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$62+ Cheap flights from Arizona to Illinois

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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Jun 20 — Jun 271
Fri 6/20
Fri 6/27
1 adult, Economy
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Cheap flight deals from Arizona to Illinois

Keep the following information in mind while searching for Arizona to Illinois flight deals. Data was last updated June 15, 2025.

Round-trip from

$133
(Cheapflightsfares)

One-way from

$62
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$274

Good round-trip deal

$242 or less

Good one-way deal

$139 or less
From Arizona to Illinois
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One-way flight from Arizona to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 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 Arizona to Illinois.
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Price to beat on a one-way flight from Arizona to Illinois.
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Find flight deals from Arizona to Illinois

Cheapest flights from Arizona to Illinois
Explore the most affordable flight options available from Arizona to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 7/38:06 pmLAS - ORD
1 stop8h 45mSpirit Airlines
Sat 7/510:15 pmORD - LAS
Nonstop4h 04mSpirit Airlines
Deal found 6/15$133
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 7/2112:34 amLAS - ORD
Nonstop3h 29mMultiple Airlines
Fri 7/259:56 pmORD - LAS
Nonstop4h 09mMultiple Airlines
Deal found 6/14$135
This Cheapflightsfares deal was found by Cheapflights users on 6/13. 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 6/279:19 amLAS - MDW
Nonstop3h 37mFrontier
Sun 6/296:25 amMDW - LAS
Nonstop3h 59mFrontier
Deal found 6/13$146
This Cheapflightsfares deal was found by Cheapflights users on 6/15. 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 8/13:00 pmLAS - ORD
Nonstop4h 06mFrontier
Mon 8/49:56 pmORD - LAS
Nonstop4h 09mFrontier
Deal found 6/15$156
This Southwest deal was found by Cheapflights users on 6/14. 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 8/295:55 pmLAS - ORD
Nonstop3h 45mSouthwest
Tue 9/25:45 pmORD - LAS
Nonstop3h 50mSouthwest
Deal found 6/14$159
This Southwest deal was found by Cheapflights users on 6/13. 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 8/158:55 amLAS - MDW
Nonstop3h 35mSouthwest
Mon 8/185:15 amMDW - LAS
Nonstop3h 45mSouthwest
Deal found 6/13$159
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 9/2310:06 amLAS - ORD
Nonstop3h 52mAmerican Airlines
Sat 9/278:55 pmORD - LAS
Nonstop3h 57mAmerican Airlines
Deal found 6/14$193
This Mytrip deal was found by Cheapflights users on 6/13. 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.
Fri 7/117:00 amAZA - RFD
Nonstop3h 10mAllegiant Air
Wed 7/301:30 pmRFD - AZA
Nonstop3h 22mAllegiant Air
Deal found 6/13$200
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 7/108:20 amLAS - STL
Nonstop3h 22mFrontier
Sun 7/132:27 pmSTL - LAS
Nonstop3h 36mFrontier
Deal found 6/14$200
This FlightHub deal was found by Cheapflights users on 6/14. 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 9/412:12 pmPHX - ORD
1 stop9h 31mSpirit Airlines
Sat 9/133:21 pmORD - PHX
1 stop21h 56mSpirit Airlines
Deal found 6/14$201
This FlightHub deal was found by Cheapflights users on 6/13. 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 6/217:29 pmPHX - MDW
1 stop17h 27mFrontier
Sun 6/228:38 pmMDW - PHX
Nonstop3h 49mFrontier
Deal found 6/13$201
This Cheapflightsfares deal was found by Cheapflights users on 6/14. 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 10/15:28 pmLAS - STL
1 stop12h 21mSpirit Airlines
Sun 10/58:44 amSTL - LAS
1 stop13h 22mSpirit Airlines
Deal found 6/14$202

Cheapflights Fare Finder

Customize your flight search to find flights from Arizona to Illinois 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 15, 2025.
Use the filters below to find and compare flights from Arizona to Illinois that are best for you.

Fly from

Arizona

Fly to

Illinois

Route

Depart

Return

Price

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Thu 7/3

8:06 pm-6:51 am

1 stop8h 45m

Chicago O'Hare Intl

Sat 7/5

10:15 pm-12:19 am

Nonstop4h 04m

$133

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Mon 7/21

12:34 am-6:03 am

Nonstop3h 29m

Chicago O'Hare Intl

Fri 7/25

9:56 pm-12:05 am

Nonstop4h 09m

$135

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Fri 6/27

9:19 am-2:56 pm

Nonstop3h 37m

Chicago Midway

Sun 6/29

6:25 am-8:24 am

Nonstop3h 59m

$146

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 8/1

3:00 pm-9:06 pm

Nonstop4h 06m

Chicago O'Hare Intl

Mon 8/4

9:56 pm-12:05 am

Nonstop4h 09m

$156

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Fri 8/29

5:55 pm-11:40 pm

Nonstop3h 45m

Chicago O'Hare Intl

Tue 9/2

5:45 pm-7:35 pm

Nonstop3h 50m

$159

Las VegasChicago

LAS - MDW

LASMDW

Las Vegas Harry Reid Intl

Fri 8/15

8:55 am-2:30 pm

Nonstop3h 35m

Chicago Midway

Mon 8/18

5:15 am-7:00 am

Nonstop3h 45m

$159

Las VegasChicago

LAS - ORD

LASORD

Las Vegas Harry Reid Intl

Tue 9/23

10:06 am-3:58 pm

Nonstop3h 52m

Chicago O'Hare Intl

Sat 9/27

8:55 pm-10:52 pm

Nonstop3h 57m

$193

PhoenixChicago

AZA - RFD

AZARFD

Phoenix-Mesa Gateway

Fri 7/11

7:00 am-12:10 pm

Nonstop3h 10m

Chicago Greater Rockford

Wed 7/30

1:30 pm-2:52 pm

Nonstop3h 22m

$200

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 7/10

8:20 am-1:42 pm

Nonstop3h 22m

Lambert-St Louis

Sun 7/13

2:27 pm-4:03 pm

Nonstop3h 36m

$200

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Thu 9/4

12:12 pm-11:43 pm

1 stop9h 31m

Chicago O'Hare Intl

Sat 9/13

3:21 pm-11:17 am

1 stop21h 56m

$201

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

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

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

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

Currently, August is the cheapest month in which you can book a flight from Arizona to Illinois (average of $245). Flying from Arizona to Illinois in March is currently the most expensive (average of $321). 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 AZ to IL?

Find hourly flight availability from Arizona to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 15, 2025.

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

Weekly flight availability from Arizona to Illinois

Explore weekly flight availability from Arizona to Illinois. 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 15, 2025.

The most flights from USAZ to USIL are scheduled on a Sunday (55 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (51 on average).

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated June 15, 2025.
To help decide which airline to fly from Arizona to Illinois, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

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

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

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
4,285 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

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
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,499 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

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
8,798 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

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 Arizona to Illinois. 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 Arizona to Illinois one-way?

    The cheapest airlines for a one-way flight from Arizona to Illinois are Spirit Airlines ($62), Frontier ($78), and United Airlines ($80).

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Arizona to Illinois (average of $245). Flying from Arizona to Illinois in March is currently the most expensive (average of $321). 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 Arizona to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Arizona to Illinois

Discover the top 7 airlines that operate flights from Arizona to Illinois. 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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$65Average$199FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$79Average$214FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$128Average$227FlexibilityNo cancel feeOn-time88%
United AirlinesCheapest$149Average$408FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$167Average$482FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$197Average$402FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$406FlexibilityNo cancel feeOn-timeN/A

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