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>

$110 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

Thu, Nov 5 - Mon, Nov 9

4:00 pm - 6:59 pm

ORD

PHX

3h 59mnonstop

8:04 pm - 12:33 am

PHX

ORD

3h 29mnonstop

$218Frontier

Mon, Aug 17 - Tue, Aug 18

8:00 am - 11:50 am

MDW

PHX

5h 50m

1 stop

11:35 am - 7:00 pm

PHX

MDW

5h 25m

1 stop

$222Southwest

Wed, Aug 12 - Sat, Aug 15

9:24 am - 1:50 pm

MDW

PHX

6h 26m

1 stop

9:42 am - 6:01 pm

PHX

MDW

6h 19m

1 stop

$225Delta

Wed, Aug 12 - Sat, Aug 15

8:48 am - 1:50 pm

ORD

PHX

7h 02m

1 stop

11:56 pm - 8:44 am

PHX

ORD

6h 48m

1 stop

$225Delta

Sat, Nov 7 - Wed, Nov 11

5:42 pm - 10:44 pm

MLI

PHX

6h 02m

1 stop

2:40 pm - 12:14 am

PHX

MLI

8h 34m

2 stops

$304United Airlines

Fri, Sep 4 - Wed, Sep 9

8:29 pm - 11:24 am

PIA

PHX

16h 55m

1 stop

7:45 am - 5:19 pm

PHX

PIA

31h 34m

2 stops

$328Multiple Airlines

Thu, Jun 25 - Mon, Jun 29

6:52 pm - 12:20 am

MLI

PHX

7h 28m

1 stop

12:35 am - 10:39 am

PHX

MLI

8h 04m

1 stop

$329American Airlines

Sat, Jun 27 - Thu, Jul 9

4:47 pm - 10:06 pm

PIA

PHX

7h 19m

1 stop

12:50 am - 9:17 am

PHX

PIA

6h 27m

1 stop

$329American Airlines

Fri, Sep 4 - Wed, Sep 9

8:29 pm - 11:24 am

PIA

PHX

16h 55m

1 stop

12:47 pm - 5:19 pm

PHX

PIA

26h 32m

1 stop

$338Multiple Airlines

Sat, Oct 24 - Wed, Oct 28

2:28 pm - 6:38 pm

MLI

PHX

6h 10m

1 stop

10:30 am - 9:03 pm

PHX

MLI

8h 33m

2 stops

$382United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$110

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

Most popular time to fly with an average 14% 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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Cabin class

Complete your trip

Direct Flights

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Origins

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Information on your arrival and departure airports

Phoenix (PHX)

PHX

$110 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

Flights to other popular destinations

Flights from domestic origins to Illinois

Choose which airport to fly into in Phoenix

Find deals for your return flight