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$40+ 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 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Trip.com deal was found by Cheapflights users on 1/27. 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.
Mon 2/168:58 pm
MDW
-
PHX
Nonstop4h 10m
Frontier
Sat 2/215:10 pm
PHX
-
MDW
1 stop27h 19m
Frontier
Deal found 1/27$117
This Cheapflightsfares deal was found by Cheapflights users on 1/27. 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 2/93:55 pm
ORD
-
PHX
1 stop8h 14m
Frontier
Sat 2/2812:21 pm
PHX
-
ORD
Nonstop3h 32m
Frontier
Deal found 1/27$117
This Frontier deal was found by Cheapflights users on 1/27. 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.
Sat 2/289:15 am
MDW
-
PHX
1 stop8h 17m
Frontier
Sat 3/145:24 pm
PHX
-
MDW
Nonstop3h 21m
Frontier
Deal found 1/27$118
This Expedia deal was found by Cheapflights users on 1/27. 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 2/236:00 am
ORD
-
PHX
Nonstop4h 09m
Frontier
Tue 3/311:59 pm
PHX
-
ORD
1 stop14h 53m
Frontier
Deal found 1/27$118
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/258:10 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Thu 3/59:17 am
PHX
-
ORD
1 stop12h 57m
Frontier
Deal found 1/26$119
This Expedia deal was found by Cheapflights users on 1/28. 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 5/16:15 am
MDW
-
PHX
Nonstop3h 57m
Frontier
Mon 5/49:22 am
PHX
-
MDW
Nonstop3h 27m
Frontier
Deal found 1/28$120
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/236:00 am
ORD
-
PHX
Nonstop4h 09m
Multiple Airlines
Sat 2/285:10 pm
PHX
-
ORD
1 stop13h 44m
Multiple Airlines
Deal found 1/28$120
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 3/23:29 pm
MDW
-
PHX
Nonstop4h 07m
Frontier
Sat 3/76:24 pm
PHX
-
MDW
Nonstop3h 17m
Frontier
Deal found 1/27$121
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/287:55 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Wed 3/1111:24 am
PHX
-
ORD
Nonstop3h 37m
Frontier
Deal found 1/27$121
This Frontier deal was found by Cheapflights users on 1/27. 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.
Sat 3/72:16 pm
MDW
-
PHX
Nonstop4h 08m
Frontier
Fri 3/135:24 pm
PHX
-
MDW
Nonstop3h 21m
Frontier
Deal found 1/27$122
This Cheapflightsfares deal was found by Cheapflights users on 1/28. 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 2/178:10 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Thu 2/1910:19 am
PHX
-
ORD
Nonstop3h 35m
Frontier
Deal found 1/28$122
This Frontier deal was found by Cheapflights users on 1/27. 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.
Sun 3/82:16 pm
MDW
-
PHX
Nonstop4h 08m
Frontier
Sat 3/145:24 pm
PHX
-
MDW
Nonstop3h 21m
Frontier
Deal found 1/27$123

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 January 29, 2026.

Round-trip from

$117
(Trip.com)

One-way from

$40
(Frontier)

Popular in

March

Cheapest in

August

Average price

$269
From Illinois to Phoenix
Search Deals
One-way flight from Illinois to Phoenix
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
Use the filters below to find and compare flights from Illinois to Phoenix that are best for you.

Fly from

Illinois

Fly to

Phoenix

Route

Depart

Return

Price

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Fri 3/6

8:15 pm-11:05 pm

Nonstop3h 50m

Phoenix Sky Harbor Intl

Tue 3/10

6:00 pm-11:15 pm

Nonstop3h 15m

$197

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 3/11

5:55 am-7:50 am

Nonstop3h 55m

Phoenix Sky Harbor Intl

Tue 3/17

6:00 pm-11:15 pm

Nonstop3h 15m

$197

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 2/9

6:16 pm-9:00 pm

Nonstop3h 44m

Phoenix-Mesa Gateway

Fri 2/20

3:01 pm-7:01 pm

Nonstop3h 00m

$209

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 3/3

6:45 pm-12:42 am

1 stop6h 57m

Phoenix Sky Harbor Intl

Wed 3/4

11:50 pm-8:38 am

1 stop7h 48m

$217

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Thu 3/5

9:30 pm-12:25 am

Nonstop3h 55m

Phoenix Sky Harbor Intl

Tue 3/10

7:00 pm-12:10 am

Nonstop3h 10m

$217

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Mon 2/23

7:51 pm-10:39 pm

Nonstop3h 48m

Phoenix-Mesa Gateway

Fri 2/27

2:59 pm-6:59 pm

Nonstop3h 00m

$220

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Tue 3/3

5:05 am-8:15 am

Nonstop4h 10m

Phoenix Sky Harbor Intl

Wed 3/4

9:40 am-4:45 pm

1 stop6h 05m

$220

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 2/28

7:15 pm-10:15 pm

Nonstop4h 00m

Phoenix Sky Harbor Intl

Tue 3/3

3:35 pm-10:05 pm

1 stop5h 30m

$220

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 2/25

4:25 pm-10:30 pm

1 stop7h 05m

Phoenix Sky Harbor Intl

Sat 2/28

5:15 am-9:30 am

Nonstop3h 15m

$220

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

Fri 4/10

8:35 pm-10:09 pm

Nonstop3h 34m

Phoenix-Mesa Gateway

Wed 4/15

9:00 am-2:01 pm

Nonstop3h 01m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 60 results
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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, April is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $59). Flying from Illinois to Phoenix in December is currently the most expensive (average of $130). 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 January 29, 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 afternoon, which can drop the price by up to 12% 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 January 24, 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. Sunday mornings 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 January 29, 2026.

The most flights from USIL to PH1 are scheduled on a Thursday (37 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 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 Southwest, Allegiant Air, and Delta fly from Illinois to Phoenix in about 3h 44m. The time it takes to get you to your destination can typically vary by up to 3h 13m. Airlines will cover a distance of 1371 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $41 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 $67, 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 Japan Airlines (78%), American Airlines (77%) and British Airways (76%).

  • What are the cheapest flights from Illinois to Phoenix?

    Looking for the cheapest flight from Illinois to Phoenix? While on average our users pay $702, our data indicates the cheapest price to be $55. The most popular route (Chicago O'Hare Intl - Phoenix Sky Harbor Intl), is priced around $72.

  • 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, April is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $59). Flying from Illinois to Phoenix in December is currently the most expensive (average of $130). 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.

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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$203FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$66Average$235FlexibilityNo cancel feeOn-time88%
Spirit AirlinesCheapest$98Average$212FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$382FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$231FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$181Average$382FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$184Average$336FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$196Average$419FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$201Average$348FlexibilityNo cancel feeOn-time63%

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