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$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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Round-trip from

$136
(Cheapflightsfares)

One-way from

$81
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$264
From Mesa to Illinois
Search Deals
One-way flight from Mesa to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/267:00 amPHX - ORD
Nonstop3h 29mFrontier
Fri 5/28:37 pmORD - PHX
Nonstop4h 15mFrontier
Deal found 3/30$136
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/215:46 pmPHX - ORD
1 stop12h 49mMultiple Airlines
Sat 4/261:34 pmORD - PHX
Nonstop4h 10mMultiple Airlines
Deal found 3/30$141
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/242:34 pmPHX - ORD
1 stop13h 59mSpirit Airlines
Mon 4/287:41 amORD - PHX
1 stop7h 47mSpirit Airlines
Deal found 3/30$147
This Frontier deal was found by Cheapflights users on 3/30. 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.
Mon 4/2110:16 amPHX - MDW
Nonstop3h 25mFrontier
Tue 4/2912:19 pmMDW - PHX
Nonstop3h 57mFrontier
Deal found 3/30$153
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/281:04 amPHX - ORD
Nonstop3h 26mAmerican Airlines
Tue 4/298:35 amORD - PHX
Nonstop3h 56mAmerican Airlines
Deal found 3/31$174
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Sat 5/1011:05 amPHX - ORD
Nonstop3h 35mUnited Airlines
Sat 5/179:25 amORD - PHX
Nonstop4h 06mUnited Airlines
Deal found 3/30$179
This Southwest deal was found by Cheapflights users on 3/30. 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 5/105:15 amPHX - MDW
Nonstop3h 15mSouthwest
Wed 5/215:35 amMDW - PHX
Nonstop3h 45mSouthwest
Deal found 3/30$198
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Tue 6/35:00 amPHX - PIA
1 stop8h 48mAmerican Airlines
Sat 6/76:26 pmPIA - PHX
1 stop7h 33mAmerican Airlines
Deal found 3/30$209
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 8/1310:25 amPHX - MLI
1 stop8h 11mAmerican Airlines
Sun 8/174:34 pmMLI - PHX
1 stop9h 07mAmerican Airlines
Deal found 3/30$239
This Sun Country Air deal was found by Cheapflights users on 3/30. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:54 amPHX - ORD
1 stop22h 06mSun Country Air
Mon 9/1511:49 amORD - PHX
1 stop25h 27mSun Country Air
Deal found 3/30$245
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/612:45 amPHX - ORD
1 stop5h 39mDelta
Mon 5/125:40 pmORD - PHX
1 stop8h 06mDelta
Deal found 3/30$247
This Frontier deal was found by Cheapflights users on 3/30. 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.
Fri 4/188:57 pmPHX - STL
1 stop10h 09mFrontier
Mon 4/216:51 pmSTL - PHX
1 stop7h 06mFrontier
Deal found 3/30$248

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 March 31, 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

Sat 4/26

7:00 am-12:29 pm

Nonstop3h 29m

Chicago O'Hare Intl

Fri 5/2

8:37 pm-10:52 pm

Nonstop4h 15m

$136

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Mon 4/21

5:46 pm-8:35 am

1 stop12h 49m

Chicago O'Hare Intl

Sat 4/26

1:34 pm-3:44 pm

Nonstop4h 10m

$141

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Thu 4/24

2:34 pm-6:33 am

1 stop13h 59m

Chicago O'Hare Intl

Mon 4/28

7:41 am-1:28 pm

1 stop7h 47m

$147

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Mon 4/21

10:16 am-3:41 pm

Nonstop3h 25m

Chicago Midway

Tue 4/29

12:19 pm-2:16 pm

Nonstop3h 57m

$153

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Mon 4/28

1:04 am-6:30 am

Nonstop3h 26m

Chicago O'Hare Intl

Tue 4/29

8:35 am-10:31 am

Nonstop3h 56m

$174

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 5/10

11:05 am-4:40 pm

Nonstop3h 35m

Chicago O'Hare Intl

Sat 5/17

9:25 am-11:31 am

Nonstop4h 06m

$179

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Sat 5/10

5:15 am-10:30 am

Nonstop3h 15m

Chicago Midway

Wed 5/21

5:35 am-7:20 am

Nonstop3h 45m

$198

PhoenixPeoria

PHX - PIA

PHXPIA

Phoenix Sky Harbor Intl

Tue 6/3

5:00 am-3:48 pm

1 stop8h 48m

Greater Peoria

Sat 6/7

6:26 pm-11:59 pm

1 stop7h 33m

$209

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 4/29

6:00 am-6:01 pm

1 stop10h 01m

Chicago O'Hare Intl

Tue 4/29

7:19 pm-8:49 am

1 stop15h 30m

$216

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Wed 8/13

10:25 am-8:36 pm

1 stop8h 11m

Moline Quad-City

Sun 8/17

4:34 pm-11:41 pm

1 stop9h 07m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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.

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 $323). 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 March 31, 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 March 31, 2025.

The most flights from MS9 to USIL are scheduled on a Monday (56 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (12 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 March 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Allegiant Air
7.3
Good
731 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $81. However, be on the lookout for offers from Spirit Airlines and United Airlines, 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 (98%), Cathay Pacific (97%), Brussels Airlines( 95%).

  • What are the cheapest flights from Mesa to Illinois?

    Looking for the cheapest flight from Mesa to Illinois? While on average our users pay $1,469, our data indicates the cheapest price to be $77. The most popular route (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), is priced around $141.

  • 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 $323). 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

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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.
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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$61Average$181FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$73Average$196FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$139Average$240FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$163Average$381FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$167Average$485FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$189Average$396FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$322FlexibilityNo cancel feeOn-timeN/A
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