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$82+ Cheap flights from Illinois to Phoenix

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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap flight deals from Illinois to Phoenix

Cheapest flights from Illinois to Phoenix
Explore the most affordable flight options available from Illinois to Phoenix. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This Mytrip deal was found by Cheapflights users on 3/11. 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.
Fri 4/102:29 pm
ORD
-
PHX
1 stop29h 18m
Frontier
Fri 4/1711:19 am
PHX
-
ORD
Nonstop3h 41m
Frontier
Deal found 3/11$158
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:07 am
ORD
-
PHX
2 stops14h 42m
Frontier
Fri 4/2411:19 am
PHX
-
ORD
Nonstop3h 41m
Frontier
Deal found 3/11$159
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/43:35 pm
ORD
-
PHX
Nonstop4h 19m
Frontier
Mon 4/135:15 am
PHX
-
ORD
1 stop7h 57m
Frontier
Deal found 3/14$160
This Gotogate deal was found by Cheapflights users on 3/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:35 pm
RFD
-
AZA
Nonstop3h 34m
Allegiant Air
Wed 5/69:00 am
AZA
-
RFD
Nonstop3h 01m
Allegiant Air
Deal found 3/15$160
This Booking.com deal was found by Cheapflights users on 3/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:20 am
MDW
-
PHX
Nonstop3h 57m
Frontier
Mon 4/274:39 pm
PHX
-
MDW
Nonstop3h 16m
Frontier
Deal found 3/15$161
This Cheapflightsfares deal was found by Cheapflights users on 3/13. 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.
Mon 4/207:35 am
ORD
-
PHX
Nonstop4h 22m
Frontier
Fri 4/2411:19 am
PHX
-
ORD
Nonstop3h 41m
Frontier
Deal found 3/13$161
This Mytrip deal was found by Cheapflights users on 3/11. 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.
Mon 5/118:35 pm
RFD
-
AZA
Nonstop3h 34m
Allegiant Air
Wed 5/202:59 pm
AZA
-
RFD
Nonstop3h 06m
Allegiant Air
Deal found 3/11$161
This Frontier deal was found by Cheapflights users on 3/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:20 am
MDW
-
PHX
Nonstop3h 57m
Frontier
Thu 4/239:37 am
PHX
-
MDW
Nonstop3h 27m
Frontier
Deal found 3/15$162
This Priceline deal was found by Cheapflights users on 3/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:35 pm
ORD
-
PHX
Nonstop4h 19m
Frontier
Fri 4/1711:19 am
PHX
-
ORD
Nonstop3h 41m
Frontier
Deal found 3/13$162
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/38:50 pm
RFD
-
AZA
Nonstop3h 24m
Allegiant Air
Sat 6/67:05 am
AZA
-
RFD
Nonstop3h 09m
Allegiant Air
Deal found 3/15$162
This Trip.com deal was found by Cheapflights users on 3/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/189:14 am
MDW
-
PHX
1 stop16h 04m
Frontier
Fri 4/244:34 pm
PHX
-
MDW
Nonstop3h 16m
Frontier
Deal found 3/13$163
This Expedia deal was found by Cheapflights users on 3/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:10 pm
ORD
-
PHX
1 stop9h 17m
Multiple Airlines
Fri 4/2411:19 am
PHX
-
ORD
Nonstop3h 41m
Multiple Airlines
Deal found 3/12$163

Find flight deals from Illinois to Phoenix

Keep the following information in mind while searching for Illinois to Phoenix flight deals. Data was last updated March 16, 2026.

