PHX

$86 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 8/25. 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

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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

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, Aug 29 - Wed, Sep 2
Frontier Logo
6:45 pm - 11:24 pm
STL
-
PHX
6h 39m
1 stop
Frontier Logo
10:09 pm - 5:22 pm
PHX
-
STL
17h 13m
2 stops
$255Frontier
Sat, Aug 22 - Tue, Aug 25
Southwest Logo
2:15 pm - 5:45 pm
MDW
-
PHX
5h 30m
1 stop
Southwest Logo
10:35 am - 5:10 pm
PHX
-
MDW
4h 35m
1 stop
$260Southwest
Tue, Jul 28 - Tue, Aug 4
Southwest Logo
10:00 am - 3:20 pm
MDW
-
PHX
7h 20m
2 stops
Southwest Logo
10:35 am - 5:10 pm
PHX
-
MDW
4h 35m
1 stop
$261Southwest
Wed, Sep 16 - Wed, Sep 23
Delta Logo
1:19 pm - 7:17 pm
MDW
-
PHX
7h 58m
1 stop
Delta Logo
11:05 pm - 9:07 am
PHX
-
MDW
8h 02m
1 stop
$265Delta
Sat, Sep 5 - Wed, Sep 9
Delta Logo
11:22 am - 6:08 pm
ORD
-
PHX
8h 46m
1 stop
Delta Logo
6:00 am - 4:14 pm
PHX
-
ORD
8h 14m
1 stop
$265Delta
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
10:37 pm - 12:22 am
ORD
-
PHX
3h 45mnonstop
American Airlines Logo
3:34 pm - 9:30 pm
PHX
-
ORD
3h 56mnonstop
$269American Airlines
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
8:44 am - 11:05 pm
MLI
-
PHX
16h 21m
2 stops
Multiple Airlines Logo
9:03 am - 12:16 pm
PHX
-
MLI
25h 13m
1 stop
$278Multiple Airlines
Sun, Aug 16 - Sat, Aug 22
Multiple Airlines Logo
12:31 pm - 11:27 am
MLI
-
PHX
24h 56m
1 stop
Multiple Airlines Logo
10:09 pm - 12:16 pm
PHX
-
MLI
12h 07m
1 stop
$280Multiple Airlines
Tue, Aug 11 - Tue, Aug 18
American Airlines Logo
6:32 am - 11:17 am
BMI
-
PHX
6h 45m
1 stop
American Airlines Logo
3:55 pm - 11:59 pm
PHX
-
BMI
6h 04m
1 stop
$328American Airlines
Useful Info

Good to know

Low seasonJune
Cheapest flight$86
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly with an average 11% 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)