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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$79 CHEAP FLIGHTS from Illinois to Phoenix (PHX)

PHX

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

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Cheap Flights from Illinois to Phoenix

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Phoenix

Fri, May 8 - Mon, May 11

12:04 pm - 8:33 pm

MDW

PHX

10h 29m

1 stop

11:30 pm - 11:09 am

PHX

MDW

9h 39m

1 stop

$192Frontier

Fri, May 1 - Mon, May 4

7:50 am - 10:12 am

ORD

PHX

4h 22mnonstop

5:15 am - 4:02 pm

PHX

ORD

8h 47m

1 stop

$193Frontier

Sat, May 16 - Sat, May 23

5:47 pm - 10:21 pm

MLI

PHX

30h 34m

2 stops

10:27 pm - 11:30 am

PHX

MLI

11h 03m

1 stop

$290Multiple Airlines

Sat, May 16 - Tue, May 19

1:35 pm - 6:10 pm

PIA

PHX

6h 35m

1 stop

2:51 pm - 10:49 pm

PHX

PIA

5h 58m

1 stop

$291United Airlines

Sat, May 9 - Sat, May 16

1:32 pm - 7:26 pm

PIA

PHX

7h 54m

1 stop

5:05 am - 1:02 pm

PHX

PIA

5h 57m

1 stop

$292American Airlines

Sat, May 16 - Tue, May 19

5:30 pm - 10:34 pm

PIA

PHX

7h 04m

1 stop

12:00 pm - 10:49 pm

PHX

PIA

8h 49m

2 stops

$296United Airlines

Fri, Jul 3 - Sat, Jul 11

5:17 pm - 10:50 pm

MLI

PHX

7h 33m

1 stop

1:15 pm - 10:31 pm

PHX

MLI

7h 16m

1 stop

$299Delta

Thu, May 14 - Wed, May 20

12:19 pm - 11:24 pm

MLI

PHX

13h 05m

1 stop

7:40 am - 11:30 am

PHX

MLI

25h 50m

1 stop

$301Multiple Airlines

Sat, May 16 - Wed, May 20

1:32 pm - 7:26 pm

PIA

PHX

7h 54m

1 stop

1:15 am - 9:23 am

PHX

PIA

6h 08m

1 stop

$320American Airlines

Mon, Jun 29 - Sat, Jul 11

5:17 pm - 10:50 pm

MLI

PHX

7h 33m

1 stop

1:15 pm - 10:31 pm

PHX

MLI

7h 16m

1 stop

$324Delta

Useful Info

Low season	August
High season	March
Cheapest flight	$79

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly with an average 17% increase in price.

Flight from St. Louis to Phoenix Sky Harbor Airport

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

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.

Paradise Valley

Globe

Cave Creek

Guadalupe

Morristown

Everything you need to know for your flight to Phoenix

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Complete your trip

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Information on your arrival and departure airports

Phoenix (PHX)

PHX

$79 Find Cheap Flights from Illinois to Phoenix

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

Cheap Flights from Illinois to Phoenix

Recent round-trip flight deals from Illinois to Phoenix

Recent one-way flight deals from Illinois to Phoenix

Recent last minute flight deals from Illinois to Phoenix

Recent direct flight deals from Illinois to Phoenix

Good to know

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

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?

Everything you need to know for your flight to Phoenix

Information on your arrival and departure airports

Cabin class types available on flights to Phoenix

Complete your trip to Phoenix with a hotel stay or car rental

Find direct flights for Phoenix

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Flights from domestic origins to Illinois

Choose which airport to fly into in Phoenix

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