Round-trip from

$158
(Mytrip)

One-way from

$82
(Super.com)

Popular in

March

Cheapest in

August

Average price

$327
From Illinois to Phoenix
Search Deals
One-way flight from Illinois to Phoenix
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. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Phoenix 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 16, 2026.
Use the filters below to find and compare flights from Illinois to Phoenix that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Sat 5/30

1:01 pm-2:36 pm

Nonstop3h 35m

Phoenix-Mesa Gateway

Sat 6/6

7:05 am-12:14 pm

Nonstop3h 09m

$179
Quickest round-trip

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Sat 6/13

1:04 pm-2:28 pm

Nonstop3h 24m

Phoenix-Mesa Gateway

Wed 6/17

2:51 pm-8:00 pm

Nonstop3h 09m

$212

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Wed 5/13

2:51 pm-4:25 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Fri 5/22

3:17 pm-8:23 pm

Nonstop3h 06m

$216

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 4/14

9:10 am-11:20 am

Nonstop4h 10m

Phoenix Sky Harbor Intl

Sat 4/18

6:00 pm-11:30 pm

Nonstop3h 30m

$227

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Fri 5/1

8:35 pm-10:09 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Mon 5/4

2:44 pm-7:45 pm

Nonstop3h 01m

$239

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Sat 5/30

1:01 pm-2:36 pm

Nonstop3h 35m

Phoenix-Mesa Gateway

Mon 6/8

3:11 pm-8:20 pm

Nonstop3h 09m

$240

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 4/20

8:35 pm-10:09 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Wed 4/22

9:00 am-2:01 pm

Nonstop3h 01m

$243

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Tue 5/5

2:55 pm-4:40 pm

Nonstop3h 45m

Phoenix Sky Harbor Intl

Sun 5/10

11:00 am-5:40 pm

1 stop4h 40m

$256

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Fri 5/8

5:25 am-7:10 am

Nonstop3h 45m

Phoenix Sky Harbor Intl

Sun 5/10

7:35 pm-12:50 am

Nonstop3h 15m

$257

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 4/4

6:30 pm-9:50 pm

1 stop5h 20m

Phoenix Sky Harbor Intl

Wed 4/8

11:55 pm-5:00 am

Nonstop3h 05m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Illinois to Phoenix

Have a flexible travel schedule? Discover the best time to fly to Phoenix 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 Phoenix

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $63). Flying from Illinois to Phoenix in July is currently the most expensive (average of $134). 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 PHX?

Find hourly flight availability from Illinois to Phoenix. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 16, 2026.

When flying from Illinois to Phoenix, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 14% versus a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Phoenix. Price data was last updated on March 14, 2026.

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

Weekly flight availability from Illinois to Phoenix

Explore weekly flight availability from Illinois to Phoenix. 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 16, 2026.

The most flights from USIL to PH1 are scheduled on a Saturday (53 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (38 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Phoenix. 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 Phoenix?

    Airlines like Allegiant Air, United Airlines, and Southwest fly from Illinois to Phoenix in about 3h 35m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 1371 mi. Most flights are nonstop.

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

    $39 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Allegiant Air and Spirit Airlines, with prices starting from $54 and $70, respectively.

  • What are the most popular routes from Illinois to Phoenix?

    When deciding which route to take from Illinois to Phoenix consider Chicago O'Hare Intl - Phoenix Sky Harbor Intl, Chicago Midway - Phoenix Sky Harbor Intl or Lambert-St Louis - Phoenix Sky Harbor Intl as they are the most popular.

  • What are the most reliable airlines from Illinois to Phoenix?

    The top 3 most reliable airlines when flying from Illinois to Phoenix are United Airlines (85%), Air Canada (83%) and Aer Lingus (81%).

  • What are the cheapest flights from Illinois to Phoenix?

    Looking for the cheapest flight from Illinois to Phoenix? While on average our users pay $717, our data indicates the cheapest price to be $51. The most popular route (Chicago O'Hare Intl - Phoenix Sky Harbor Intl), is priced around $148.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $63). Flying from Illinois to Phoenix in July is currently the most expensive (average of $134). 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 Illinois to Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Illinois to Phoenix

Discover the top 9 airlines that operate flights from Illinois to Phoenix. 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$66Average$247FlexibilityNo cancel feeOn-time88%
FrontierCheapest$66Average$229FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$159FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$315FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$231FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$181Average$400FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$184Average$336FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$193Average$411FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$205Average$328FlexibilityNo cancel feeOn-time63%

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