What airlines fly to Phoenix Sky Harbor Intl Airport?

American Airlines, Frontier and United Airlines are the top three most popular airlines that fly to Phoenix Sky Harbor Intl Airport from Illinois according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Phoenix Sky Harbor Intl Airport. Keep in mind that there are 8 different airlines that fly to Phoenix Sky Harbor Intl Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Phoenix Sky Harbor Intl Airport?

Average flight duration from Illinois to Phoenix Sky Harbor Intl Airport depends on which airport you fly into and out of. Flying from Chicago to Phoenix Sky Harbor Intl Airport is 3h 46m on average, while flying from Peoria to Phoenix Sky Harbor Intl Airport is 5h 53m on average. Phoenix Sky Harbor Intl Airport is the most popular airport in Phoenix Sky Harbor Intl Airport.

How many flights depart from Illinois to Phoenix Sky Harbor Intl Airport on average per week?

As of November 2025, 364 flights take off from Illinois and land in Phoenix Sky Harbor Intl Airport each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.

What is the cheapest airline that flies from Illinois to Phoenix Sky Harbor Intl?

Frontier, Southwest, and United Airlines are the most popular carriers operating from Illinois to Phoenix Sky Harbor Intl

How many flights depart from Illinois to Phoenix Sky Harbor Intl Airport on average per day?

As of November 2025, there are 52 flights per day flying from Illinois to Phoenix Sky Harbor Intl Airport. The most common time of day flights depart is 5:00PM, with 39% of flights taking off in the afternoon.

How many operators does momondo search for flights from Illinois to Phoenix Sky Harbor Intl Airport?

As of November 2025, there are 8 operators available to choose from for flights from Illinois to Phoenix Sky Harbor Intl Airport.

How old do you have to be to fly from Illinois to Phoenix Sky Harbor Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Phoenix Sky Harbor Intl Airport.

What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?

The required travel and health documents for your Phoenix Sky Harbor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Phoenix Sky Harbor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$37 Cheap Flights from Illinois to Phoenix Sky Harbor Intl Airport in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:36 pm - 11:07 pmSTL-PHX

3h 31mnonstop

10:31 pm - 10:02 amPHX-STL

10h 31m1 stop

$149Frontier

Find Deal

Fri, Feb 6 - Fri, Feb 20

3:53 pm - 6:26 pmSTL-PHX

3h 33mnonstop

7:43 pm - 12:12 pmPHX-STL

15h 29m1 stop

$150Frontier

Find Deal

Fri, Nov 28 - Wed, Dec 3

7:25 am - 10:50 pmORD-PHX

16h 25m2 stops

2:05 pm - 6:48 pmPHX-ORD

3h 43mnonstop

$163Multiple Airlines

Find Deal

Tue, Jan 27 - Mon, Feb 2

8:20 am - 11:49 pmORD-PHX

16h 29m2 stops

4:12 pm - 12:12 amPHX-ORD

7h 00m1 stop

$167Multiple Airlines

Find Deal

Wed, Dec 3 - Thu, Dec 4

5:05 am - 8:15 amMDW-PHX

4h 10mnonstop

6:35 pm - 10:50 pmPHX-MDW

3h 15mnonstop

$187Southwest

Find Deal

Wed, Feb 4 - Tue, Feb 10

12:50 pm - 3:48 pmORD-PHX

3h 58mnonstop

12:45 am - 5:10 amPHX-ORD

3h 25mnonstop

$187United Airlines

Find Deal

Wed, Dec 17 - Tue, Dec 23

1:25 pm - 4:26 pmORD-PHX

4h 01mnonstop

6:05 am - 10:37 amPHX-ORD

3h 32mnonstop

$188American Airlines

Find Deal

Sat, Feb 7 - Sun, Feb 15

1:55 pm - 4:50 pmMDW-PHX

3h 55mnonstop

5:50 am - 10:05 amPHX-MDW

3h 15mnonstop

$189Southwest

Find Deal

Tue, Jan 20 - Sun, Jan 25

5:00 am - 7:50 amORD-PHX

3h 50mnonstop

12:58 am - 5:34 amPHX-ORD

3h 36mnonstop

$194American Airlines

Find Deal

Wed, Dec 17 - Tue, Dec 23

4:18 pm - 9:16 pmORD-PHX

5h 58m1 stop

12:24 pm - 4:55 pmPHX-ORD

3h 31mnonstop

$207United Airlines

Find Deal

Tue, Dec 9 - Tue, Dec 16

Frontier flights from Illinois to Phoenix Sky Harbor Intl Airport

Our best Frontier deals on Illinois to Phoenix Sky Harbor Intl Airport flight tickets

