Illinois

$55+ Cheap flights from Sky Harbor Intl (PHX) 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
Jan 25 — Feb 11
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Cheap flight deals from Sky Harbor Intl to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2025.

Round-trip from

$118
(Frontier)

One-way from

$55
(Frontier)
From Phoenix Sky Harbor Intl to Illinois
One-way flight from Phoenix Sky Harbor Intl to Illinois

Find flight deals from Sky Harbor Intl to Illinois

Cheapest flights from Sky Harbor Intl to Illinois
Explore the most affordable flight options available from Sky Harbor Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This Frontier deal was found by Cheapflights users on 1/20. 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.
Thu 2/137:10 pmPHX - ORD
Nonstop3h 29mFrontier
Tue 2/182:58 pmORD - PHX
Nonstop4h 07mFrontier
Deal found 1/20$118
This Trip.com deal was found by Cheapflights users on 1/19. 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.
Thu 5/155:50 amPHX - STL
1 stop25h 19mFrontier
Mon 5/196:53 pmSTL - PHX
1 stop7h 02mFrontier
Deal found 1/19$118
This FlightHub deal was found by Cheapflights users on 1/20. 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.
Tue 2/49:00 amPHX - MDW
1 stop14h 17mFrontier
Mon 2/107:15 amMDW - PHX
1 stop6h 51mFrontier
Deal found 1/20$119
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
Fri 1/3111:56 amPHX - ORD
1 stop8h 56mMultiple Airlines
Mon 2/37:50 amORD - PHX
1 stop6h 16mMultiple Airlines
Deal found 1/20$123
This Priceline deal was found by Cheapflights users on 1/19. 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.
Fri 1/2411:56 amPHX - ORD
1 stop8h 56mSpirit Airlines
Mon 1/271:35 pmORD - PHX
1 stop6h 38mSpirit Airlines
Deal found 1/19$154
This United Airlines deal was found by Cheapflights users on 1/19. 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.
Sat 2/2211:59 pmPHX - ORD
Nonstop3h 22mUnited Airlines
Tue 2/257:35 amORD - PHX
Nonstop4h 07mUnited Airlines
Deal found 1/19$177
This American Airlines deal was found by Cheapflights users on 1/19. 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 3/412:45 amPHX - ORD
Nonstop3h 15mAmerican Airlines
Wed 3/127:00 amORD - PHX
Nonstop3h 58mAmerican Airlines
Deal found 1/19$178
This Southwest deal was found by Cheapflights users on 1/20. 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.
Thu 2/207:35 pmPHX - MDW
Nonstop3h 10mSouthwest
Sat 3/19:15 pmMDW - PHX
Nonstop4h 00mSouthwest
Deal found 1/20$197
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 2/196:00 amPHX - MLI
1 stop8h 51mAmerican Airlines
Wed 2/264:23 pmMLI - PHX
1 stop7h 51mAmerican Airlines
Deal found 1/20$209
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/212:32 pmPHX - ORD
1 stop5h 55mDelta
Sat 2/225:13 pmORD - PHX
1 stop7h 29mDelta
Deal found 1/20$237
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2812:59 amPHX - MDW
1 stop8h 43mDelta
Mon 3/32:08 pmMDW - PHX
1 stop9h 41mDelta
Deal found 1/19$237
This Expedia deal was found by Cheapflights users on 1/20. 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.
Tue 5/69:00 amPHX - STL
2 stops12h 59mMultiple Airlines
Mon 5/126:53 pmSTL - PHX
1 stop7h 02mMultiple Airlines
Deal found 1/20$288

Find flights from Sky Harbor Intl to Illinois within your budget

Customize your flight search to find flights from Sky Harbor Intl 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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Thu 2/13

