How far in advance should I book tickets for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport?

Generally, when trying to get a below average price for your ticket, try to book around 7 days before departure. For the cheapest possible price, our data suggests booking 82 days before departure.

Is United Airlines the cheapest airline to fly with from Chicago to Phoenix Sky Harbor Intl Airport?

With an average price of $369 return, United Airlines is not the cheapest airline to fly from Chicago to Phoenix Sky Harbor Intl Airport with. Instead, for the lowest price, our data suggests flying with Allegiant Air, where a return flight costs $215 on average.

Does United Airlines fly direct to Phoenix Sky Harbor Intl Airport from Chicago?

Yes, United Airlines does offer direct flights for the route, with around 31 flights per week.

$142 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

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Flight Deals

Cheap United Airlines Flight Deals from Chicago to Phoenix Sky Harbor Intl Airport

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

Round-trip

One-way

Last minute

Direct

Recent round-trip United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Wed, Nov 25 - Wed, Dec 9

8:37 pm - 11:40 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

12:25 pm - 5:05 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$283United Airlines

Tue, Dec 1 - Sat, Dec 5

7:15 am - 10:18 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

12:25 pm - 5:05 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$289United Airlines

Tue, Dec 1 - Tue, Dec 8

8:30 pm - 11:34 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 04mnonstop

2:50 pm - 9:34 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 44m1 stop Denver Intl

$293United Airlines

Tue, Dec 1 - Tue, Dec 1

7:15 am - 10:18 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

4:02 pm - 8:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$294United Airlines

Tue, Dec 1 - Tue, Dec 8

12:59 pm - 6:22 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 23m1 stop Denver Intl

1:45 pm - 6:24 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 39mnonstop

$297United Airlines

Wed, Dec 23 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

7:00 am - 11:31 amPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$299United Airlines

Fri, Dec 18 - Tue, Dec 22

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

6:28 pm - 10:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$300United Airlines

Tue, Dec 1 - Tue, Dec 1

7:15 am - 10:18 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

5:51 pm - 11:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 08m1 stop Denver Intl

$304United Airlines

Thu, Dec 24 - Thu, Dec 31

4:30 pm - 9:47 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 17m1 stop Denver Intl

5:06 pm - 9:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 34mnonstop

$306United Airlines

Thu, Dec 24 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

5:47 pm - 12:30 amPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 43m1 stop Denver Intl

$309United Airlines

Recent last minute United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Fri, Nov 6 - Fri, Dec 11

2:10 pm - 5:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

4:02 pm - 8:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$457United Airlines

Sat, Nov 7 - Tue, Nov 10

7:15 am - 10:17 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

9:55 am - 2:35 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$501United Airlines

Tue, Nov 10 - Sat, Nov 14

11:08 am - 2:14 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 06mnonstop

5:41 pm - 11:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 18m1 stop Denver Intl

$511United Airlines

Fri, Nov 6 - Tue, Nov 24

4:14 pm - 7:16 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

9:55 am - 2:35 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$561United Airlines

Tue, Nov 10 - Thu, Nov 12

9:15 am - 12:24 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 09mnonstop

8:10 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 45m1 stop Denver Intl

$571United Airlines

Sat, Nov 7 - Mon, Nov 9

2:30 pm - 7:55 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 25m1 stop Denver Intl

3:37 pm - 8:14 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 37mnonstop

$581United Airlines

Tue, Nov 10 - Sat, Nov 14

8:37 pm - 11:42 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 05mnonstop

1:53 pm - 6:29 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 36mnonstop

$611United Airlines

Sat, Nov 7 - Sat, Nov 14

2:00 pm - 9:25 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

8h 25m1 stop Los Angeles

5:22 pm - 10:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$617United Airlines

Fri, Nov 6 - Mon, Nov 9

2:10 pm - 5:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

3:37 pm - 8:14 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 37mnonstop

$621United Airlines

Mon, Nov 9 - Mon, Nov 9

12:55 pm - 3:57 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

5:22 pm - 10:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$626United Airlines

Recent direct United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Wed, Nov 25 - Tue, Dec 1

2:10 pm - 5:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$283United Airlines

Tue, Dec 1 - Sat, Dec 5

7:15 am - 10:18 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

12:25 pm - 5:05 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$289United Airlines

Tue, Dec 1 - Tue, Dec 1

7:15 am - 10:18 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

4:02 pm - 8:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$294United Airlines

Wed, Dec 23 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

7:00 am - 11:31 amPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$299United Airlines

Fri, Dec 18 - Tue, Dec 22

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

6:28 pm - 10:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$300United Airlines

Sun, Dec 6 - Sat, Dec 12

12:55 pm - 3:57 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

10:20 am - 3:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$313United Airlines

Sat, Jan 2 - Wed, Jan 6

11:17 am - 2:24 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 07mnonstop

12:21 pm - 5:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 39mnonstop

$314United Airlines

Sat, Dec 19 - Wed, Dec 23

7:01 am - 10:04 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

3:45 pm - 8:23 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$315United Airlines

Sat, Dec 19 - Thu, Dec 24

3:50 pm - 6:53 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

11:10 am - 3:48 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$321United Airlines

Wed, Dec 30 - Sat, Jan 9

8:00 pm - 11:06 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 06mnonstop

8:00 am - 12:35 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 35mnonstop

$326United Airlines

Useful Info

KAYAK's insights & trends for Chicago to Phoenix Sky Harbor Intl Airport flights

Get data-powered insights and trends into United Airlines flights from Chicago to Phoenix Sky Harbor Intl Airport to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

With United Airlines the cheapest day to fly this route is on Saturday. The most expensive day is Monday.