Frontier

Feb 6

STL8:36 pmLambert-St Louis

3h 31m

PHX11:07 pmPhoenix Sky Harbor Intl

Feb 20

PHX10:31 pmPhoenix Sky Harbor Intl

10h 31m

1 stop

STL10:02 amLambert-St Louis

$149

Find similar

Frontier

Nov 28

STL3:53 pmLambert-St Louis

3h 33m

PHX6:26 pmPhoenix Sky Harbor Intl

Dec 3

PHX7:43 pmPhoenix Sky Harbor Intl

15h 29m

1 stop

STL12:12 pmLambert-St Louis

$150

Find similar

Frontier

Dec 3

STL7:43 pmLambert-St Louis

13h 23m

1 stop

PHX8:06 amPhoenix Sky Harbor Intl

Dec 14

PHX7:00 amPhoenix Sky Harbor Intl

26h 14m

1 stop

STL10:14 amLambert-St Louis

$153

Find similar

Southwest flights from Illinois to Phoenix Sky Harbor Intl Airport

Our best Southwest deals on Illinois to Phoenix Sky Harbor Intl Airport flight tickets

Southwest

Feb 4

MDW5:05 amChicago Midway

4h 10m

PHX8:15 amPhoenix Sky Harbor Intl

Feb 10

PHX6:35 pmPhoenix Sky Harbor Intl

3h 15m

MDW10:50 pmChicago Midway

$187

Find similar

Southwest

Jan 20

MDW1:55 pmChicago Midway

3h 55m

PHX4:50 pmPhoenix Sky Harbor Intl

Jan 25

PHX5:50 amPhoenix Sky Harbor Intl

3h 15m

MDW10:05 amChicago Midway

$189

Find similar

Southwest

Dec 9

MDW5:25 amChicago Midway

3h 50m

PHX8:15 amPhoenix Sky Harbor Intl

Dec 14

PHX8:10 pmPhoenix Sky Harbor Intl

3h 15m

MDW12:25 amChicago Midway

$207

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 2/6

8:36 pm-11:07 pm

Nonstop3h 31m

Phoenix Sky Harbor Intl

Fri 2/20

10:31 pm-10:02 am

1 stop10h 31m

$149

St. LouisPhoenix

STL - PHX

STLPHX

Lambert-St Louis

Fri 11/28

3:53 pm-6:26 pm

Nonstop3h 33m

Phoenix Sky Harbor Intl

Wed 12/3

7:43 pm-12:12 pm

1 stop15h 29m

$150

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 1/27

7:25 am-10:50 pm

2 stops16h 25m

Phoenix Sky Harbor Intl

Mon 2/2

2:05 pm-6:48 pm

Nonstop3h 43m

$163

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/3

8:20 am-11:49 pm

2 stops16h 29m

Phoenix Sky Harbor Intl

Thu 12/4

4:12 pm-12:12 am

1 stop7h 00m

$167

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Wed 2/4

5:05 am-8:15 am

Nonstop4h 10m

Phoenix Sky Harbor Intl

Tue 2/10

6:35 pm-10:50 pm

Nonstop3h 15m

$187

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/17

12:50 pm-3:48 pm

Nonstop3h 58m

Phoenix Sky Harbor Intl

Tue 12/23

12:45 am-5:10 am

Nonstop3h 25m

$187

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Sat 2/7

1:25 pm-4:26 pm

Nonstop4h 01m

Phoenix Sky Harbor Intl

Sun 2/15

6:05 am-10:37 am

Nonstop3h 32m

$188

ChicagoPhoenix

MDW - PHX

MDWPHX

Chicago Midway

Tue 1/20

1:55 pm-4:50 pm

Nonstop3h 55m

Phoenix Sky Harbor Intl

Sun 1/25

5:50 am-10:05 am

Nonstop3h 15m

$189

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Wed 12/17

5:00 am-7:50 am

Nonstop3h 50m

Phoenix Sky Harbor Intl

Tue 12/23

12:58 am-5:34 am

Nonstop3h 36m

$194

ChicagoPhoenix

ORD - PHX

ORDPHX

Chicago O'Hare Intl

Tue 12/9

4:18 pm-9:16 pm

1 stop5h 58m

Phoenix Sky Harbor Intl

Tue 12/16

12:24 pm-4:55 pm

Nonstop3h 31m

$207

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Phoenix Sky Harbor Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Phoenix Sky Harbor Intl Airport?

