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 $329 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 28 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 $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

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One-way

Last minute

Direct

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

Wed, Jun 3 - Tue, Jun 9

9:42 pm - 11:36 pm

ORD

PHX

3h 54mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$255United Airlines

Wed, Jun 3 - Sat, Jun 13

9:42 pm - 11:36 pm

ORD

PHX

3h 54mnonstop

4:21 pm - 12:44 am

PHX

ORD

6h 23m

1 stop

$265United Airlines

Wed, Jun 3 - Tue, Jun 9

6:10 pm - 10:59 pm

ORD

PHX

6h 49m

1 stop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$269United Airlines

Thu, May 28 - Thu, Jun 4

9:43 pm - 11:37 pm

ORD

PHX

3h 54mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$271United Airlines

Tue, May 26 - Thu, Jun 4

9:43 pm - 11:37 pm

ORD

PHX

3h 54mnonstop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$273United Airlines

Sat, Jun 20 - Sat, Jun 20

6:00 am - 12:25 pm

ORD

PHX

8h 25m

1 stop

4:29 pm - 12:44 am

PHX

ORD

6h 15m

1 stop

$275United Airlines

Tue, Aug 4 - Tue, Aug 11

5:00 am - 9:00 am

ORD

PHX

6h 00m

1 stop

9:00 am - 2:44 pm

PHX

ORD

3h 44mnonstop

$277United Airlines

Thu, May 28 - Thu, Jun 4

5:45 pm - 10:25 pm

ORD

PHX

6h 40m

1 stop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$281United Airlines

Sat, Jun 20 - Wed, Jun 24

7:05 am - 12:25 pm

ORD

PHX

7h 20m

1 stop

5:49 pm - 11:31 pm

PHX

ORD

3h 42mnonstop

$282United Airlines

Tue, May 26 - Thu, Jun 4

8:18 pm - 10:15 pm

ORD

PHX

3h 57mnonstop

4:21 pm - 12:44 am

PHX

ORD

6h 23m

1 stop

$283United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$128
Average price round-trip	$323
Good deal one-way	$510

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

(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 $329 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 $166 for a return flight and $88 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 28 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 $269 respectively.

7.4

Good9,680 verified ratings

6.6Food

7.7Boarding

7.1Entertainment

8.1Crew

7.3Comfort

10.0 Wonderful

Verified traveler, May 2026

IAD

LHR

Wifi serves

4.0 Mediocre

Verified traveler, May 2026

ICN

SFO

good crew but no good choice for food

10.0 Wonderful

Eirene, May 2026

EWR

LHR

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

10.0 Wonderful

Eirene, May 2026

YYZ

EWR

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

8.0 Very good

LILLY, May 2026

SFO

HKG

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

6.0 Okay

Verified traveler, May 2026

KIX

SFO

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

6.0 Okay

Verified traveler, May 2026

SFO

ICN

too small seat and food was terrable

8.0 Very good

Jason, May 2026

BDL

HNL

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

8.0 Very good

Marianne, May 2026

LHR

DEN

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

10.0 Wonderful

HL, Apr 2026

ICN

SFO

Three times meal served, fast return without drama

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 $329 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 $166 for a return flight and $88 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 28 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 $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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