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 9 days before departure. For the cheapest possible price, our data suggests booking 60 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 $325 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 $195 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 39 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 Tuesday, when prices are around $81. The most expensive day is generally Saturday, where the average price is around $126.

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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

$88 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

CHI - PHX

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One-way

Last minute

Direct

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

Fri, Apr 17 - Fri, Apr 17

3:55 pm - 5:58 pm

ORD

PHX

4h 03mnonstop

11:59 pm - 5:29 am

PHX

ORD

3h 30mnonstop

$175United Airlines

Wed, Apr 22 - Mon, Apr 27

2:35 pm - 6:45 pm

ORD

PHX

6h 10m

1 stop

11:59 pm - 5:29 am

PHX

ORD

3h 30mnonstop

$181United Airlines

Fri, Apr 24 - Sun, Apr 26

7:20 am - 9:22 am

ORD

PHX

4h 02mnonstop

11:59 pm - 5:29 am

PHX

ORD

3h 30mnonstop

$196United Airlines

Tue, Apr 14 - Sat, Apr 18

3:55 pm - 5:58 pm

ORD

PHX

4h 03mnonstop

6:00 pm - 11:30 pm

PHX

ORD

3h 30mnonstop

$197United Airlines

Tue, Apr 7 - Fri, Apr 10

12:55 pm - 4:54 pm

ORD

PHX

5h 59m

1 stop

11:59 pm - 5:29 am

PHX

ORD

3h 30mnonstop

$205United Airlines

Mon, Apr 6 - Fri, Apr 10

8:10 pm - 10:15 pm

ORD

PHX

4h 05mnonstop

6:00 pm - 11:30 pm

PHX

ORD

3h 30mnonstop

$216United Airlines

Fri, May 1 - Tue, May 5

4:05 pm - 6:10 pm

ORD

PHX

4h 05mnonstop

4:40 pm - 10:14 pm

PHX

ORD

3h 34mnonstop

$217United Airlines

Wed, Apr 29 - Sun, May 3

2:35 pm - 6:45 pm

ORD

PHX

6h 10m

1 stop

11:30 pm - 5:01 am

PHX

ORD

3h 31mnonstop

$222United Airlines

Wed, Apr 29 - Sun, May 3

2:05 pm - 6:45 pm

ORD

PHX

6h 40m

1 stop

11:30 pm - 5:01 am

PHX

ORD

3h 31mnonstop

$226United Airlines

Fri, Apr 17 - Sun, Apr 19

9:35 pm - 11:41 pm

ORD

PHX

4h 06mnonstop

7:00 am - 12:36 pm

PHX

ORD

3h 36mnonstop

$235United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$88
Average price round-trip	$336

Best time to beat the crowds with an average 9% drop in price.

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

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

(price for this month)

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 9 days before departure. For the cheapest possible price, our data suggests booking 60 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 $325 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 $195 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 $113 for a return flight and $42 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 39 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 Tuesday, when prices are around $81. The most expensive day is generally Saturday, where the average price is around $126.
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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

7.4

Good9,363 verified ratings

7.1Entertainment

7.7Boarding

7.3Comfort

6.6Food

8.1Crew

6.0 Okay

Valerie, Feb 2026

CLE

EWR

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

4.0 Mediocre

Dr. Joseph, Feb 2026

ORD

IAH

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

10.0 Wonderful

Karina, Feb 2026

IAH

LAS

On time arrived early

8.0 Very good

Jack, Feb 2026

SFO

PDX

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

10.0 Wonderful

Verified traveler, Feb 2026

IAH

MEI

Movies offered

10.0 Wonderful

Verified traveler, Feb 2026

SAN

IAH

Complimentary light meal would be appreciated. But great flight crew service on all legs

2.0 Poor

Verified traveler, Feb 2026

IAH

GUA

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

10.0 Wonderful

tania, Feb 2026

CID

ORD

Everything

4.0 Mediocre

Verified traveler, Feb 2026

MUC

EWR

Poor. Crew allowed children to run around and scream and disturb passanger’s seats.

6.0 Okay

Verified traveler, Feb 2026

CLJ

MUC

Excellent

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

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CHI - PHX

$88 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?

Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 60 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 $325 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 $195 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 $113 for a return flight and $42 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 39 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 Tuesday, when prices are around $81. The most expensive day is generally Saturday, where the average price is around $126.

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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

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

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