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$64+ 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$141
(FlightHub)

One-way from

$64
(Booking.com)

Popular in

March

Cheapest in

September

Average price

$277

Good round-trip deal

$122 or less

Good one-way deal

$68 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. 8% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/259:15 pmORD - LAS
Nonstop4h 04mSpirit Airlines
Sat 6/285:15 amLAS - ORD
Nonstop3h 35mSpirit Airlines
Deal found 6/12$141
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Sun 7/279:56 pmORD - LAS
Nonstop4h 09mMultiple Airlines
Thu 7/318:35 amLAS - ORD
Nonstop3h 38mMultiple Airlines
Deal found 6/11$145
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Fri 6/276:25 amMDW - LAS
Nonstop3h 59mFrontier
Mon 6/309:19 amLAS - MDW
Nonstop3h 37mFrontier
Deal found 6/11$145
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2712:44 pmRFD - LAS
Nonstop3h 32mAllegiant Air
Sun 8/36:30 amLAS - RFD
Nonstop3h 24mAllegiant Air
Deal found 6/11$149
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:10 amMDW - LAS
Nonstop3h 45mSouthwest
Fri 9/1911:40 pmLAS - MDW
Nonstop3h 30mSouthwest
Deal found 6/11$158
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/208:51 pmORD - LAS
Nonstop4h 12mAmerican Airlines
Fri 7/253:27 pmLAS - ORD
Nonstop3h 58mAmerican Airlines
Deal found 6/11$159
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:44 amSTL - LAS
1 stop13h 22mSpirit Airlines
Thu 9/2510:55 pmLAS - STL
1 stop6h 54mSpirit Airlines
Deal found 6/12$163
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Fri 10/105:52 pmSTL - LAS
1 stop7h 44mFrontier
Sat 10/1112:59 amLAS - STL
1 stop6h 08mFrontier
Deal found 6/9$171
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Fri 7/49:56 pmORD - LAS
Nonstop4h 14mFrontier
Sun 7/133:00 pmLAS - ORD
Nonstop4h 06mFrontier
Deal found 6/11$176
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/319:21 amRFD - LAS
1 stop16h 38mMultiple Airlines
Sun 8/36:30 amLAS - RFD
Nonstop3h 24mMultiple Airlines
Deal found 6/11$185
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:44 amSTL - LAS
1 stop13h 22mMultiple Airlines
Wed 9/2412:59 amLAS - STL
1 stop6h 08mMultiple Airlines
Deal found 6/10$185
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/117:00 pmORD - PHX
1 stop6h 16mMultiple Airlines
Sun 9/145:51 pmPHX - ORD
Nonstop3h 34mMultiple Airlines
Deal found 6/11$205

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 June 12, 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

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Wed 6/25

9:15 pm-11:19 pm

Nonstop4h 04m

Las Vegas Harry Reid Intl

Sat 6/28

5:15 am-10:50 am

Nonstop3h 35m

$141

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 7/27

9:56 pm-12:05 am

Nonstop4h 09m

Las Vegas Harry Reid Intl

Thu 7/31

8:35 am-2:13 pm

Nonstop3h 38m

$145

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Fri 6/27

6:25 am-8:24 am

Nonstop3h 59m

Las Vegas Harry Reid Intl

Mon 6/30

9:19 am-2:56 pm

Nonstop3h 37m

$145

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Sun 7/27

12:44 pm-2:16 pm

Nonstop3h 32m

Las Vegas Harry Reid Intl

Sun 8/3

6:30 am-11:54 am

Nonstop3h 24m

$149

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sun 7/20

6:59 pm-9:03 pm

Nonstop4h 04m

Las Vegas Harry Reid Intl

Fri 7/25

7:07 am-12:59 pm

Nonstop3h 52m

$159

ChicagoLas Vegas

MDW - LAS

MDWLAS

Chicago Midway

Tue 7/29

11:05 am-1:00 pm

Nonstop3h 55m

Las Vegas Harry Reid Intl

Thu 7/31

12:35 pm-6:10 pm

Nonstop3h 35m

$159

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Fri 7/4

9:56 pm-12:10 am

Nonstop4h 14m

Las Vegas Harry Reid Intl

Sun 7/13

3:00 pm-9:06 pm

Nonstop4h 06m

$176

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Wed 7/23

11:24 am-11:37 pm

1 stop14h 13m

Las Vegas Harry Reid Intl

Sat 7/26

12:20 am-9:52 am

1 stop7h 32m

$178

ChicagoLas Vegas

RFD - LAS

RFDLAS

Chicago Greater Rockford

Thu 7/31

9:21 am-11:59 pm

1 stop16h 38m

Las Vegas Harry Reid Intl

Sun 8/3

6:30 am-11:54 am

Nonstop3h 24m

$185

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Thu 7/3

2:27 pm-4:05 pm

Nonstop3h 38m

Las Vegas Harry Reid Intl

Fri 7/4

12:58 pm-10:15 am

1 stop19h 17m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 June 12, 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 June 12, 2025.

The most flights from USIL to USAZ are scheduled on a Wednesday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 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 June 12, 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
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 Spirit Airlines, which is currently one of the cheapest options available, starting at $64. Frontier flights start at $71 while deals on Allegiant Air start at $72 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

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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 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$203FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$218FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$113Average$265FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$171Average$483FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$176Average$415FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$369FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$217Average$406FlexibilityNo cancel feeOn-time63%

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