What is the cheapest month to fly with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport?

The cheapest month for United Airlines flights from Chicago to Phoenix Sky Harbor Intl Airport is January, where tickets cost $287 (return) on average. On the other hand, the most expensive months to fly this route on United Airlines are July and August, where the average cost of round-trip tickets is $402 and $402 respectively.

Which cabin class options are available on United Airlines flights between Chicago and Phoenix Sky Harbor Intl Airport?

Cabin class availability will depend on the aircraft model and specific route. United Airlines flights on this route offer Economy Class ($368 on average), Prem Economy Class ($826 on average), Business Class ($1,193 on average) and First Class ($1,190 on average).

How far in advance should I book a flight from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

For the absolute cheapest price on United Airlines, our data suggests you should book 4 weeks before departure.

Low season	August
High season	November
Cheapest flight	$142
Average price round-trip	$365
Good deal one-way	$532

Best time to beat the crowds with an average 1% drop in price.

Most popular time to fly with an average 1% increase in price.

Flight from Chicago O'Hare Airport to Phoenix Sky Harbor Airport

(avg. price over the last 2 weeks)

or less

When to Book Flights with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport?
Generally, when trying to get a below average price for your ticket, try to book around 7 days before departure. For the cheapest possible price, our data suggests booking 82 days before departure.
Is United Airlines the cheapest airline to fly with from Chicago to Phoenix Sky Harbor Intl Airport?
With an average price of $369 return, United Airlines is not the cheapest airline to fly from Chicago to Phoenix Sky Harbor Intl Airport with. Instead, for the lowest price, our data suggests flying with Allegiant Air, where a return flight costs $215 on average.
What is the cheapest United Airlines flight from Chicago to Phoenix Sky Harbor Intl Airport?
In the last 5 days, the lowest price for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport was $222 for a return flight and $122 for a one-way flight.
Does United Airlines fly direct to Phoenix Sky Harbor Intl Airport from Chicago?
Yes, United Airlines does offer direct flights for the route, with around 31 flights per week.
What’s the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?
On average, the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines is Sunday, when prices are around $95. The most expensive day is generally Thursday, where the average price is around $149.
What’s the cheapest month to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?
The cheapest month for United Airlines flights to Phoenix Sky Harbor Intl Airport from Chicago is generally January, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of March and October, where tickets cost $262 and $290 respectively.

7.3

Good10,000 verified ratings

6.7Food

8.1Crew

7.7Boarding

7.3Comfort

7.1Entertainment

6.0 Okay

Jacqueline, Nov 2026

We sat on the tarmac in Denver for over 30 minutes because a plane was in our gate. The pilot kept saying it will just be 5 minutes or less. However, we sat for over 30 minutes. Experiences like this make customers not trust what the pilot is saying.

10.0 Wonderful

Verified traveler, Nov 2026

Everything was a very good

10.0 Wonderful

Verified traveler, Nov 2026

On time departing and arrived early.

2.0 Poor

Charles, Nov 2026

Waited on tarmac for approximately 15-25 minutes before taking off. When landing, the time it took to taxi to our gate was the also 15-25 minutes.

2.0 Poor

Charles, Nov 2026

Waited on tarmac to take off for approximately 15-25 minutes. When landing, the taxi to our gate took a similar amount of time. This happened on both of my United flights.

2.0 Poor

Shebani, Nov 2026

The plane was so old. I paid a ridiculous amount to fly business and there was no internet for six hours! This can't be happening in 2026 and especially in cross country flights where there are a high volume of business travelers.

10.0 Wonderful

Jan, Nov 2026

Efficient boarding, Entertainment system on United WiFi not working

8.0 Very good

Lorna, Nov 2026

Convenient and consistent.

10.0 Wonderful

Zuleika, Nov 2026

Loved the easy process to board and the experience overall was smooth

10.0 Wonderful

Constantin, Nov 2026

All good and smooth

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$142 Find Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport - Compare and Save

Cheap United Airlines Flight Deals from Chicago to Phoenix Sky Harbor Intl Airport

Recent round-trip United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Recent one-way United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Recent last minute United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Recent direct United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

KAYAK's insights & trends for Chicago to Phoenix Sky Harbor Intl Airport flights

What’s the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

What is the cheapest month to fly with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport?

Which cabin class options are available on United Airlines flights between Chicago and Phoenix Sky Harbor Intl Airport?

How far in advance should I book a flight from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

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High season

Cheapest flight

Average price round-trip

Good deal one-way

When to Book Flights with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport

FAQs for flying to Phoenix Sky Harbor Intl Airport with United Airlines

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Cabin class types available on flights to Phoenix Sky Harbor Intl Airport

Cabin classes available on flights from Chicago to Phoenix Sky Harbor Intl Airport. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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