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$55+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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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 February 22, 2025.

Round-trip from

$120
(Cheapflightsfares)

One-way from

$55
(Frontier)

Popular in

December

Cheapest in

April

Average price

$219
From Mesa to Illinois
Search Deals
One-way flight from Mesa to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 22, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:15 amPHX - ORD
1 stop5h 38mMultiple Airlines
Wed 4/24:26 pmORD - PHX
Nonstop4h 08mMultiple Airlines
Deal found 2/21$120
This Cheapflightsfares deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/211:12 amPHX - ORD
Nonstop3h 32mFrontier
Sun 4/64:26 pmORD - PHX
Nonstop4h 08mFrontier
Deal found 2/21$126
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/88:02 pmPHX - ORD
1 stop10h 19mSpirit Airlines
Tue 3/119:16 amORD - PHX
1 stop10h 51mSpirit Airlines
Deal found 2/20$132
This Cheapflightsfares deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/410:16 amPHX - MDW
Nonstop3h 25mFrontier
Tue 4/87:25 amMDW - PHX
Nonstop3h 56mFrontier
Deal found 2/21$136
This Mytrip deal was found by Cheapflights users on 2/21. 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 3/137:52 amPHX - STL
1 stop7h 53mFrontier
Mon 3/176:55 pmSTL - PHX
1 stop28h 33mFrontier
Deal found 2/21$158
This Trip.com deal was found by Cheapflights users on 2/21. 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.
Thu 3/611:15 amPHX - MDW
Nonstop3h 19mMultiple Airlines
Tue 3/117:50 amMDW - PHX
1 stop12h 17mMultiple Airlines
Deal found 2/21$159
This Delta deal was found by Cheapflights users on 2/22. 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 4/811:00 amPHX - ORD
1 stop10h 59mDelta
Tue 4/152:15 pmORD - PHX
1 stop8h 22mDelta
Deal found 2/22$203
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 4/812:28 pmPHX - MLI
1 stop7h 21mAmerican Airlines
Wed 4/166:30 pmMLI - PHX
1 stop6h 26mAmerican Airlines
Deal found 2/21$209
This American Airlines deal was found by Cheapflights users on 2/20. 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 4/26:45 amPHX - ORD
Nonstop3h 29mAmerican Airlines
Wed 4/21:20 pmORD - PHX
Nonstop4h 04mAmerican Airlines
Deal found 2/20$212
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Mon 4/712:45 amPHX - ORD
Nonstop3h 27mUnited Airlines
Tue 4/1511:05 amORD - PHX
Nonstop4h 04mUnited Airlines
Deal found 2/21$217
This Delta deal was found by Cheapflights users on 2/21. 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 4/211:00 pmPHX - MDW
1 stop7h 43mDelta
Tue 4/84:59 pmMDW - PHX
1 stop7h 34mDelta
Deal found 2/21$237
This Expedia deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/38:57 pmPHX - STL
1 stop10h 09mMultiple Airlines
Tue 4/83:11 pmSTL - PHX
1 stop11h 01mMultiple Airlines
Deal found 2/21$257

Find flights from Mesa to Illinois within your budget

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 February 22, 2025.

Fly from

Mesa

Fly to

Illinois

Route

Depart

Return

Price

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 3/26

5:15 am-12:53 pm

1 stop5h 38m

Chicago O'Hare Intl

Wed 4/2

4:26 pm-6:34 pm

Nonstop4h 08m

$120

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 4/2

11:12 am-4:44 pm

Nonstop3h 32m

Chicago O'Hare Intl

Sun 4/6

4:26 pm-6:34 pm

Nonstop4h 08m

$126

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 3/8

8:02 pm-7:21 am

1 stop10h 19m

Chicago O'Hare Intl

Tue 3/11

9:16 am-6:07 pm

1 stop10h 51m

$132

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Fri 4/4

10:16 am-3:41 pm

Nonstop3h 25m

Chicago Midway

Tue 4/8

7:25 am-9:21 am

Nonstop3h 56m

$136

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 3/13

7:52 am-5:45 pm

1 stop7h 53m

Lambert-St Louis

Mon 3/17

6:55 pm-9:28 pm

1 stop28h 33m

$158

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Thu 3/6

11:15 am-3:34 pm

Nonstop3h 19m

Chicago Midway

Tue 3/11

7:50 am-6:07 pm

1 stop12h 17m

$159

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 4/8

11:00 am-11:59 pm

1 stop10h 59m

Chicago O'Hare Intl

Tue 4/15

2:15 pm-8:37 pm

1 stop8h 22m

$203

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Tue 4/8

12:28 pm-9:49 pm

1 stop7h 21m

Moline Quad-City

Wed 4/16

6:30 pm-10:56 pm

1 stop6h 26m

$209

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 4/2

6:45 am-12:14 pm

Nonstop3h 29m

Chicago O'Hare Intl

Wed 4/2

1:20 pm-3:24 pm

Nonstop4h 04m

$212

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Mon 4/7

12:45 am-6:12 am

Nonstop3h 27m

Chicago O'Hare Intl

Tue 4/15

11:05 am-1:09 pm

Nonstop4h 04m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 60 results
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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.

Travel insights for flights from Mesa to Illinois

Get recent, data-driven insights about flights from Mesa to Illinois including ideal travel times, pricing trends, and more.

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 February 22, 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 February 22, 2025.

The most flights from MS9 to USIL are scheduled on a Thursday (47 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (39 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 22, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Mesa to Illinois. 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.
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Allegiant Air
7.3
Good
764 reviews
Southwest
8.1
Very good
4,396 reviews

Crew

8.7

Entertainment

7.6

Food

7.1

Boarding

8.2

Overall

8.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 Frontier, with whom users have recently found tickets for as low as $55. However, be on the lookout for offers from Spirit Airlines and Delta, 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: Japan Airlines (97%), Emirates (97%), Brussels Airlines( 97%).

  • What are the cheapest flights from Mesa to Illinois?

    Looking for the cheapest flight from Mesa to Illinois? While on average our users pay $1,082, our data indicates the cheapest price to be $70. The most popular route (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), is priced around $83.

  • 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.

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Alternative routes for Mesa to Illinois

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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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$60Average$166FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$65Average$194FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$144Average$252FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$163Average$492FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$163Average$422FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$185Average$380FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$332FlexibilityNo cancel feeOn-timeN/A
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