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 35 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.

$100 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

Thu, May 28 - Mon, Jun 1

9:43 pm - 11:37 pm

ORD

PHX

3h 54mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$199United Airlines

Sat, Sep 26 - Wed, Sep 30

3:55 pm - 8:09 pm

ORD

PHX

6h 14m

1 stop

9:00 am - 2:23 pm

PHX

ORD

3h 23mnonstop

$208United Airlines

Sat, May 23 - Wed, May 27

8:18 pm - 10:15 pm

ORD

PHX

3h 57mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$209United Airlines

Sat, Aug 8 - Tue, Aug 11

1:18 pm - 3:07 pm

ORD

PHX

3h 49mnonstop

7:07 am - 12:44 pm

PHX

ORD

3h 37mnonstop

$210United Airlines

Tue, Sep 8 - Tue, Sep 15

8:05 pm - 9:58 pm

ORD

PHX

3h 53mnonstop

4:28 pm - 10:05 pm

PHX

ORD

3h 37mnonstop

$211United Airlines

Tue, May 19 - Tue, May 26

11:05 am - 1:12 pm

ORD

PHX

4h 07mnonstop

4:21 pm - 12:44 am

PHX

ORD

6h 23m

1 stop

$213United Airlines

Thu, May 28 - Thu, May 28

5:00 am - 9:00 am

ORD

PHX

6h 00m

1 stop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$219United Airlines

Fri, May 29 - Tue, Jun 9

5:45 pm - 10:25 pm

ORD

PHX

6h 40m

1 stop

11:50 pm - 5:17 am

PHX

ORD

3h 27mnonstop

$220United Airlines

Tue, Sep 8 - Tue, Sep 15

6:00 am - 10:33 am

ORD

PHX

6h 33m

1 stop

11:28 am - 5:05 pm

PHX

ORD

3h 37mnonstop

$221United Airlines

Fri, May 15 - Tue, May 19

1:10 pm - 3:14 pm

ORD

PHX

4h 04mnonstop

4:40 pm - 10:14 pm

PHX

ORD

3h 34mnonstop

$226United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$100
Average price round-trip	$338

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

Most popular time to fly with an average 23% 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 $162 for a return flight and $89 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 35 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

Good9,635 verified ratings

8.1Crew

7.7Boarding

6.6Food

7.3Comfort

7.1Entertainment

6.0 Okay

Guido, Apr 2026

BOI

ORD

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

6.0 Okay

Verified traveler, Apr 2026

BOS

EWR

Food & movies

4.0 Mediocre

Lisa, Apr 2026

DEL

EWR

My food prefer was confirmed by email 2x and still the crew claim they had no pre-order. I taken ill while in India so I needed to avoid Indian sauces and spices, so the problem with the preorder was unacceptable. Additionally, is there a new rule to automatically not to disturb passengers? I would like this as an option. Lastly, for breakfast I needed to avoid Indian and I’m allergic to eggs.. therefore the only option was pancakes and guess what was not available!!!

10.0 Wonderful

Verified traveler, Apr 2026

LAX

FRA

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

2.0 Poor

Omar, Apr 2026

HNL

DEN

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

6.0 Okay

Verified traveler, Apr 2026

YOW

ORD

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

8.0 Very good

Sally, Apr 2026

ORD

SNA

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

8.0 Very good

Sandra, Apr 2026

SFO

FCO

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

10.0 Wonderful

Verified traveler, Apr 2026

MSO

DEN

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

10.0 Wonderful

Janey, Apr 2026

BDA

EWR

It was a really seamless flight and the entertainment selection was excellent.

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

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CHI - PHX

$100 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 $162 for a return flight and $89 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 35 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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