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$56+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
1 adult, Economy
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Cheap flight deals from Illinois to Phoenix

Keep the following information in mind while searching for Illinois to Phoenix flight deals. Data was last updated julio 30, 2025.

Round-trip from

$170
(Priceline)

One-way from

$56
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$257
From Illinois to Phoenix
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One-way flight from Illinois to Phoenix
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Highest demand for flights based on searches. 6% potential increase in price ($19 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 July 2025
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Find 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 julio 30, 2025.

This Priceline deal was found by Cheapflights users on 7/29. 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.
vie. 8/152:15 pmORD - PHX
Nonstop4h 06mFrontier
lun. 8/185:11 pmPHX - ORD
Nonstop3h 44mFrontier
Deal found 7/29$170
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
vie. 11/76:40 pmRFD - AZA
Nonstop3h 30mAllegiant Air
mié. 11/123:09 pmAZA - RFD
Nonstop3h 05mAllegiant Air
Deal found 7/29$172
This Frontier deal was found by Cheapflights users on 7/29. 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.
dom. 9/71:53 pmMDW - PHX
Nonstop3h 47mFrontier
dom. 9/144:35 pmPHX - MDW
Nonstop3h 23mFrontier
Deal found 7/29$173
This FlightHub deal was found by Cheapflights users on 7/29. 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.
vie. 9/192:07 pmORD - PHX
Nonstop4h 04mMultiple Airlines
dom. 9/2112:14 pmPHX - ORD
1 stop8h 34mMultiple Airlines
Deal found 7/29$173
This Cheapflightsfares deal was found by Cheapflights users on 7/30. 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.
jue. 11/67:00 pmORD - PHX
1 stop6h 16mSpirit Airlines
lun. 11/101:12 pmPHX - ORD
1 stop9h 31mSpirit Airlines
Deal found 7/30$180
This Southwest deal was found by Cheapflights users on 7/29. 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.
dom. 8/316:20 amMDW - PHX
Nonstop3h 40mSouthwest
mié. 9/35:40 pmPHX - MDW
Nonstop3h 20mSouthwest
Deal found 7/29$188
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/206:55 pmORD - PHX
Nonstop3h 54mAmerican Airlines
dom. 8/317:00 pmPHX - ORD
Nonstop3h 35mAmerican Airlines
Deal found 7/30$188
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/269:15 amORD - PHX
Nonstop3h 50mUnited Airlines
mar. 9/27:04 amPHX - ORD
Nonstop3h 39mUnited Airlines
Deal found 7/29$197
This Southwest deal was found by Cheapflights users on 7/30. 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.
vie. 8/294:20 pmORD - PHX
1 stop7h 40mSouthwest
dom. 8/3112:25 pmPHX - ORD
Nonstop3h 30mSouthwest
Deal found 7/30$208
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
dom. 8/172:30 pmSTL - PHX
1 stop9h 07mSpirit Airlines
dom. 8/2410:42 pmPHX - STL
1 stop12h 50mSpirit Airlines
Deal found 7/29$209
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/267:53 amSTL - PHX
Nonstop3h 15mAmerican Airlines
lun. 9/17:11 pmPHX - STL
Nonstop3h 05mAmerican Airlines
Deal found 7/30$211
This CheapOair deal was found by Cheapflights users on 7/29. 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.
jue. 9/1112:05 pmSTL - PHX
1 stop11h 59mMultiple Airlines
mar. 9/2312:47 pmPHX - STL
1 stop18h 19mMultiple Airlines
Deal found 7/29$214

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 julio 30, 2025.
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

ORD - PHX

ORDPHX

Chicago O'Hare Intl

vie. 8/15

2:15 pm-4:21 pm

Nonstop4h 06m

Phoenix Sky Harbor Intl

lun. 8/18

5:11 pm-10:55 pm

Nonstop3h 44m

$170

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

vie. 9/19

2:07 pm-4:11 pm

Nonstop4h 04m

Phoenix Sky Harbor Intl

dom. 9/21

12:14 pm-10:48 pm

1 stop8h 34m

$173

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

dom. 9/7

1:53 pm-3:40 pm

Nonstop3h 47m

Phoenix Sky Harbor Intl

dom. 9/14

4:35 pm-9:58 pm

Nonstop3h 23m

$173

ChicagoPhoenix

RFD - AZA

RFDAZA

Chicago Greater Rockford

vie. 9/19

9:48 pm-11:17 pm

Nonstop3h 29m

Phoenix-Mesa Gateway

lun. 9/22

1:48 pm-6:56 pm

Nonstop3h 08m

$175

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

dom. 8/31

6:20 am-8:00 am

Nonstop3h 40m

Phoenix Sky Harbor Intl

mié. 9/3

5:40 pm-11:00 pm

Nonstop3h 20m

$188

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

mié. 8/20

6:55 pm-8:49 pm

Nonstop3h 54m

Phoenix Sky Harbor Intl

dom. 8/31

7:00 pm-12:35 am

Nonstop3h 35m

$188

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

mar. 8/26

9:15 am-11:05 am

Nonstop3h 50m

Phoenix Sky Harbor Intl

mar. 9/2

7:04 am-12:43 pm

Nonstop3h 39m

$197

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

vie. 8/29

4:20 pm-10:00 pm

1 stop7h 40m

Phoenix Sky Harbor Intl

dom. 8/31

12:25 pm-5:55 pm

Nonstop3h 30m

$208

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

dom. 8/17

2:30 pm-9:37 pm

1 stop9h 07m

Phoenix Sky Harbor Intl

dom. 8/24

10:42 pm-1:32 pm

1 stop12h 50m

$209

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

mar. 8/26

7:53 am-9:08 am

Nonstop3h 15m

Phoenix Sky Harbor Intl

lun. 9/1

7:11 pm-12:16 am

Nonstop3h 05m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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, January is the cheapest month in which you can book a flight from Illinois to Phoenix (average of $258). Flying from Illinois to Phoenix 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 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 julio 30, 2025.

When flying from Illinois to Phoenix, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 julio 30, 2025.

The most flights from USIL to PH1 are scheduled on a Monday (50 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (31 on average).

Reviews of airlines servicing Phoenix

Get insights into the airlines that provide service to Phoenix. 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 Phoenix. Reviews last updated julio 30, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Illinois to Phoenix have to say. 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

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Breeze Airways
8.0
Very good
191 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    $56 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Southwest and Frontier, with prices starting from $81 and $93, 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 Brussels Airlines (89%), United Airlines (86%) and Air Canada (84%).

  • What are the cheapest flights from Illinois to Phoenix?

    Looking for the cheapest flight from Illinois to Phoenix? While on average our users pay $825, our data indicates the cheapest price to be $95. The most popular route (Chicago O'Hare Intl - Phoenix Sky Harbor Intl), is priced around $127.

  • 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 $258). Flying from Illinois to Phoenix 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 Phoenix

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Illinois to Phoenix

Discover the top 8 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$69Average$225FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$219FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$114Average$263FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$154Average$212FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$178Average$470FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$374FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$206Average$362FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$367FlexibilityNo cancel feeOn-timeN/A

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