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O'Hare Intl

$89+ Cheap flights from Mesa, AZ to O'Hare Intl (ORD)

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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Mesa to Chicago O'Hare Intl are usually found in September or January, booked 49 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Mesa to O'Hare Intl

Keep the following information in mind while searching for Mesa to O'Hare Intl flight deals. Data was last updated August 14, 2025.

Round-trip from

$141
(CheapOair)

One-way from

$89
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$266
From Mesa to Chicago O'Hare Intl
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One-way flight from Mesa to Chicago O'Hare Intl
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Highest demand for flights based on searches. 6% potential increase in price ($18 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 August 2025
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Find flight deals from Mesa to O'Hare Intl

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

This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/195:06 pmPHX - ORD
Nonstop3h 34mFrontier
Mon 9/222:07 pmORD - PHX
Nonstop4h 04mFrontier
Deal found 8/14$141
This Gotogate deal was found by Cheapflights users on 8/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/317:25 amPHX - ORD
Nonstop3h 43mFrontier
Sun 9/76:00 amORD - PHX
1 stop6h 01mFrontier
Deal found 8/14$142
This CheapOair deal was found by Cheapflights users on 8/13. 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.
Thu 9/185:06 pmPHX - ORD
Nonstop3h 34mFrontier
Wed 9/247:20 amORD - PHX
1 stop6h 22mFrontier
Deal found 8/13$146
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:06 pmPHX - ORD
Nonstop3h 34mFrontier
Sat 9/68:25 amORD - PHX
1 stop9h 37mFrontier
Deal found 8/13$147
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:20 pmPHX - ORD
1 stop25h 39mFrontier
Mon 9/226:00 amORD - PHX
1 stop6h 14mFrontier
Deal found 8/14$148
This FlightHub deal was found by Cheapflights users on 8/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/171:02 pmPHX - ORD
1 stop20h 46mFrontier
Fri 9/262:07 pmORD - PHX
Nonstop4h 04mFrontier
Deal found 8/14$149
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:14 amPHX - ORD
1 stop12h 28mFrontier
Thu 8/283:20 pmORD - PHX
Nonstop3h 54mFrontier
Deal found 8/14$150
This Cheapflightsfares deal was found by Cheapflights users on 8/11. 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 9/45:06 pmPHX - ORD
Nonstop3h 34mFrontier
Thu 9/112:07 pmORD - PHX
Nonstop4h 04mFrontier
Deal found 8/11$151
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 9/192:46 pmPHX - ORD
1 stop6h 29mFrontier
Wed 9/247:20 amORD - PHX
1 stop6h 22mFrontier
Deal found 8/14$152
This Frontier deal was found by Cheapflights users on 8/12. 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 9/125:06 pmPHX - ORD
Nonstop3h 34mFrontier
Mon 9/152:07 pmORD - PHX
Nonstop4h 04mFrontier
Deal found 8/12$153
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2210:30 amPHX - ORD
Nonstop3h 45mFrontier
Thu 8/2812:42 pmORD - PHX
1 stop12h 00mFrontier
Deal found 8/14$156
This Priceline deal was found by Cheapflights users on 8/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1212:37 pmPHX - ORD
1 stop9h 33mFrontier
Fri 9/1910:42 amORD - PHX
1 stop10h 43mFrontier
Deal found 8/13$157

Cheapflights Fare Finder

 
Customize your flight search to find flights from Mesa to O'Hare Intl 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 14, 2025.
Use the filters below to find and compare flights from Mesa to Chicago O'Hare Intl Airport that are best for you.

