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 8 days before departure. For the cheapest possible price, our data suggests booking 80 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 $366 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 Frontier, where a return flight costs $208 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 36 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 Friday, when prices are around $80. The most expensive day is generally Thursday, where the average price is around $121.

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 $129 on average. If possible, try to avoid the most expensive months of March and August, where tickets cost $231 and $309 respectively.

$90 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

CHI - PHX

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

Here are some of the best deals found on KAYAK recently from United Airlines for round-trip flights from Chicago to Phoenix Sky Harbor Intl Airport 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.

Round-trip

One-way

Last minute

Direct

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

Fri, Oct 31 - Sat, Nov 1

9:15 am - 11:22 amORD-PHX

4h 07mnonstop

6:03 pm - 11:30 pmPHX-ORD

3h 27mnonstop

$189United Airlines

Find Deal

Sat, Nov 8 - Tue, Nov 11

7:39 pm - 10:41 pmORD-PHX

4h 02mnonstop

1:55 pm - 6:28 pmPHX-ORD

3h 33mnonstop

$199United Airlines

Find Deal

Sat, Nov 1 - Mon, Nov 3

9:15 am - 11:21 amORD-PHX

4h 06mnonstop

7:03 pm - 11:30 pmPHX-ORD

3h 27mnonstop

$206United Airlines

Find Deal

Wed, Dec 3 - Mon, Dec 8

7:55 pm - 10:57 pmORD-PHX

4h 02mnonstop

3:55 pm - 8:24 pmPHX-ORD

3h 29mnonstop

$208United Airlines

Find Deal

Wed, Oct 8 - Wed, Oct 15

11:10 am - 12:59 pmORD-PHX

3h 49mnonstop

6:30 pm - 11:59 pmPHX-ORD

3h 29mnonstop

$209United Airlines

Find Deal

Tue, Oct 7 - Wed, Oct 8

8:03 pm - 10:00 pmORD-PHX

3h 57mnonstop

6:30 pm - 11:59 pmPHX-ORD

3h 29mnonstop

$219United Airlines

Find Deal

Wed, Oct 22 - Sat, Oct 25

8:03 pm - 10:00 pmORD-PHX

3h 57mnonstop

10:50 am - 4:29 pmPHX-ORD

3h 39mnonstop

$226United Airlines

Find Deal

Sun, Oct 19 - Fri, Oct 24

7:30 am - 9:19 amORD-PHX

3h 49mnonstop

10:50 am - 4:29 pmPHX-ORD

3h 39mnonstop

$237United Airlines

Find Deal

Wed, Oct 8 - Thu, Oct 9

11:10 am - 12:59 pmORD-PHX

3h 49mnonstop

12:35 pm - 6:12 pmPHX-ORD

3h 37mnonstop

$238United Airlines

Find Deal

Sat, Oct 4 - Tue, Oct 14

12:50 pm - 2:39 pmORD-PHX

3h 49mnonstop

10:50 am - 4:29 pmPHX-ORD

3h 39mnonstop

$244United Airlines

Find Deal

Useful Info

Low season	August
High season	March
Cheapest flight	$90
Average price round-trip	$217
Good deal one-way	$458

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 28% 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 8 days before departure. For the cheapest possible price, our data suggests booking 80 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 $366 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 Frontier, where a return flight costs $208 on average.
What is the cheapest United Airlines flight from Chicago to Phoenix Sky Harbor Intl Airport?
In the last 3 days, the lowest price for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport was $103 for a return flight and $62 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 36 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 Friday, when prices are around $80. The most expensive day is generally Thursday, where the average price is around $121.
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 $129 on average. If possible, try to avoid the most expensive months of March and August, where tickets cost $231 and $309 respectively.

7.4

Good8,924 verified ratings

7.3Comfort

7.7Boarding

6.6Food

8.1Crew

7.1Entertainment

Pros +

Cons -

Customer service was very poor. (in 236 reviews)

Show reviews that mention

2.0 Poor

Julian, Sep 2025

DEN-DRO

Terrible. They wouldn't allow me on my flight on the 14th..

2.0 Poor

Verified traveler, Sep 2025

SFO-MEX

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

8.0 Very good

Verified traveler, Sep 2025

PHL-FRA

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

2.0 Poor

Verified traveler, Sep 2025

CMH-ORD

Terrible, will never use UnderPricer or Kayak ever again.

6.0 Okay

Karen Andrea, Sep 2025

IAH-MCO

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

6.0 Okay

Karen Andrea, Sep 2025

SAT-IAH

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

10.0 Wonderful

Thomas, Aug 2025

CMH-IAD

IAD with the archaic people movers is just a place to be avoided.

6.0 Okay

CLEVELAND, Aug 2025

IAH-LFT

Tight

8.0 Very good

CLEVELAND, Aug 2025

TPA-IAH

Professional and courteous in all aspects.

8.0 Very good

Verified traveler, Aug 2025

BKK-NRT

Overall is good, food okay!

Everything you need to know for your flight from Chicago to Phoenix Sky Harbor Intl Airport

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CHI - PHX

$90 Find Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

Search hundreds of travel sites at once for deals on United Airlines flights from Chicago to Phoenix Sky Harbor Intl Airport

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

Good to know

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

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

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

What is the cheapest United Airlines flight from Chicago to Phoenix Sky Harbor Intl Airport?

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

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

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

United Airlines Customer Reviews

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Everything you need to know for your flight from Chicago to Phoenix Sky Harbor Intl Airport

Other airlines flying from Chicago to Phoenix Sky Harbor Intl Airport

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

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

Complete your trip to Phoenix Sky Harbor Intl Airport with a hotel stay or car rental

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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Top United Airlines flights

The most popular destinations for flights with United Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.