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$33+ Cheap flights from Illinois to Arizona

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Illinois to Arizona

Keep the following information in mind while searching for Illinois to Arizona flight deals. Data was last updated September 11, 2025.

Round-trip from

$134
(Kiwi.com)

One-way from

$33
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$199

Good round-trip deal

$136 or less

Good one-way deal

$80 or less
From Illinois to Arizona
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One-way flight from Illinois to Arizona
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Highest demand for flights based on searches. 6% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Arizona.
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Price to beat on a one-way flight from Illinois to Arizona.
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Find flight deals from Illinois to Arizona

Cheapest flights from Illinois to Arizona
Explore the most affordable flight options available from Illinois to Arizona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/136:35 amORD - LAS
Nonstop3h 54mMultiple Airlines
Fri 10/172:54 pmLAS - ORD
Nonstop4h 00mMultiple Airlines
Deal found 9/8$134
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/111:15 amORD - LAS
Nonstop4h 01mSpirit Airlines
Wed 10/83:00 pmLAS - ORD
Nonstop3h 48mSpirit Airlines
Deal found 9/10$135
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/297:03 pmMDW - LAS
Nonstop3h 45mMultiple Airlines
Tue 10/711:54 amLAS - MDW
1 stop9h 26mMultiple Airlines
Deal found 9/9$135
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sun 9/216:00 amORD - LAS
1 stop12h 09mMultiple Airlines
Thu 9/256:15 amLAS - ORD
Nonstop3h 36mMultiple Airlines
Deal found 9/10$136
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/127:20 amORD - LAS
1 stop7h 53mMultiple Airlines
Sun 11/1612:50 amLAS - ORD
Nonstop3h 35mMultiple Airlines
Deal found 9/9$137
This Frontier deal was found by Cheapflights users on 9/9. 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 11/1410:43 pmORD - LAS
Nonstop4h 01mFrontier
Mon 11/173:45 pmLAS - ORD
Nonstop3h 58mFrontier
Deal found 9/9$138
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Wed 9/2410:27 amORD - LAS
1 stop13h 23mSpirit Airlines
Fri 9/2611:19 amLAS - ORD
Nonstop3h 40mSpirit Airlines
Deal found 9/11$139
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/411:23 amMDW - LAS
1 stop14h 27mFrontier
Sat 10/1111:20 amLAS - MDW
1 stop10h 00mFrontier
Deal found 9/9$139
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:30 pmORD - LAS
Nonstop4h 05mMultiple Airlines
Wed 11/1211:02 pmLAS - ORD
1 stop11h 24mMultiple Airlines
Deal found 9/11$140
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/32:26 pmMDW - LAS
1 stop7h 27mMultiple Airlines
Tue 10/79:30 amLAS - MDW
1 stop11h 50mMultiple Airlines
Deal found 9/10$140
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/249:54 pmORD - LAS
Nonstop4h 05mMultiple Airlines
Wed 10/2910:21 amLAS - ORD
1 stop6h 38mMultiple Airlines
Deal found 9/10$141
This Southwest deal was found by Cheapflights users on 9/10. 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.
Fri 10/311:30 pmMDW - PHX
1 stop5h 05mSouthwest
Wed 11/56:40 pmPHX - MDW
Nonstop3h 15mSouthwest
Deal found 9/10$142

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Arizona 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 September 11, 2025.
Use the filters below to find and compare flights from Illinois to Arizona that are best for you.

Fly from

Illinois

Fly to

Arizona

Route

Depart

Return

Price

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Tue 10/7

6:25 am-8:10 am

Nonstop3h 45m

Phoenix Sky Harbor Intl

Tue 10/14

6:50 pm-12:05 am

Nonstop3h 15m

$146

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 11/11

7:15 am-9:20 am

Nonstop4h 05m

Las Vegas Harry Reid Intl

Thu 11/13

4:55 pm-10:35 pm

Nonstop3h 40m

$147

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Wed 11/5

7:15 am-9:20 am

Nonstop4h 05m

Las Vegas Harry Reid Intl

Wed 11/19

4:55 pm-10:35 pm

Nonstop3h 40m

$147

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Wed 12/10

5:15 am-7:10 am

Nonstop3h 55m

Las Vegas Harry Reid Intl

Fri 12/12

11:40 pm-5:05 am

Nonstop3h 25m

$147

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 11/8

7:39 pm-10:41 pm

Nonstop4h 02m

Phoenix Sky Harbor Intl

Tue 11/11

7:03 pm-11:30 pm

Nonstop3h 27m

$149

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Tue 11/11

5:25 am-8:15 am

Nonstop3h 50m

Phoenix Sky Harbor Intl

Tue 11/18

5:00 am-9:15 am

Nonstop3h 15m

$149

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 10/5

1:44 pm-3:32 pm

Nonstop3h 48m

Las Vegas Harry Reid Intl

Thu 10/9

7:30 am-12:54 pm

Nonstop3h 24m

$153

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Mon 11/24

3:40 pm-5:35 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Thu 11/27

11:40 pm-5:05 am

Nonstop3h 25m

$153

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Wed 12/10

1:59 pm-4:31 pm

Nonstop3h 32m

Phoenix-Mesa Gateway

Fri 12/12

1:57 pm-6:06 pm

Nonstop3h 09m

$156

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Fri 10/3

8:55 pm-10:26 pm

Nonstop3h 31m

Phoenix-Mesa Gateway

Sat 10/11

7:00 am-12:10 pm

Nonstop3h 10m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

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

Have a flexible travel schedule? Discover the best time to fly to Arizona 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 Arizona

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Arizona (average of $258). Flying from Illinois to Arizona in March is currently the most expensive (average of $337). 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 AZ?

Find hourly flight availability from Illinois to Arizona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Arizona as you normally would.

Weekly flight availability from Illinois to Arizona

Explore weekly flight availability from Illinois to Arizona. 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 September 11, 2025.

The most flights from USIL to USAZ are scheduled on a Monday (49 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 Arizona

Get insights into the airlines that provide service to Arizona. 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 Arizona. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Illinois to Arizona, such as Southwest, United Airlines, and American Airlines. 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
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Allegiant Air
7.2
Good
702 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Illinois to Arizona. 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 Arizona?

    Departing from Illinois to Arizona will take you 3h 45m. Illinois and Arizona are separated by a distance of 1440 mi. Generally, flights for this route are nonstop.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $34. Southwest flights start at $65 while deals on United Airlines start at $75 one-way.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Arizona (average of $258). Flying from Illinois to Arizona in March is currently the most expensive (average of $337). 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 Illinois to Arizona

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Illinois to Arizona

Discover the top 8 airlines that operate flights from Illinois to Arizona. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$200FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$95Average$219FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$114Average$270FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$154Average$212FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$186Average$498FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$187Average$412FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$206Average$399FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$349FlexibilityNo cancel feeOn-timeN/A

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