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Sky Harbor Intl

$29+ Cheap flights from Illinois to Sky Harbor Intl (PHX)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PHX
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Illinois to Sky Harbor Intl

Cheapest flights from Illinois to Sky Harbor Intl
Explore the most affordable flight options available from Illinois to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Thu 4/236:15 am
MDW
-
PHX
Nonstop3h 57m
Frontier
Mon 4/279:22 am
PHX
-
MDW
Nonstop3h 27m
Frontier
Deal found 1/25$115
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.
Tue 2/178:10 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Thu 2/1910:19 am
PHX
-
ORD
Nonstop3h 35m
Frontier
Deal found 1/26$115
This Kiwi.com deal was found by Cheapflights users on 1/25. 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.
Sun 2/153:21 pm
MDW
-
PHX
Nonstop4h 07m
Frontier
Fri 2/209:47 pm
PHX
-
MDW
1 stop16h 32m
Frontier
Deal found 1/25$116
This Trip.com deal was found by Cheapflights users on 1/24. 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 2/217:55 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Wed 2/2512:31 pm
PHX
-
ORD
Nonstop3h 32m
Frontier
Deal found 1/24$116
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.
Fri 2/209:17 pm
ORD
-
PHX
Nonstop4h 16m
Frontier
Tue 2/2411:59 pm
PHX
-
ORD
1 stop14h 53m
Frontier
Deal found 1/27$117
This Frontier deal was found by Cheapflights users on 1/25. 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 2/87:30 am
MDW
-
PHX
Nonstop4h 12m
Frontier
Fri 2/203:43 pm
PHX
-
MDW
Nonstop3h 17m
Frontier
Deal found 1/25$118
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:43 am
ORD
-
PHX
Nonstop4h 12m
Frontier
Tue 4/288:02 pm
PHX
-
ORD
1 stop8h 45m
Frontier
Deal found 1/26$118
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/209:17 pm
ORD
-
PHX
Nonstop4h 16m
Frontier
Wed 2/253:05 pm
PHX
-
ORD
1 stop25h 19m
Frontier
Deal found 1/26$119
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.
Tue 2/178:10 am
ORD
-
PHX
Nonstop4h 14m
Frontier
Wed 2/1812:31 pm
PHX
-
ORD
Nonstop3h 32m
Frontier
Deal found 1/26$121
This Frontier deal was found by Cheapflights users on 1/25. 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 4/258:43 am
ORD
-
PHX
Nonstop4h 12m
Frontier
Sun 5/311:12 am
PHX
-
ORD
Nonstop3h 41m
Frontier
Deal found 1/25$122
This CheapOair deal was found by Cheapflights users on 1/25. 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 2/223:21 pm
MDW
-
PHX
Nonstop4h 07m
Frontier
Thu 2/267:23 pm
PHX
-
MDW
Nonstop3h 18m
Frontier
Deal found 1/25$123

Find flight deals from Illinois to Sky Harbor Intl

Keep the following information in mind while searching for Illinois to Sky Harbor Intl flight deals. Data was last updated January 27, 2026.

Round-trip from

$115
(Kiwi.com)

One-way from

$29
(Frontier)

Popular in

March

Cheapest in

August

Average price

$269

Good round-trip deal

$193 or less

Good one-way deal

$114 or less
From Illinois to Phoenix Sky Harbor Intl
Search Deals
One-way flight from Illinois to Phoenix Sky Harbor Intl
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
Price to beat on a round-trip flight from Illinois to Phoenix Sky Harbor Intl.
Search Deals
Price to beat on a one-way flight from Illinois to Phoenix Sky Harbor Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Sky Harbor Intl 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 27, 2026.
Use the filters below to find and compare flights from Illinois to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Illinois