Fly from

Mesa

Fly to

O'Hare Intl

Route

Depart

Return

Price

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sun 8/31

7:25 am-1:08 pm

Nonstop3h 43m

Chicago O'Hare Intl

Sat 9/6

8:25 am-4:02 pm

1 stop9h 37m

$141

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 9/26

8:20 pm-9:28 pm

1 stop23h 08m

Chicago O'Hare Intl

Wed 10/1

7:20 am-7:32 am

1 stop26h 12m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 10/1

12:39 pm-9:28 pm

1 stop6h 49m

Chicago O'Hare Intl

Mon 10/6

10:42 am-5:13 pm

1 stop8h 31m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Wed 9/17

8:00 am-9:28 pm

1 stop11h 28m

Chicago O'Hare Intl

Sun 9/21

10:42 am-8:00 am

1 stop23h 18m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 9/26

8:20 pm-9:28 pm

1 stop23h 08m

Chicago O'Hare Intl

Sun 9/28

6:00 am-8:00 am

1 stop28h 00m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sun 10/19

9:59 pm-12:59 am

1 stop25h 00m

Chicago O'Hare Intl

Wed 10/22

7:15 am-11:14 am

1 stop5h 59m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 9/23

12:47 pm-9:28 pm

1 stop6h 41m

Chicago O'Hare Intl

Tue 9/30

7:20 am-9:53 pm

1 stop16h 33m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 9/13

8:00 am-9:28 pm

1 stop11h 28m

Chicago O'Hare Intl

Wed 9/17

7:20 am-11:42 am

1 stop6h 22m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 9/12

6:36 am-11:59 pm

1 stop15h 23m

Chicago O'Hare Intl

Tue 9/16

7:20 am-9:53 pm

1 stop16h 33m

$148

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 9/2

7:14 am-9:42 pm

1 stop12h 28m

Chicago O'Hare Intl

Fri 9/5

10:42 am-11:42 am

1 stop27h 00m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 19 results
1
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Best time to book a flight from Mesa to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 Chicago O'Hare Intl Airport

How far ahead should I book a flight from Mesa to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Mesa to O'Hare Intl. Price data was last updated on August 8, 2025.

The price you pay for your flight from Mesa to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 49 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Mesa to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Mesa to Chicago O'Hare Intl Airport (average of $245). Flying from Mesa to Chicago O'Hare Intl Airport 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 ORD?

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Mesa to Chicago O'Hare Intl Airport as you normally would.

What is the cheapest day to fly from Mesa to Chicago O'Hare Intl Airport?

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

Travelers seeking maximum savings on their Mesa to Chicago O'Hare Intl Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Mesa to Chicago O'Hare Intl Airport

Explore weekly flight availability from Mesa to O'Hare Intl. 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 14, 2025.

The most flights from MS9 to ORD are scheduled on a Thursday (57 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (33 on average).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated August 14, 2025.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from Mesa to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,046 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,217 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Mesa to O'Hare Intl. 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 Chicago O'Hare Intl Airport one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $89. American Airlines flights start at $90 while deals on Frontier start at $91 one-way.

  • What are the most reliable airlines from Mesa to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport from Mesa, check out the most reliable airlines to get you to your destination on time: SWISS (87%), Cathay Pacific (87%), Aer Lingus( 86%).

  • What are the cheapest flights from Mesa to Chicago O'Hare Intl Airport?

    While on average a flight from Mesa to Chicago O'Hare Intl Airport is generally $993, our data shows the cheapest flight currently is $98. When looking at the most popular route, (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), you can expect to pay $116 for that flight.

  • Can I find deals for flights from Mesa to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Mesa to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Mesa to O'Hare Intl?

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

  • Can I find deals for business class flights from Mesa to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Mesa to O'Hare Intl 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 Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Mesa to Chicago O'Hare Intl Airport (average of $245). Flying from Mesa to Chicago O'Hare Intl Airport 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Beloit
Hoffman Estates
Skokie
Des Plaines
Elgin
Gurnee
Arlington Heights
Racine
Rockford
Great Lakes
Orland Park
Merrillville
Naperville
Waukegan
Elk Grove Village
Downers Grove
Tinley Park
Evanston

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Mesa to O'Hare Intl

Discover the top 6 airlines that operate flights from Mesa to O'Hare Intl. 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 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$78Average$197FlexibilityNo cancel feeOn-time65%
FrontierCheapest$89Average$202FlexibilityNo cancel feeOn-time62%
DeltaCheapest$162Average$293FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$182Average$309FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$188Average$336FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$205Average$363FlexibilityNo cancel feeOn-time63%

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