7:10 pm-11:39 pm

Nonstop3h 29m

Chicago O'Hare Intl

Tue 2/18

2:58 pm-6:05 pm

Nonstop4h 07m

$118

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

Thu 5/15

5:50 am-9:09 am

1 stop25h 19m

Lambert-St Louis

Mon 5/19

6:53 pm-11:55 pm

1 stop7h 02m

$118

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Wed 2/12

7:00 am-12:17 am

1 stop16h 17m

Chicago Midway

Sun 2/16

7:00 am-10:10 am

Nonstop4h 10m

$119

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 1/31

11:56 am-9:52 pm

1 stop8h 56m

Chicago O'Hare Intl

Mon 2/3

7:50 am-1:06 pm

1 stop6h 16m

$123

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 2/1

11:56 am-9:52 pm

1 stop8h 56m

Chicago O'Hare Intl

Fri 2/7

10:47 pm-11:01 am

1 stop13h 14m

$160

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Sat 2/22

11:59 pm-4:21 am

Nonstop3h 22m

Chicago O'Hare Intl

Tue 2/25

7:35 am-10:42 am

Nonstop4h 07m

$177

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Tue 3/4

12:45 am-5:00 am

Nonstop3h 15m

Chicago O'Hare Intl

Wed 3/12

6:00 am-7:58 am

Nonstop3h 58m

$178

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

Sat 2/22

5:00 am-9:15 am

Nonstop3h 15m

Chicago Midway

Mon 2/24

9:20 pm-12:20 am

Nonstop4h 00m

$197

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

Wed 2/19

6:00 am-3:51 pm

1 stop8h 51m

Moline Quad-City

Wed 2/26

4:23 pm-11:14 pm

1 stop7h 51m

$209

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

Fri 2/14

12:59 am-10:28 am

1 stop8h 29m

Chicago O'Hare Intl

Tue 2/18

7:18 pm-12:46 am

1 stop6h 28m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 57 results
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Best time to book a flight from Sky Harbor Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sky Harbor Intl 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.

Travel insights for flights from Sky Harbor Intl to Illinois

Get recent, data-driven insights about flights from Sky Harbor Intl to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Illinois (average of $245). Flying from Phoenix Sky Harbor Intl Airport to Illinois in March is currently the most expensive (average of $320). 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 PHX to IL?

Find hourly flight availability from Sky Harbor Intl 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 January 20, 2025.

When flying from Phoenix Sky Harbor Intl Airport to Illinois, 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 Phoenix Sky Harbor Intl Airport to Illinois

Explore weekly flight availability from Sky Harbor Intl 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 January 20, 2025.

The most flights from PHX to USIL are scheduled on a Monday (44 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (33 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 January 20, 2025.
To help decide which airline to fly from Phoenix to Illinois, see what other customers have to say about Frontier, Spirit Airlines and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.1
Very good
4,659 reviews
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
9,696 reviews
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

8.0
Very good
8,521 reviews
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
8,982 reviews
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

7.4
Good
801 reviews
8.1
Very good
4,659 reviews

Crew

8.7

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Illinois one-way?

    One-way options have recently been found by users for as low as $55 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $85 and United Airlines from $89 one-way.

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

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

    The top 3 most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Illinois are Japan Airlines (98%), Emirates (95%) and Brussels Airlines (95%).

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

    Looking at all options, your cheapest flight can be booked for $91. While the most popular route (Phoenix Sky Harbor Intl - Chicago O'Hare Intl) can be booked for $106 on average our data indicates $1,235 when flying from Phoenix Sky Harbor Intl Airport to Illinois.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Illinois (average of $245). Flying from Phoenix Sky Harbor Intl Airport to Illinois in March is currently the most expensive (average of $320). 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 Sky Harbor Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Sky Harbor Intl to Illinois

Discover the top 6 airlines that operate flights from Sky Harbor Intl 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$60Average$173FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$65Average$194FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$162Average$498FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$164Average$431FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$171Average$361FlexibilityNo cancel feeOn-time63%
DeltaCheapest$215Average$332FlexibilityNo cancel feeOn-timeN/A
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