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 80 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 $351 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 $200 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 34 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 Thursday, where the average price is around $121.

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 $139 on average. If possible, try to avoid the most expensive months of March 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

Sun, Feb 15 - Sat, Feb 21

4:10 pm - 7:18 pmORD-PHX

4h 08mnonstop

7:00 am - 11:29 amPHX-ORD

3h 29mnonstop

$177United Airlines

Find Deal

Sat, Jan 17 - Wed, Jan 21

4:20 pm - 7:22 pmORD-PHX

4h 02mnonstop

8:10 am - 12:44 pmPHX-ORD

3h 34mnonstop

$187United Airlines

Find Deal

Sun, Jan 11 - Sun, Jan 18

11:05 am - 2:14 pmORD-PHX

4h 09mnonstop

1:57 pm - 6:31 pmPHX-ORD

3h 34mnonstop

$189United Airlines

Find Deal

Wed, Dec 3 - Sat, Dec 6

11:15 am - 2:15 pmORD-PHX

4h 00mnonstop

12:24 pm - 4:55 pmPHX-ORD

3h 31mnonstop

$198United Airlines

Find Deal

Sat, Jan 24 - Sat, Jan 31

11:05 am - 2:16 pmORD-PHX

4h 11mnonstop

10:22 am - 2:55 pmPHX-ORD

3h 33mnonstop

$199United Airlines

Find Deal

Sun, Jan 25 - Thu, Jan 29

11:05 am - 2:14 pmORD-PHX

4h 09mnonstop

3:50 pm - 8:24 pmPHX-ORD

3h 34mnonstop

$201United Airlines

Find Deal

Thu, Dec 4 - Tue, Dec 9

7:55 pm - 10:57 pmORD-PHX

4h 02mnonstop

1:45 pm - 6:18 pmPHX-ORD

3h 33mnonstop

$207United Airlines

Find Deal

Sat, Dec 13 - Wed, Dec 17

9:25 am - 12:32 pmORD-PHX

4h 07mnonstop

5:46 pm - 11:59 pmPHX-ORD

5h 13m1 stop

$208United Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

7:55 pm - 10:57 pmORD-PHX

4h 02mnonstop

5:46 pm - 11:59 pmPHX-ORD

5h 13m1 stop

$217United Airlines

Find Deal

Sun, Feb 15 - Sat, Feb 21

7:15 am - 10:20 amORD-PHX

4h 05mnonstop

5:36 pm - 11:59 pmPHX-ORD

5h 23m1 stop

$224United Airlines

Find Deal

Useful Info

Low season	August
High season	March
Cheapest flight	$89
Average price round-trip	$303

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 28% 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 80 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 $351 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 $200 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 $138 for a return flight and $59 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 34 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 Thursday, where the average price is around $121.
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 $139 on average. If possible, try to avoid the most expensive months of March and August, where tickets cost $231 and $309 respectively.

7.4

Good8,997 verified ratings

7.3Comfort

8.1Crew

7.1Entertainment

7.7Boarding

6.6Food

Pros +

The flight arrived early and that was great (in 143 reviews)

Cons -

The space in economy plus. (in 296 reviews)

Show reviews that mention

2.0 Poor

Gray, Nov 2025

IAD-SFO

7 hours delayed due to operational issues on United’s end. Basically laziness.

6.0 Okay

Verified traveler, Nov 2025

PDX-ORD

Hard to like a late night/overnight flight..

2.0 Poor

Verified traveler, Nov 2025

EWR-ORF

Trash

10.0 Wonderful

Alan, Oct 2025

IAD-PVD

Short flight but an "eager to help" crew made the journey more enjoyable!

2.0 Poor

Verified traveler, Oct 2025

FRA-DTW

Not enough veg food available for passengers. I actually did not get the veg food and was told it was over, and I starved the entire flight duration.

10.0 Wonderful

Dr. Joseph, Oct 2025

STL-ORD

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

10.0 Wonderful

Verified traveler, Oct 2025

MEX-EWR

Flight left on time. Boarding was easy. Arrived to EWR 30 mins early. Luggage was deplaned in good time. Overall a very good experience.

10.0 Wonderful

Sandra, Oct 2025

FCO-SFO

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

2.0 Poor

Verified traveler, Oct 2025

ORF-EWR

The person I bought the ticket for didn’t make the flight.

4.0 Mediocre

Nicole, Oct 2025

IAH-MCI

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

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

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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?

Is United Airlines the cheapest airline to fly with from Chicago to Phoenix Sky Harbor Intl Airport?

What is the cheapest United Airlines flight from Chicago to Phoenix Sky Harbor Intl Airport?

Does United Airlines fly direct to Phoenix Sky Harbor Intl Airport from Chicago?

What’s the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

What’s the cheapest month to fly from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

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

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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.

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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.

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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.