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$49+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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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 November 2, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/122:26 pmORD - LAS
1 stop21h 17mFrontier
Sun 12/146:00 amLAS - ORD
Nonstop3h 42mFrontier
Deal found 11/1$133
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Sun 12/145:13 pmORD - LAS
1 stop8h 16mFrontier
Mon 12/156:30 amLAS - ORD
1 stop11h 47mFrontier
Deal found 11/2$134
This CheapOair deal was found by Cheapflights users on 11/2. 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.
Sun 12/72:01 pmMDW - LAS
1 stop10h 34mFrontier
Wed 12/101:16 amLAS - MDW
1 stop10h 48mFrontier
Deal found 11/2$134
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:45 pmORD - LAS
Nonstop4h 23mFrontier
Fri 12/57:51 pmLAS - ORD
2 stops14h 03mFrontier
Deal found 11/1$135
This Booking.com deal was found by Cheapflights users on 10/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:20 pmRFD - LAS
Nonstop3h 41mAllegiant Air
Thu 12/117:10 amLAS - RFD
Nonstop3h 20mAllegiant Air
Deal found 10/31$135
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/244:58 pmORD - LAS
Nonstop4h 06mSpirit Airlines
Mon 11/2411:59 pmLAS - ORD
Nonstop3h 33mSpirit Airlines
Deal found 11/2$136
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:05 amORD - LAS
2 stops11h 57mFrontier
Sun 12/76:00 amLAS - ORD
Nonstop3h 42mFrontier
Deal found 11/1$137
This CheapOair deal was found by Cheapflights users on 10/31. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:36 amMDW - LAS
1 stop24h 31mFrontier
Wed 11/193:59 pmLAS - MDW
1 stop22h 31mFrontier
Deal found 10/31$137
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:05 amORD - LAS
2 stops11h 57mFrontier
Mon 12/86:00 amLAS - ORD
Nonstop3h 42mFrontier
Deal found 11/1$138
This CheapOair deal was found by Cheapflights users on 11/2. 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.
Mon 12/812:18 pmMDW - LAS
1 stop8h 28mFrontier
Thu 12/1112:52 pmLAS - MDW
1 stop7h 20mFrontier
Deal found 11/2$138
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/1610:43 pmORD - LAS
Nonstop4h 01mMultiple Airlines
Mon 11/2411:59 pmLAS - ORD
Nonstop3h 33mMultiple Airlines
Deal found 11/2$139
This Mytrip deal was found by Cheapflights users on 11/2. 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.
Sun 11/304:58 pmORD - LAS
Nonstop4h 06mMultiple Airlines
Wed 12/37:24 pmLAS - ORD
1 stop26h 48mMultiple Airlines
Deal found 11/2$140

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 November 2, 2025.

Round-trip from

$133
(Cheapflightsfares)

One-way from

$49
(Frontier)

Popular in

March

Cheapest in

August

Average price

$303

Good round-trip deal

$153 or less

Good one-way deal

$114 or less
From Illinois to Arizona
Search Deals
One-way flight from Illinois to Arizona
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Arizona.
Search Deals
Price to beat on a one-way flight from Illinois to Arizona.
Search Deals

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 November 2, 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

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sat 11/29

12:27 pm-2:12 pm

Nonstop3h 45m

Las Vegas Harry Reid Intl

Thu 12/4

7:10 am-12:30 pm

Nonstop3h 20m

$147

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 1/23

9:05 pm-11:19 pm

Nonstop4h 14m

Las Vegas Harry Reid Intl

Fri 1/30

5:14 pm-10:58 pm

Nonstop3h 44m

$149

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 1/23

9:05 pm-11:19 pm

Nonstop4h 14m

Las Vegas Harry Reid Intl

Sun 1/25

12:30 am-6:08 am

Nonstop3h 38m

$149

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Thu 12/18

12:45 pm-2:26 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Tue 12/23

6:05 am-11:25 am

Nonstop3h 20m

$163

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

$170

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Fri 11/21

12:05 pm-2:38 pm

Nonstop3h 33m

Phoenix-Mesa Gateway

Fri 1/9

1:21 pm-5:26 pm

Nonstop3h 05m

$172

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 12/1

7:32 pm-10:05 pm

Nonstop3h 33m

Phoenix-Mesa Gateway

Wed 12/3

9:00 am-1:09 pm

Nonstop3h 09m

$181

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 12/21

12:45 pm-2:26 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Tue 12/30

6:05 am-11:25 am

Nonstop3h 20m

$185

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Thu 1/15

1:24 pm-3:16 pm

Nonstop3h 52m

Las Vegas Harry Reid Intl

Sun 1/18

7:10 am-12:34 pm

Nonstop3h 24m

$185

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Wed 11/19

2:05 pm-4:38 pm

Nonstop3h 33m

Phoenix-Mesa Gateway

Fri 11/21

7:10 am-11:15 am

Nonstop3h 05m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

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, April is the cheapest month in which you can book a flight from Illinois to Arizona (average of $59). Flying from Illinois to Arizona in March is currently the most expensive (average of $137). 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 November 2, 2025.

One of the essential ways to save on airfare from Illinois to Arizona is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 24% on airfare.

What is the cheapest day to fly from Illinois to Arizona?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Arizona. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to Arizona flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 2, 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
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
8,993 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
11,032 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
694 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
3,119 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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 1451 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $66. Allegiant Air flights start at $67 while deals on Frontier start at $70 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, April is the cheapest month in which you can book a flight from Illinois to Arizona (average of $59). Flying from Illinois to Arizona in March is currently the most expensive (average of $137). 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

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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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$207FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$220FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$116Average$266FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$154Average$231FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$183Average$412FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$193Average$493FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$206Average$400FlexibilityNo cancel feeOn-time63%
DeltaCheapest$236Average$341FlexibilityNo cancel feeOn-timeN/A

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