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 82 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 $336 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 $212 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 17 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 $125.

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 January, where plane tickets cost $140 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

$89 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

CHI - PHX

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Flight Deals

Cheap United Airlines Flight Deals from Chicago to Phoenix Sky Harbor Intl Airport

Here are some of the best deals found on KAYAK recently from United Airlines for round-trip flights from Chicago to Phoenix Sky Harbor Intl Airport that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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

Round-trip

One-way

Last minute

Direct

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

Sat, Feb 7 - Sat, Feb 14

12:55 pm - 3:57 pm

ORD

PHX

4h 02mnonstop

1:55 pm - 6:32 pm

PHX

ORD

3h 37mnonstop

$177United Airlines

Sat, Jan 31 - Tue, Feb 3

11:05 am - 2:16 pm

ORD

PHX

4h 11mnonstop

8:10 am - 12:44 pm

PHX

ORD

3h 34mnonstop

$187United Airlines

Tue, Feb 3 - Wed, Feb 11

11:05 am - 2:16 pm

ORD

PHX

4h 11mnonstop

10:22 am - 2:55 pm

PHX

ORD

3h 33mnonstop

$188United Airlines

Tue, Feb 3 - Tue, Feb 10

3:59 pm - 9:54 pm

ORD

PHX

6h 55m1 stop

3:50 pm - 8:24 pm

PHX

ORD

3h 34mnonstop

$197United Airlines

Sat, Jan 17 - Tue, Jan 20

7:56 pm - 10:59 pm

ORD

PHX

4h 03mnonstop

3:35 pm - 10:58 pm

PHX

ORD

6h 23m1 stop

$207United Airlines

Sat, Jan 31 - Tue, Feb 3

12:55 pm - 3:57 pm

ORD

PHX

4h 02mnonstop

12:28 pm - 5:00 pm

PHX

ORD

3h 32mnonstop

$208United Airlines

Sat, Jan 31 - Mon, Feb 2

9:25 am - 12:35 pm

ORD

PHX

4h 10mnonstop

12:52 pm - 7:51 pm

PHX

ORD

5h 59m1 stop

$217United Airlines

Sat, Feb 14 - Tue, Feb 17

2:40 pm - 8:04 pm

ORD

PHX

6h 24m1 stop

6:31 pm - 10:59 pm

PHX

ORD

3h 28mnonstop

$218United Airlines

Tue, Jan 27 - Tue, Feb 3

12:55 pm - 3:57 pm

ORD

PHX

4h 02mnonstop

1:57 pm - 6:29 pm

PHX

ORD

3h 32mnonstop

$219United Airlines

Sat, Feb 28 - Sat, Mar 7

7:55 pm - 11:03 pm

ORD

PHX

4h 08mnonstop

6:31 pm - 10:59 pm

PHX

ORD

3h 28mnonstop

$220United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$89
Average price round-trip	$281

Best time to beat the crowds with an average 10% 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 82 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 $336 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 $212 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 $69 for a return flight and $36 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 17 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 $125.
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 January, where plane tickets cost $140 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

7.4

Good9,139 verified ratings

8.1Crew

6.6Food

7.3Comfort

7.1Entertainment

7.7Boarding

4.0 Mediocre

Jaia, Jan 2026

AKL

SFO

On the way my flight entertainment wouldn’t work the screen went black and no matter how many times I tried to turn it on it wouldn’t. Food was surprisingly good but the tray tables were tiny so you couldn’t get anything else on the table. The seats hardly go back and are not overly comfortable. Wouldn’t fly United again.

10.0 Wonderful

Dr. Joseph, Jan 2026

EWR

ORD

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

10.0 Wonderful

Katie, Jan 2026

PDX

ORD

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

2.0 Poor

Eric, Jan 2026

LAX

SFO

Delayed seven times

10.0 Wonderful

Verified traveler, Jan 2026

NGO

NRT

Going to Tokyo was not so good. Back to Detroit was excellent.

10.0 Wonderful

Khahnie, Jan 2026

LAX

HNL

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

6.0 Okay

Kayden, Jan 2026

IAD

DAY

Someone stunk

2.0 Poor

Alexey, Jan 2026

LIR

IAH

In Liberia airport 5 min before our departure the airport was closed for takeoff for 30 min. Upon arrival to IAH we didn’t have any available gate and waited taxing another 40 min. As a result we arrived for 1+ h later. The walkway to the passport control in IAH is about 1-2 ml long. After the passport control you have to pass the security check again. Only 3 out of 16 checkpoints were open and the line was enormously long. As a result, even though we supposed to have 2.5 hrs gap in between the flights we missed our transfer. United rebooked us for the next available flight early morning and provided free hotel and meal vouchers through.

6.0 Okay

Verified traveler, Jan 2026

MKE

DEN

The flight was delayed by two de-icings. The seatbelt did not work correctly. It did not stay tight.

10.0 Wonderful

Bala, Dec 2025

PVR

IAH

Great, on time, comfortable seats, provide decent refreshments

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

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Other airlines flying from Chicago to Phoenix Sky Harbor Intl Airport

Frontier flights from Chicago to Phoenix Sky Harbor Intl Airport

CHI - PHX

$89 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 82 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 $336 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 $212 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 $69 for a return flight and $36 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 17 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 $125.

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 January, where plane tickets cost $140 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

United Airlines Customer Reviews

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

Other airlines flying from Chicago to Phoenix Sky Harbor Intl Airport

Flight deals from the most popular airlines with KAYAK users flying the route

Cabin class types available on flights to Phoenix Sky Harbor Intl Airport

Cabin classes available on flights to Chicago. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to Phoenix Sky Harbor Intl Airport with a hotel stay or car rental

Flights to other popular destinations

The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Find deals for your return flight

Top United Airlines flights

The most popular destinations for flights with United Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.