HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Arizona

$66+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Arizona with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 17, 2025.

Round-trip from

$124
(Booking.com)

One-way from

$66
(Cheapflightsfares)

Popular in

March

Cheapest in

September

Average price

$267

Good round-trip deal

$148 or less

Good one-way deal

$55 or less
From Illinois to Arizona
Search Deals
One-way flight from Illinois to Arizona
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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

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 April 17, 2025.

This Booking.com deal was found by Cheapflights users on 4/16. 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.
Thu 5/19:36 pmRFD - LAS
Nonstop3h 41mAllegiant Air
Thu 5/156:15 amLAS - RFD
Nonstop3h 23mAllegiant Air
Deal found 4/16$124
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 5/119:02 pmORD - LAS
Nonstop4h 05mSpirit Airlines
Tue 5/1312:42 pmLAS - ORD
1 stop16h 00mSpirit Airlines
Deal found 4/16$128
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
Tue 5/209:02 pmORD - LAS
Nonstop4h 05mMultiple Airlines
Fri 5/233:03 pmLAS - ORD
Nonstop3h 50mMultiple Airlines
Deal found 4/16$134
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/46:15 amMDW - LAS
Nonstop4h 03mFrontier
Fri 5/99:13 amLAS - MDW
Nonstop3h 35mFrontier
Deal found 4/16$134
This Gotogate deal was found by Cheapflights users on 4/17. 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.
Mon 5/1912:44 pmPIA - LAS
Nonstop3h 39mAllegiant Air
Wed 5/212:38 pmLAS - PIA
Nonstop3h 19mAllegiant Air
Deal found 4/17$142
This Frontier deal was found by Cheapflights users on 4/17. 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.
Thu 4/249:55 pmSTL - LAS
Nonstop3h 44mFrontier
Thu 5/13:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 4/17$142
This FlightHub deal was found by Cheapflights users on 4/16. 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.
Tue 5/272:40 pmSTL - LAS
Nonstop3h 44mMultiple Airlines
Sat 5/319:24 pmLAS - STL
1 stop9h 51mMultiple Airlines
Deal found 4/16$169
This FlightHub deal was found by Cheapflights users on 4/17. 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.
Thu 6/59:02 pmORD - PHX
1 stop13h 11mMultiple Airlines
Mon 6/96:15 pmPHX - ORD
Nonstop3h 32mMultiple Airlines
Deal found 4/17$171
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 5/188:14 pmORD - LAS
Nonstop4h 16mFrontier
Tue 5/2712:59 amLAS - ORD
1 stop20h 53mFrontier
Deal found 4/17$172
This Trip.com deal was found by Cheapflights users on 4/16. 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 5/83:25 pmMDW - PHX
Nonstop3h 55mFrontier
Sun 5/118:00 amPHX - MDW
Nonstop3h 25mFrontier
Deal found 4/16$173
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 5/117:35 amORD - PHX
Nonstop4h 07mFrontier
Wed 5/143:11 pmPHX - ORD
1 stop30h 21mFrontier
Deal found 4/17$174
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/18:00 amORD - PHX
1 stop7h 28mSpirit Airlines
Mon 5/55:46 pmPHX - ORD
1 stop12h 49mSpirit Airlines
Deal found 4/16$175

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 April 17, 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

Thu 5/1

9:36 pm-11:17 pm

Nonstop3h 41m

Las Vegas Harry Reid Intl

Thu 5/15

6:15 am-11:38 am

Nonstop3h 23m

$124

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Mon 5/12

8:14 pm-10:30 pm

Nonstop4h 16m

Las Vegas Harry Reid Intl

Wed 5/21

1:00 pm-6:50 pm

Nonstop3h 50m

$132

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Sun 5/4

6:15 am-8:18 am

Nonstop4h 03m

Las Vegas Harry Reid Intl

Fri 5/9

9:13 am-2:48 pm

Nonstop3h 35m

$134

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Wed 5/7

9:02 pm-11:07 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Sat 5/10

12:42 pm-6:42 am

1 stop16h 00m

$135

PeoriaLas Vegas

PIA - LAS

PIALAS

Greater Peoria

Mon 5/12

12:40 pm-2:26 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Fri 5/16

6:35 am-11:54 am

Nonstop3h 19m

$142

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 4/24

9:55 pm-11:39 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

Thu 5/1

3:39 pm-9:05 pm

Nonstop3h 26m

$142

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 5/16

9:02 pm-11:07 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Wed 5/21

1:00 pm-6:50 pm

Nonstop3h 50m

$151

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Tue 5/27

2:40 pm-4:24 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

Sat 5/31

9:24 pm-9:15 am

1 stop9h 51m

$169

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Thu 6/5

9:02 pm-8:13 am

1 stop13h 11m

Phoenix Sky Harbor Intl

Mon 6/9

6:15 pm-11:47 pm

Nonstop3h 32m

$171

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Thu 5/8

3:25 pm-5:20 pm

Nonstop3h 55m

Phoenix Sky Harbor Intl

Sun 5/11

8:00 am-1:25 pm

Nonstop3h 25m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 60 results
1
2
3
...
6

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 April 17, 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 April 17, 2025.

The most flights from USIL to USAZ are scheduled on a Thursday (55 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in Arizona by month

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

In terms of precipitation, rainfall in Arizona ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Arizona when rainfall is around 0.0 in.

Temperature in Arizona by month

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

If weather is an important factor for your trip to Arizona, 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 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 April 17, 2025.
To help decide which airline to fly from Illinois to Arizona, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,385 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • 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 $66. Allegiant Air flights start at $67 while deals on Spirit Airlines start at $68 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Arizona

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Fort Lauderdale flights
Newark to Orlando flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
LaGuardia to Miami flights
San Francisco to John F Kennedy Intl flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Miami flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to Newark flights
Dallas/Fort Worth to Seattle flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to Dallas/Fort Worth flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to O'Hare Intl flights
LaGuardia to O'Hare Intl flights
Dallas/Fort Worth to LaGuardia flights
Newark to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
O'Hare Intl to Las Vegas flights
O'Hare Intl to Dallas/Fort Worth flights
Los Angeles to Honolulu flights
John F Kennedy Intl to Orlando flights
O'Hare Intl to LaGuardia flights
Newark to Seattle flights
Los Angeles to Boston flights
LaGuardia to Dallas/Fort Worth flights
LaGuardia to Orlando flights
John F Kennedy Intl to Seattle flights
LaGuardia to Atlanta flights
Seattle to Los Angeles flights
Los Angeles to Seattle flights
Fort Lauderdale to Newark flights
San Francisco to Newark flights
Newark to Dallas/Fort Worth flights
O'Hare Intl to John F Kennedy Intl flights
John F Kennedy Intl to West Palm Beach flights
Newark to O'Hare Intl flights
Seattle to Newark flights
Dallas/Fort Worth to Las Vegas flights
Los Angeles to LaGuardia flights
LaGuardia to Los Angeles flights
Hobby to Las Vegas flights
Dallas/Fort Worth to Denver flights
Dallas/Fort Worth to Newark flights
San Jose to Los Angeles flights
Newark to San Francisco flights

Top 7 airlines flying from Illinois to Arizona

Discover the top 7 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$194FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$113Average$258FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$125Average$219FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$173Average$489FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$175Average$424FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$359FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$216Average$409FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.