
Tucson to Las Vegas flights
Las Vegas to Orlando flights
Sky Harbor Intl to George Bush Intcntl flights
Las Vegas to Detroit flights
Sky Harbor Intl to New Orleans flights
Sky Harbor Intl to Baltimore flights
Sky Harbor Intl to Fort Lauderdale flights
Sky Harbor Intl to Reno flights
Sky Harbor Intl to Milwaukee flights
Sky Harbor Intl to Tampa flights

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, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$79Average$200FlexibilityNo cancel feeOn-time65%
FrontierCheapest$87Average$210FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$128Average$218FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$149Average$328FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$173Average$478FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$199Average$349FlexibilityNo cancel feeOn-time63%
DeltaCheapest$240Average$293FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.