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 $327 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 $219 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 33 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 $134.

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 $309 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

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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, May 2 - Sat, May 9

4:05 pm - 6:10 pm

ORD

PHX

4h 05mnonstop

6:00 pm - 11:30 pm

PHX

ORD

3h 30mnonstop

$251United Airlines

Sat, May 23 - Sat, May 30

8:13 pm - 10:10 pm

ORD

PHX

3h 57mnonstop

11:50 pm - 5:17 am

PHX

ORD

3h 27mnonstop

$255United Airlines

Fri, May 8 - Sat, May 9

11:05 am - 1:12 pm

ORD

PHX

4h 07mnonstop

12:48 pm - 6:26 pm

PHX

ORD

3h 38mnonstop

$257United Airlines

Mon, Apr 27 - Wed, Apr 29

12:55 pm - 2:58 pm

ORD

PHX

4h 03mnonstop

6:00 pm - 11:30 pm

PHX

ORD

3h 30mnonstop

$260United Airlines

Wed, Apr 29 - Wed, May 13

2:35 pm - 6:45 pm

ORD

PHX

6h 10m

1 stop

11:30 pm - 5:01 am

PHX

ORD

3h 31mnonstop

$261United Airlines

Sat, May 16 - Mon, May 25

8:28 pm - 10:34 pm

ORD

PHX

4h 06mnonstop

11:50 pm - 5:17 am

PHX

ORD

3h 27mnonstop

$264United Airlines

Sat, May 23 - Tue, May 26

8:13 pm - 10:10 pm

ORD

PHX

3h 57mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$265United Airlines

Wed, May 6 - Sun, May 10

7:55 pm - 10:01 pm

ORD

PHX

4h 06mnonstop

11:30 pm - 5:01 am

PHX

ORD

3h 31mnonstop

$266United Airlines

Tue, May 26 - Mon, Jun 1

8:13 pm - 10:10 pm

ORD

PHX

3h 57mnonstop

4:21 pm - 12:44 am

PHX

ORD

6h 23m

1 stop

$270United Airlines

Fri, May 8 - Mon, May 11

1:10 pm - 3:14 pm

ORD

PHX

4h 04mnonstop

4:35 pm - 10:09 pm

PHX

ORD

3h 34mnonstop

$271United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$128
Average price round-trip	$297
Good deal one-way	$691

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly with an average 25% 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 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 $327 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 $219 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 $158 for a return flight and $48 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 33 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 $134.
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 $309 respectively.

7.4

Good9,555 verified ratings

6.6Food

7.1Entertainment

7.7Boarding

8.1Crew

7.3Comfort

10.0 Wonderful

George, Apr 2026

FRA

ORD

The crew was generally professional. Though one of the crew members seemed to be easily annoyed, the others were fine and helpful. The green olives and almonds snack was really good. A great idea, and nice balance of tastes.

6.0 Okay

Verified traveler, Apr 2026

LIM

IAH

It as confusing with the connections and I almost missed my next flight because of the first delay with the first flight. United could have helped passengers go through immigration quicker rather than waiting with everyone else. The flight attendants were super friendly and lovely. The vegetarian food was awful- I did not finish. I would suggest they just do pasta next time

10.0 Wonderful

John, Apr 2026

EWR

EDI

All good flight was 35 minutes early when arriving in Edinburgh

8.0 Very good

John, Apr 2026

TPA

EWR

Flights were on time actually early service was good and crew cheerful

10.0 Wonderful

Margaret, Apr 2026

DEN

ORD

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

8.0 Very good

Verified traveler, Apr 2026

FNA

ROB

From Freetown to Monrovia was good. Leaving the USA was terrible because all my connections flights got delayed.

8.0 Very good

Verified traveler, Apr 2026

BRU

FNA

Everything works smoothly once I got to Brussels. Flying with United Airlines from Atlanta to Chicago and Leaving Chicago for Brussels was a nightmare though. Slept at the airport in Chicago because my flight got delayed from Atlanta to Chicago. No accommodation provided because united airlines said I had economy ticket.

4.0 Mediocre

Verified traveler, Apr 2026

ORD

BRU

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

2.0 Poor

Verified traveler, Apr 2026

ATL

ORD

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

10.0 Wonderful

Verified traveler, Apr 2026

XNA

IAH

Could offer free wifi

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$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 $327 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 $219 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 $158 for a return flight and $48 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 33 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 $134.

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 $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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