In general, August is the cheapest month to fly from Illinois to Phoenix Sky Harbor Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $229. If you are unable to visit Phoenix Sky Harbor Intl Airport during the month of August, then departing from Illinois during the month September is also very affordable. Most momondo users find prices during this month for around $229.

What is the cheapest day to depart on your flight to Phoenix Sky Harbor Intl Airport?

On average, the least expensive day to fly to Phoenix Sky Harbor Intl Airport from Illinois is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $304. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $382. These prices are subject to change though, so be sure to set up a Price Alert for flights to Phoenix Sky Harbor Intl Airport.

What is the cheapest time of day to depart on your flight to Phoenix Sky Harbor Intl Airport?

At noon is the cheapest time of day to fly from Illinois to Phoenix Sky Harbor Intl Airport when you can find flight prices for as low as $282. Flying to Phoenix Sky Harbor Intl Airport at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $355. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to Phoenix Sky Harbor Intl flight route?

Fly from Chicago Midway to Phoenix Sky Harbor Intl for the best Illinois - Phoenix Sky Harbor Intl flight prices

How far in advance should I book a flight to Phoenix Sky Harbor Intl Airport?

You are more likely to see cheaper flights to Phoenix Sky Harbor Intl Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Phoenix Sky Harbor Intl Airport for around $288 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Phoenix Sky Harbor Intl Airport from Illinois for as low as $255 on momondo.

What cabin class options are available on Illinois to Phoenix Sky Harbor Intl flights?

There are 4 cabin classes available to choose from on Illinois to Phoenix Sky Harbor Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Phoenix Sky Harbor Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Phoenix Sky Harbor Intl Airport.

Cheap Illinois to Phoenix Sky Harbor Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Phoenix Sky Harbor Intl Airport

Best Price Found	$111
Fastest flight time	3h 22m
Direct flights	Every day

The best one-way flight to Phoenix Sky Harbor Intl Airport from Illinois in the past 72 hours is $111. The best round-trip flight deal from Illinois to Phoenix Sky Harbor Intl Airport found on momondo in the last 72 hours is $180.

The fastest flight from Illinois to Phoenix Sky Harbor Intl Airport takes 3h 22m

Direct flights go from Illinois to Phoenix Sky Harbor Intl Airport every day.

Search flight deals

When did momondo last update prices for flights from Illinois to Phoenix Sky Harbor Intl Airport?
Prices for flights from Illinois to Phoenix Sky Harbor Intl Airport refresh daily.
How many operators does momondo search for flights from Illinois to Phoenix Sky Harbor Intl Airport?
As of November 2025, there are 8 operators available to choose from for flights from Illinois to Phoenix Sky Harbor Intl Airport.
How old do you have to be to fly from Illinois to Phoenix Sky Harbor Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Phoenix Sky Harbor Intl Airport.
What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?
The required travel and health documents for your Phoenix Sky Harbor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Phoenix Sky Harbor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Phoenix Sky Harbor Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Phoenix Sky Harbor Intl Airport is Boeing 737-800, representing 19.19% of all bookings. The subsequent popular models are Airbus A321neo at 15.67%, Boeing 737-900 at 14.39%, and Airbus A321-100/200 at 11.22%.

Best airlines flying from Illinois to Phoenix Sky Harbor Intl Airport

Compare and see reviews for airlines that fly from Illinois to Phoenix Sky Harbor Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $92	Free Cancellation	Rating 5.8 3,113 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $98	Free Cancellation	Rating 6.3 8,136 reviews	Search Spirit Airlines flights
Alaska Airlines	PriceFrom $154	Free Cancellation	Rating 8.0 11,267 reviews	Search Alaska Airlines flights
Allegiant Air	PriceFrom $166	Free Cancellation	Rating 7.2 697 reviews	Search Allegiant Air flights
United Airlines	PriceFrom $183	Free Cancellation	Rating 7.4 9,012 reviews	Search United Airlines flights
American Airlines	PriceFrom $191	Free Cancellation	Rating 7.2 11,047 reviews	Search American Airlines flights
Southwest	PriceFrom $206	Free Cancellation	Rating 8.0 4,235 reviews	Search Southwest flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights

Scottsdale

Mesa

Tempe

Glendale

Chandler

Gilbert

Peoria

Surprise

Casa Grande

Goodyear

Buckeye

Apache Junction

Payson

Wickenburg

Avondale

Paradise Valley

Camp Verde

Fountain Hills

Litchfield Park

Cave Creek

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Phoenix?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Phoenix for you.