Fly to

Sky Harbor Intl

Route

Depart

Return

Price

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Sat 2/21

7:15 pm-10:15 pm

Nonstop4h 00m

Phoenix Sky Harbor Intl

Sat 2/28

5:15 am-9:30 am

Nonstop3h 15m

$193

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 2/25

5:05 am-8:15 am

Nonstop4h 10m

Phoenix Sky Harbor Intl

Sat 2/28

5:15 am-9:30 am

Nonstop3h 15m

$197

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 2/25

6:45 pm-12:42 am

1 stop6h 57m

Phoenix Sky Harbor Intl

Mon 3/2

12:59 am-8:40 am

1 stop6h 41m

$217

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 3/31

3:55 pm-5:58 pm

Nonstop4h 03m

Phoenix Sky Harbor Intl

Tue 4/7

6:00 pm-11:30 pm

Nonstop3h 30m

$217

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Mon 2/23

3:25 pm-6:20 pm

Nonstop3h 55m

Phoenix Sky Harbor Intl

Fri 2/27

6:00 pm-10:15 pm

Nonstop3h 15m

$217

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 2/25

7:20 pm-12:11 am

1 stop5h 51m

Phoenix Sky Harbor Intl

Mon 3/2

11:50 pm-9:54 am

1 stop9h 04m

$227

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 2/24

6:45 pm-12:42 am

1 stop6h 57m

Phoenix Sky Harbor Intl

Thu 2/26

12:59 am-8:40 am

1 stop6h 41m

$227

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 2/24

2:46 pm-10:15 pm

1 stop8h 29m

Phoenix Sky Harbor Intl

Thu 2/26

11:59 pm-9:41 am

1 stop8h 42m

$227

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 2/13

1:59 pm-8:12 am

1 stop19h 13m

Phoenix Sky Harbor Intl

Tue 2/17

8:04 pm-3:53 pm

2 stops18h 49m

$228

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Fri 3/6

3:50 pm-11:05 pm

2 stops8h 15m

Phoenix Sky Harbor Intl

Tue 3/10

8:50 am-2:20 pm

Nonstop3h 30m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Sky Harbor Intl

Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl 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 Sky Harbor Intl Airport

What is the cheapest month to book a flight from Illinois to Phoenix Sky Harbor Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Illinois to Phoenix Sky Harbor Intl Airport (average of $65). Flying from Illinois to Phoenix Sky Harbor Intl Airport in June is currently the most expensive (average of $176). 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 Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.

When flying from Illinois to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 9% versus a flight in the morning.

What is the cheapest day to fly from Illinois to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Sky Harbor Intl. Price data was last updated on January 24, 2026.

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

Weekly flight availability from Illinois to Phoenix Sky Harbor Intl Airport

Explore weekly flight availability from Illinois to Sky Harbor Intl. 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 27, 2026.

The most flights from USIL to PHX are scheduled on a Monday (37 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (29 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Sky Harbor Intl. 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 Sky Harbor Intl Airport?

    There are many flights that can get you from Illinois to Phoenix Sky Harbor Intl Airport in 4h. Fly via Southwest, Delta, or United Airlines to get the fastest option. Airlines will cover a distance of 1440 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 Sky Harbor Intl Airport one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $41. However, be on the lookout for offers from Allegiant Air and Spirit Airlines, as they are both options that can get you from Illinois to Phoenix Sky Harbor Intl Airport for a low price.

  • What are the most popular routes from Illinois to Phoenix Sky Harbor Intl Airport?

    While some choose either Chicago Midway - Phoenix Sky Harbor Intl or Lambert-St Louis - Phoenix Sky Harbor Intl, Chicago O'Hare Intl - Phoenix Sky Harbor Intl is the most popular route from Illinois to Phoenix Sky Harbor Intl Airport.

  • What are the most reliable airlines from Illinois to Phoenix Sky Harbor Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Illinois to Phoenix Sky Harbor Intl Airport consider choosing Japan Airlines (78%), American Airlines (77%) or British Airways (76%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Phoenix Sky Harbor Intl Airport?

    On average you can expect to pay $702 for a flight from Illinois to Phoenix Sky Harbor Intl Airport. The cheapest flight overall is $55 while the most popular route, (Chicago O'Hare Intl - Phoenix Sky Harbor Intl) is currently priced at $90.

  • Can I find deals for flights from Illinois to Sky Harbor Intl that include hotel bookings?

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

  • How can I find direct flights from Illinois to Sky Harbor Intl?

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

  • Can I find deals for business class flights from Illinois to Sky Harbor Intl?

    Yes. Cheapflights offers flight deals from Illinois to Sky Harbor Intl 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 Sky Harbor Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Phoenix Sky Harbor Intl Airport (average of $65). Flying from Illinois to Phoenix Sky Harbor Intl Airport in June is currently the most expensive (average of $176). 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

Traveling to a place near Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Goodyear
Glendale
Paradise Valley
Casa Grande
Globe
Peoria
Chandler
Payson
Camp Verde
Buckeye
Surprise
Avondale
Guadalupe

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Alternative routes for Illinois to Sky Harbor Intl

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 Sky Harbor Intl

Discover the top 9 airlines that operate flights from Illinois to Sky Harbor Intl. 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 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$66Average$260FlexibilityNo cancel feeOn-time88%
FrontierCheapest$70Average$198FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$98Average$212FlexibilityNo cancel feeOn-time65%
DeltaCheapest$108Average$382FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$154Average$231FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$181Average$347FlexibilityNo 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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