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 14 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 $328 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.

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 $136.

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 March and August, where tickets cost $242 and $269 respectively.

$128 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

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

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One-way

Last minute

Direct

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

Sat, Aug 29 - Mon, Aug 31

9:05 am - 11:01 am

ORD

PHX

3h 56mnonstop

9:00 am - 2:44 pm

PHX

ORD

3h 44mnonstop

$199United Airlines

Sat, May 23 - Sat, May 30

8:18 pm - 10:15 pm

ORD

PHX

3h 57mnonstop

4:29 pm - 12:44 am

PHX

ORD

6h 15m

1 stop

$209United Airlines

Tue, Jun 9 - Tue, Jun 23

9:28 pm - 11:22 pm

ORD

PHX

3h 54mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$220United Airlines

Fri, May 29 - Wed, Jun 3

6:10 pm - 10:59 pm

ORD

PHX

6h 49m

1 stop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$236United Airlines

Fri, May 29 - Mon, Jun 1

6:10 pm - 10:59 pm

ORD

PHX

6h 49m

1 stop

11:50 pm - 5:17 am

PHX

ORD

3h 27mnonstop

$253United Airlines

Tue, Jun 2 - Wed, Jun 3

1:18 pm - 3:07 pm

ORD

PHX

3h 49mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$255United Airlines

Wed, May 20 - Wed, May 27

11:05 am - 1:12 pm

ORD

PHX

4h 07mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$257United Airlines

Thu, Aug 13 - Sun, Aug 16

8:05 pm - 9:58 pm

ORD

PHX

3h 53mnonstop

7:07 am - 12:44 pm

PHX

ORD

3h 37mnonstop

$258United Airlines

Wed, Jun 3 - Tue, Jun 9

9:42 pm - 11:36 pm

ORD

PHX

3h 54mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$265United Airlines

Thu, May 28 - Thu, May 28

1:18 pm - 3:07 pm

ORD

PHX

3h 49mnonstop

11:50 pm - 5:17 am

PHX

ORD

3h 27mnonstop

$266United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$128
Average price round-trip	$352

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 22% 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 14 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 $328 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 3 days, the lowest price for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport was $165 for a return flight and $58 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 Tuesday, when prices are around $81. The most expensive day is generally Saturday, where the average price is around $136.
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 March and August, where tickets cost $242 and $269 respectively.

7.4

Good9,672 verified ratings

7.3Comfort

8.1Crew

6.6Food

7.1Entertainment

7.7Boarding

6.0 Okay

Verified traveler, Apr 2026

SFO

YVR

Some crew were unfriendly or in some cases just straight up rude.

8.0 Very good

Verified traveler, Apr 2026

SJO

SFO

Comfortable seats, some staff were friendly.

2.0 Poor

Verified traveler, Apr 2026

SNA

ORD

Snacks and service could have been much better.

4.0 Mediocre

Michael, Apr 2026

SNA

DEN

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

10.0 Wonderful

Linda, Apr 2026

TVC

ORD

Crew was wonderful!

8.0 Very good

Verified traveler, Apr 2026

DEN

IAD

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

8.0 Very good

Timothy, Apr 2026

ORD

CID

A long delay. Don't travel late in the day.

10.0 Wonderful

Verified traveler, Apr 2026

SJO

IAD

Crew was very attentive, flight early.

10.0 Wonderful

Verified traveler, Apr 2026

ORD

BOS

Super friendly with lots of drink options an entertainment. Friendly crew.

8.0 Very good

Verified traveler, Apr 2026

ZRH

ORD

Flight crew was super friendly and helpful. Food was frequent and honestly pretty good. Plenty of on-board entertainment. Economy seats are super cramped for such a long flight, but the crew allowed people to get up and stretch, and kids could wander with their parents, so we all made it work. Overall a very good experience.

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

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CHI - PHX

$128 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 14 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 $328 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 3 days, the lowest price for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport was $165 for a return flight and $58 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 Tuesday, when prices are around $81. The most expensive day is generally Saturday, where the average price is around $136.

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 March and August, where tickets cost $242 and $269 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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