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$55+ Cheap flights from Phoenix 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — ORD
feb. 27 — mar. 61
jue. 2/27
jue. 3/6
1 adult, Economy
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Cheap flight deals from Phoenix to Illinois

Keep the following information in mind while searching for Phoenix to Illinois flight deals. Data was last updated febrero 22, 2025.

Round-trip from

$120
(Cheapflightsfares)

One-way from

$55
(Frontier)

Popular in

December

Cheapest in

April

Average price

$219
From Phoenix to Illinois
Search Deals
One-way flight from Phoenix to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($37 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).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Phoenix to Illinois

Cheapest flights from Phoenix to Illinois
Explore the most affordable flight options available from Phoenix to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 22, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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.
mié. 3/265:15 amPHX - ORD
1 stop5h 38mMultiple Airlines
mié. 4/24:26 pmORD - PHX
Nonstop4h 08mMultiple Airlines
Deal found 2/21$120
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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.
mié. 4/211:12 amPHX - ORD
Nonstop3h 32mFrontier
dom. 4/64:26 pmORD - PHX
Nonstop4h 08mFrontier
Deal found 2/21$126
This Kiwi.com deal was found by Cheapflights users on 2/20. 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.
sáb. 3/88:02 pmPHX - ORD
1 stop10h 19mSpirit Airlines
mar. 3/119:16 amORD - PHX
1 stop10h 51mSpirit Airlines
Deal found 2/20$132
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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.
vie. 4/410:16 amPHX - MDW
Nonstop3h 25mFrontier
mar. 4/87:25 amMDW - PHX
Nonstop3h 56mFrontier
Deal found 2/21$136
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/183:34 pmAZA - RFD
Nonstop3h 01mAllegiant Air
mar. 3/259:25 pmRFD - AZA
Nonstop3h 43mAllegiant Air
Deal found 2/20$145
This Mytrip deal was found by Cheapflights users on 2/21. 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.
jue. 3/137:52 amPHX - STL
1 stop7h 53mFrontier
lun. 3/176:55 pmSTL - PHX
1 stop28h 33mFrontier
Deal found 2/21$158
This Trip.com deal was found by Cheapflights users on 2/21. 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.
jue. 3/611:15 amPHX - MDW
Nonstop3h 19mMultiple Airlines
mar. 3/117:50 amMDW - PHX
1 stop12h 17mMultiple Airlines
Deal found 2/21$159
This Delta deal was found by Cheapflights users on 2/22. 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.
mar. 4/811:00 amPHX - ORD
1 stop10h 59mDelta
mar. 4/152:15 pmORD - PHX
1 stop8h 22mDelta
Deal found 2/22$203
This American Airlines deal was found by Cheapflights users on 2/21. 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. 4/812:28 pmPHX - MLI
1 stop7h 21mAmerican Airlines
mié. 4/166:30 pmMLI - PHX
1 stop6h 26mAmerican Airlines
Deal found 2/21$209
This American Airlines deal was found by Cheapflights users on 2/20. 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.
mié. 4/26:45 amPHX - ORD
Nonstop3h 29mAmerican Airlines
mié. 4/21:20 pmORD - PHX
Nonstop4h 04mAmerican Airlines
Deal found 2/20$212
This United Airlines deal was found by Cheapflights users on 2/21. 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.
lun. 4/712:45 amPHX - ORD
Nonstop3h 27mUnited Airlines
mar. 4/1511:05 amORD - PHX
Nonstop4h 04mUnited Airlines
Deal found 2/21$217
This Delta deal was found by Cheapflights users on 2/21. 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.
mié. 4/211:00 pmPHX - MDW
1 stop7h 43mDelta
mar. 4/84:59 pmMDW - PHX
1 stop7h 34mDelta
Deal found 2/21$237

Find flights from Phoenix to Illinois within your budget

Customize your flight search to find flights from Phoenix 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 febrero 22, 2025.