Can I find flights from Illinois to Phoenix with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Phoenix from Illinois with this policy.

How can momondo help me find flights from Illinois to Phoenix?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Phoenix from Illinois.

I’m not ready to book a flight from Illinois to Phoenix right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Phoenix, momondo offers a useful price alert feature which will track prices for flights to Phoenix from Illinois and alert you when they change.

An easier way to manage your Phoenix Sky Harbor Intl Airport trip

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Cheap flights from Illinois to Phoenix from $37

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Phoenix departing on 1/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

Filter for what you want

Filter for what you want

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Price Alerts

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Find the cheapest flights from Illinois to Phoenix

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Frontier flights from Illinois to Phoenix Sky Harbor Intl Airport

Our best Frontier deals on Illinois to Phoenix Sky Harbor Intl Airport flight tickets

Southwest flights from Illinois to Phoenix Sky Harbor Intl Airport

Our best Southwest deals on Illinois to Phoenix Sky Harbor Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Illinois to Phoenix Sky Harbor Intl Airport that are best for you.

See travel insights to Phoenix from

How to get the cheapest flight ticket from Illinois to Phoenix Sky Harbor Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Phoenix Sky Harbor Intl Airport?

What is the cheapest day to depart on your flight to Phoenix Sky Harbor Intl Airport?

What is the cheapest time of day to depart on your flight to Phoenix Sky Harbor Intl Airport?

What is the cheapest Illinois to Phoenix Sky Harbor Intl flight route?

Fly from Chicago Midway to Phoenix Sky Harbor Intl for the best Illinois - Phoenix Sky Harbor Intl flight prices

How far in advance should I book a flight to Phoenix Sky Harbor Intl Airport?

What cabin class options are available on Illinois to Phoenix Sky Harbor Intl flights?

There are 4 cabin classes available to choose from on Illinois to Phoenix Sky Harbor Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Phoenix Sky Harbor Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Phoenix Sky Harbor Intl Airport.

What is the cheapest airline that flies from Illinois to Phoenix Sky Harbor Intl?

Frontier, Southwest, and United Airlines are the most popular carriers operating from Illinois to Phoenix Sky Harbor Intl

What airlines fly to Phoenix Sky Harbor Intl Airport?

How many flights depart from Illinois to Phoenix Sky Harbor Intl Airport on average per day?

As of November 2025, there are 52 flights per day flying from Illinois to Phoenix Sky Harbor Intl Airport. The most common time of day flights depart is 5:00PM, with 39% of flights taking off in the afternoon.

How many flights depart from Illinois to Phoenix Sky Harbor Intl Airport on average per week?

As of November 2025, 364 flights take off from Illinois and land in Phoenix Sky Harbor Intl Airport each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.

How long does it take to fly to Phoenix Sky Harbor Intl Airport?

Cheap Illinois to Phoenix Sky Harbor Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Phoenix Sky Harbor Intl Airport

Best Price Found

Fastest flight time

Direct flights

When did momondo last update prices for flights from Illinois to Phoenix Sky Harbor Intl Airport?

How many operators does momondo search for flights from Illinois to Phoenix Sky Harbor Intl Airport?

How old do you have to be to fly from Illinois to Phoenix Sky Harbor Intl Airport?

What documentation or ID do you need to fly to Phoenix Sky Harbor Intl Airport?

What is the most popular plane model from Illinois to Phoenix Sky Harbor Intl Airport?

Best airlines flying from Illinois to Phoenix Sky Harbor Intl Airport

Compare and see reviews for airlines that fly from Illinois to Phoenix Sky Harbor Intl Airport with momondo

Traveling to a place near Phoenix?

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Phoenix?

Can I find flights from Illinois to Phoenix with flexible booking policies on momondo?

How can momondo help me find flights from Illinois to Phoenix?

I’m not ready to book a flight from Illinois to Phoenix right now. Can momondo alert me if prices change?

An easier way to manage your Phoenix Sky Harbor Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Phoenix

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo