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$59+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Round-trip from

$112
(Expedia)

One-way from

$59
(FlightHub)

Popular in

March

Cheapest in

September

Average price

$339

Good round-trip deal

$181 or less

Good one-way deal

$55 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. 7% potential increase in price ($20 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 March 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 March 31, 2025.

This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/129:02 pmORD - LAS
Nonstop4h 05mSpirit Airlines
Fri 5/1611:46 pmLAS - ORD
Nonstop3h 39mSpirit Airlines
Deal found 3/30$112
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 4/289:55 pmSTL - LAS
Nonstop3h 44mFrontier
Fri 5/23:39 pmLAS - STL
Nonstop3h 26mFrontier
Deal found 3/30$122
This Mytrip deal was found by Cheapflights users on 3/30. 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 5/19:36 pmRFD - LAS
Nonstop3h 41mAllegiant Air
Thu 5/156:15 amLAS - RFD
Nonstop3h 23mAllegiant Air
Deal found 3/30$124
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/197:46 pmORD - LAS
Nonstop4h 31mMultiple Airlines
Wed 4/238:45 pmLAS - ORD
1 stop7h 00mMultiple Airlines
Deal found 3/31$124
This CheapOair deal was found by Cheapflights users on 3/31. 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.
Sun 4/276:15 amMDW - LAS
Nonstop4h 03mFrontier
Fri 5/29:13 amLAS - MDW
Nonstop3h 35mFrontier
Deal found 3/31$140
This FlightHub deal was found by Cheapflights users on 3/30. 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.
Sat 4/261:34 pmORD - PHX
Nonstop4h 10mMultiple Airlines
Sat 4/265:46 pmPHX - ORD
1 stop12h 49mMultiple Airlines
Deal found 3/30$155
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
Sat 4/261:34 pmORD - PHX
Nonstop4h 10mFrontier
Mon 4/2810:43 amPHX - ORD
Nonstop3h 36mFrontier
Deal found 3/30$156
This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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 5/18:14 pmORD - LAS
Nonstop4h 16mFrontier
Mon 5/511:25 pmLAS - ORD
Nonstop3h 45mFrontier
Deal found 3/30$156
This Booking.com deal was found by Cheapflights users on 3/30. 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.
Mon 5/59:55 pmSTL - LAS
Nonstop3h 46mMultiple Airlines
Wed 5/79:24 pmLAS - STL
1 stop9h 51mMultiple Airlines
Deal found 3/30$158
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/147:41 amORD - PHX
1 stop7h 47mSpirit Airlines
Thu 4/242:34 pmPHX - ORD
1 stop13h 59mSpirit Airlines
Deal found 3/30$159
This Southwest deal was found by Cheapflights users on 3/30. 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.
Tue 4/295:25 pmORD - LAS
Nonstop4h 05mSouthwest
Sat 5/35:55 pmLAS - ORD
Nonstop3h 45mSouthwest
Deal found 3/30$159
This Southwest deal was found by Cheapflights users on 3/30. 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.
Tue 4/297:30 amMDW - LAS
Nonstop3h 55mSouthwest
Tue 5/68:25 amLAS - MDW
Nonstop3h 30mSouthwest
Deal found 3/30$159

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 March 31, 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

Mon 5/12

9:02 pm-11:07 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Fri 5/16

11:46 pm-5:25 am

Nonstop3h 39m

$112

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 4/28

9:55 pm-11:39 pm

Nonstop3h 44m

Las Vegas Harry Reid Intl

Fri 5/2

3:39 pm-9:05 pm

Nonstop3h 26m

$122

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Sat 4/19

7:46 pm-10:17 pm

Nonstop4h 31m

Las Vegas Harry Reid Intl

Wed 4/23

8:45 pm-5:45 am

1 stop7h 00m

$124

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

MDW - LAS

MDWLAS

Chicago Midway

Sun 4/27

6:15 am-8:18 am

Nonstop4h 03m

Las Vegas Harry Reid Intl

Fri 5/2

9:13 am-2:48 pm

Nonstop3h 35m

$140

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 4/26

1:34 pm-3:44 pm

Nonstop4h 10m

Phoenix Sky Harbor Intl

Sat 4/26

5:46 pm-8:35 am

1 stop12h 49m

$155

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 4/26

1:34 pm-3:44 pm

Nonstop4h 10m

Phoenix Sky Harbor Intl

Mon 4/28

10:43 am-4:19 pm

Nonstop3h 36m

$156

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Thu 5/1

8:14 pm-10:30 pm

Nonstop4h 16m

Las Vegas Harry Reid Intl

Mon 5/5

11:25 pm-5:10 am

Nonstop3h 45m

$156

St. LouisLas Vegas

STL - LAS

STLLAS

Lambert-St Louis

Mon 5/5

9:55 pm-11:41 pm

Nonstop3h 46m

Las Vegas Harry Reid Intl

Wed 5/7

9:24 pm-9:15 am

1 stop9h 51m

$158

ChicagoLas Vegas

ORD - LAS

ORDLAS

Chicago O'Hare Intl

Tue 4/29

5:25 pm-7:30 pm

Nonstop4h 05m

Las Vegas Harry Reid Intl

Sat 5/3

5:55 pm-11:40 pm

Nonstop3h 45m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 March 31, 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 March 31, 2025.

The most flights from USIL to USAZ are scheduled on a Monday (52 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 March 31, 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
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,344 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 Allegiant Air, which is currently one of the cheapest options available, starting at $59. Spirit Airlines flights start at $60 while deals on Frontier start at $61 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.
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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$169FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$113Average$254FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$115Average$220FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$171Average$455FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$174Average$489FlexibilityNo cancel feeOn-time71%
DeltaCheapest$216Average$401FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$217Average$412FlexibilityNo cancel feeOn-time63%
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