Fly from

Phoenix

Fly to

Illinois

Route

Depart

Return

Price

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

mié. 3/26

5:15 am-12:53 pm

1 stop5h 38m

Chicago O'Hare Intl

mié. 4/2

4:26 pm-6:34 pm

Nonstop4h 08m

$120

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

mié. 4/2

11:12 am-4:44 pm

Nonstop3h 32m

Chicago O'Hare Intl

dom. 4/6

4:26 pm-6:34 pm

Nonstop4h 08m

$126

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

sáb. 3/8

8:02 pm-7:21 am

1 stop10h 19m

Chicago O'Hare Intl

mar. 3/11

9:16 am-6:07 pm

1 stop10h 51m

$132

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

vie. 4/4

10:16 am-3:41 pm

Nonstop3h 25m

Chicago Midway

mar. 4/8

7:25 am-9:21 am

Nonstop3h 56m

$136

PhoenixChicago

AZA - RFD

AZARFD

Phoenix-Mesa Gateway

mar. 3/18

3:34 pm-8:35 pm

Nonstop3h 01m

Chicago Greater Rockford

mar. 3/25

9:25 pm-11:08 pm

Nonstop3h 43m

$145

PhoenixSt. Louis

PHX - STL

PHXSTL

Phoenix Sky Harbor Intl

jue. 3/13

7:52 am-5:45 pm

1 stop7h 53m

Lambert-St Louis

lun. 3/17

6:55 pm-9:28 pm

1 stop28h 33m

$158

PhoenixChicago

PHX - MDW

PHXMDW

Phoenix Sky Harbor Intl

jue. 3/6

11:15 am-3:34 pm

Nonstop3h 19m

Chicago Midway

mar. 3/11

7:50 am-6:07 pm

1 stop12h 17m

$159

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

mar. 4/8

11:00 am-11:59 pm

1 stop10h 59m

Chicago O'Hare Intl

mar. 4/15

2:15 pm-8:37 pm

1 stop8h 22m

$203

PhoenixMoline

PHX - MLI

PHXMLI

Phoenix Sky Harbor Intl

mar. 4/8

12:28 pm-9:49 pm

1 stop7h 21m

Moline Quad-City

mié. 4/16

6:30 pm-10:56 pm

1 stop6h 26m

$209

PhoenixChicago

PHX - ORD

PHXORD

Phoenix Sky Harbor Intl

mié. 4/2

6:45 am-12:14 pm

Nonstop3h 29m

Chicago O'Hare Intl

mié. 4/2

1:20 pm-3:24 pm

Nonstop4h 04m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 60 results
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Best time to book a flight from Phoenix to Illinois

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

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

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

Currently, August is the cheapest month in which you can book a flight from Phoenix to Illinois (average of $245). Flying from Phoenix to Illinois in March is currently the most expensive (average of $321). 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 Phoenix 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 febrero 22, 2025.

When flying from Phoenix 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 to Illinois

Explore weekly flight availability from Phoenix 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 febrero 22, 2025.

The most flights from PH1 to USIL are scheduled on a Friday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 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 febrero 22, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Phoenix to Illinois by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,213 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,759 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Allegiant Air
7.3
Good
765 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Overall

8.1

Food

7.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

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

    The cheapest airlines for a one-way flight from Phoenix to Illinois are Frontier ($55), Spirit Airlines ($79), and Allegiant Air ($89).

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

    Most travelers choose Phoenix Sky Harbor Intl - Chicago O'Hare Intl, Phoenix Sky Harbor Intl - Chicago Midway or Phoenix Sky Harbor Intl - Lambert-St Louis when deciding on the best route from Phoenix to Illinois.

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

    Before booking your flight to Illinois from Phoenix, check out the most reliable airlines to get you to your destination on time: Japan Airlines (97%), Emirates (97%), Brussels Airlines( 97%).

  • What are the cheapest flights from Phoenix to Illinois?

    While on average a flight from Phoenix to Illinois is generally $1,082, our data shows the cheapest flight currently is $70. When looking at the most popular route, (Phoenix Sky Harbor Intl - Chicago O'Hare Intl), you can expect to pay $97 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Phoenix 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 to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Phoenix to Illinois (average of $245). Flying from Phoenix to Illinois in March is currently the most expensive (average of $321). 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 Phoenix to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Phoenix to Illinois

Discover the top 7 airlines that operate flights from Phoenix 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 febrero 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$60Average$166FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$65Average$194FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$144Average$252FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$163Average$492FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$163Average$422FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$185Average$380FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$332FlexibilityNo cancel feeOn-timeN/A
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