PHX

$77 Find Cheap Flights from Illinois to Phoenix

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Phoenix departing on 7/27. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Intl Airport

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to Phoenix

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Phoenix that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Phoenix

Tue, Sep 1 - Fri, Sep 4
Frontier Logo
6:45 pm - 11:24 pm
STL
-
PHX
6h 39m
1 stop
Frontier Logo
10:30 pm - 5:50 pm
PHX
-
STL
17h 20m
1 stop
$237Frontier
Mon, Aug 10 - Thu, Aug 13
Frontier Logo
7:10 pm - 3:31 pm
STL
-
PHX
22h 21m
2 stops
Frontier Logo
7:45 am - 6:15 pm
PHX
-
STL
8h 30m
1 stop
$239Frontier
Sat, Aug 1 - Tue, Aug 4
Frontier Logo
3:41 pm - 10:59 pm
STL
-
PHX
9h 18m
1 stop
Frontier Logo
11:19 am - 7:23 pm
PHX
-
STL
6h 04m
1 stop
$240Frontier
Sat, Oct 10 - Sat, Oct 17
Southwest Logo
1:00 pm - 3:55 pm
MDW
-
PHX
4h 55m
1 stop
Southwest Logo
6:10 am - 11:25 am
PHX
-
MDW
3h 15mnonstop
$251Southwest
Tue, Jul 14 - Tue, Jul 14
American Airlines Logo
7:25 am - 9:09 am
ORD
-
PHX
3h 44mnonstop
American Airlines Logo
5:38 pm - 11:30 pm
PHX
-
ORD
3h 52mnonstop
$251American Airlines
Tue, Jul 14 - Tue, Jul 21
Southwest Logo
5:30 am - 9:40 am
MDW
-
PHX
6h 10m
1 stop
Southwest Logo
5:45 pm - 11:10 pm
PHX
-
MDW
3h 25mnonstop
$255Southwest
Wed, Jul 15 - Wed, Jul 22
United Airlines Logo
5:00 am - 9:00 am
ORD
-
PHX
6h 00m
1 stop
United Airlines Logo
2:48 pm - 8:30 pm
PHX
-
ORD
3h 42mnonstop
$255United Airlines
Thu, Aug 6 - Tue, Aug 11
United Airlines Logo
8:30 pm - 10:27 pm
ORD
-
PHX
3h 57mnonstop
United Airlines Logo
4:26 pm - 10:05 pm
PHX
-
ORD
3h 39mnonstop
$257United Airlines
Thu, Aug 6 - Wed, Aug 12
American Airlines Logo
10:35 pm - 12:14 am
ORD
-
PHX
3h 39mnonstop
American Airlines Logo
6:47 pm - 12:28 am
PHX
-
ORD
3h 41mnonstop
$258American Airlines
Tue, Jul 14 - Tue, Jul 14
Alaska Airlines Logo
6:20 am - 12:23 pm
ORD
-
PHX
8h 03m
1 stop
Alaska Airlines Logo
3:13 pm - 11:36 pm
PHX
-
ORD
6h 23m
1 stop
$259Alaska Airlines
Useful Info

Good to know

Low seasonJune
Cheapest flight$77
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Phoenix Sky Harbor Airport

Flights from Illinois to Phoenix: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Illinois to Phoenix 
Learn how KAYAK collects reviews and tips from users.
JanieFlew with SWISS
ORD
-
PHX
Feb 2025
I think you should prebook food or bring your own food.
Verified travelerFlew with United Airlines
ORD
-
PHX
Apr 2024
Use the find my gate feature on the flights phone app if available as the airport is a bit confusing

FAQs for booking Illinois to Phoenix flights

  • How does KAYAK find such low prices on flights from Illinois to Phoenix?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Phoenix.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Phoenix?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Phoenix?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Phoenix with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Phoenix?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phoenix from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Phoenix?

Book flights to Phoenix if you plan to visit one of these locations
Paradise Valley
Globe
Cave Creek
Guadalupe
Morristown

Everything you need to know for your flight to Phoenix

Information on your arrival and departure airports

Phoenix (PHX)