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 7 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 $367 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 18 flights per week.

$131 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

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Flight Deals

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.

Round-trip

One-way

Last minute

Direct

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

Sun, Dec 6 - Wed, Dec 9

8:30 pm - 11:34 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 04mnonstop

10:15 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$260United Airlines

Fri, Dec 18 - Fri, Dec 18

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

5:27 pm - 10:01 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 34mnonstop

$263United Airlines

Tue, Jan 5 - Sat, Jan 9

8:20 pm - 11:27 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 07mnonstop

8:16 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 39m1 stop Denver Intl

$273United Airlines

Thu, Dec 17 - Sun, Dec 20

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

6:28 pm - 10:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$279United Airlines

Sat, Nov 28 - Wed, Dec 2

9:15 am - 12:24 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 09mnonstop

10:15 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$281United Airlines

Wed, Nov 25 - Tue, Dec 1

2:10 pm - 5:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$283United Airlines

Thu, Nov 26 - Tue, Dec 1

7:00 am - 11:44 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

5h 44m1 stop Denver Intl

5:51 pm - 11:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 08m1 stop Denver Intl

$284United Airlines

Thu, Nov 19 - Mon, Nov 23

12:55 pm - 3:57 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

2:50 pm - 9:30 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 40m1 stop Denver Intl

$287United Airlines

Thu, Dec 24 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

7:00 am - 11:31 amPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$288United Airlines

Thu, Dec 17 - Sun, Dec 20

2:47 pm - 7:58 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 11m1 stop Denver Intl

5:26 pm - 10:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 34mnonstop

$289United Airlines

Recent last minute United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Sat, Oct 31 - Tue, Jan 5

12:55 pm - 2:58 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

4:38 pm - 11:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

6h 20m1 stop Denver Intl

$392United Airlines

Sun, Nov 1 - Tue, Dec 1

8:37 pm - 11:40 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$419United Airlines

Sun, Nov 1 - Tue, Dec 1

1:00 pm - 6:22 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 22m1 stop Denver Intl

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$429United Airlines

Tue, Nov 3 - Tue, Nov 3

7:15 am - 10:17 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$501United Airlines

Wed, Nov 4 - Wed, Nov 11

11:08 am - 2:14 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 06mnonstop

4:31 pm - 10:46 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

5h 15m1 stop Denver Intl

$511United Airlines

Sat, Oct 31 - Mon, Nov 2

11:08 am - 1:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 04mnonstop

9:55 am - 2:35 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$561United Airlines

Sat, Oct 31 - Mon, Nov 2

2:30 pm - 6:55 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

6h 25m1 stop Denver Intl

12:20 pm - 5:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$571United Airlines

Sat, Oct 31 - Tue, Nov 3

12:55 pm - 2:58 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

12:20 pm - 5:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$611United Airlines

Sat, Oct 31 - Sat, Nov 7

2:00 pm - 8:25 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

8h 25m1 stop Los Angeles

1:53 pm - 6:29 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 36mnonstop

$617United Airlines

Sun, Nov 1 - Mon, Nov 2

12:55 pm - 3:58 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

1:53 pm - 6:29 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 36mnonstop

$621United Airlines

Recent direct United Airlines flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Sun, Dec 6 - Wed, Dec 9

8:30 pm - 11:34 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 04mnonstop

10:15 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$260United Airlines

Fri, Dec 18 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

5:06 pm - 9:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 34mnonstop

$263United Airlines

Thu, Dec 17 - Sun, Dec 20

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

6:28 pm - 10:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$279United Airlines

Sat, Nov 28 - Wed, Dec 2

9:15 am - 12:24 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 09mnonstop

10:15 am - 2:55 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 40mnonstop

$281United Airlines

Wed, Nov 25 - Tue, Dec 1

2:10 pm - 5:12 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 02mnonstop

6:20 pm - 10:58 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$283United Airlines

Thu, Dec 24 - Tue, Dec 29

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

7:00 am - 11:31 amPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$288United Airlines

Thu, Nov 19 - Sun, Nov 22

8:37 pm - 11:40 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

5:22 pm - 10:00 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 38mnonstop

$296United Airlines

Thu, Dec 24 - Tue, Jan 5

5:59 am - 9:02 amORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 03mnonstop

9:48 am - 2:30 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 42mnonstop

$299United Airlines

Sat, Dec 19 - Tue, Dec 29

7:59 pm - 11:05 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 06mnonstop

5:06 pm - 9:40 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 34mnonstop

$300United Airlines

Wed, Dec 16 - Sun, Dec 20

9:15 am - 12:24 pmORD Chicago O'Hare Intl-PHX Phoenix Sky Harbor Intl

4h 09mnonstop

6:28 pm - 10:59 pmPHX Phoenix Sky Harbor Intl-ORD Chicago O'Hare Intl

3h 31mnonstop

$302United Airlines

Useful Info

KAYAK's insights & trends for Chicago to Phoenix Sky Harbor Intl Airport flights

Get data-powered insights and trends into United Airlines flights from Chicago to Phoenix Sky Harbor Intl Airport to help you find the cheapest flights, the best time to fly and much more.

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

With United Airlines the cheapest day to fly this route is on Saturday. The most expensive day is Monday.

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

The cheapest month for United Airlines flights from Chicago to Phoenix Sky Harbor Intl Airport is January, where tickets cost $287 (return) on average. On the other hand, the most expensive months to fly this route on United Airlines are July and August, where the average cost of round-trip tickets is $402 and $402 respectively.

Which cabin class options are available on United Airlines flights between Chicago and Phoenix Sky Harbor Intl Airport?

Cabin class availability will depend on the aircraft model and specific route. United Airlines flights on this route offer Economy Class ($366 on average), Prem Economy Class ($826 on average), Business Class ($1,196 on average) and First Class ($1,192 on average).

How far in advance should I book a flight from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

For the absolute cheapest price on United Airlines, our data suggests you should book 4 weeks before departure.

Low season	August
High season	March
Cheapest flight	$131
Average price round-trip	$355
Good deal one-way	$539

Most popular time to fly with an average 17% 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 7 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 $367 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 5 days, the lowest price for a flight with United Airlines from Chicago to Phoenix Sky Harbor Intl Airport was $235 for a return flight and $136 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 18 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 Sunday, when prices are around $95. The most expensive day is generally Thursday, where the average price is around $148.
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 $142 on average. If possible, try to avoid the most expensive months of August and October, where tickets cost $257 and $290 respectively.

7.3

Good10,000 verified ratings

6.7Food

7.1Entertainment

7.7Boarding

7.3Comfort

8.1Crew

6.0 Okay

Joann, Oct 2026

Connection times always good online, but not in reality when first leg is delayed (2 out of 2 times this trip).

6.0 Okay

Joann, Oct 2026

When booking, the connection times seem fine. But in reality, my two connections were cut short by the first leg being delayed due to issues at the destination (too much traffic going into SFO, ORD) and it became extremely stressful.

4.0 Mediocre

Charles, Oct 2026

Promised internet. Tried for nine hours to log in, no way. I tried the free option, I tried the paid option, I tried restarting my phone.. several times! Very aggrevating as I was trying to keep up with an emregency medial issue with my dad, but could not because the promised service was not available.

10.0 Wonderful

Patricia, Oct 2026

It was good flight was smooth, little cold on the plane but other wise good.

2.0 Poor

Nadia, Oct 2026

delayed for 3 hours

10.0 Wonderful

Eric, Oct 2026

Extremely clean planes and pleasant cabin crew.

10.0 Wonderful

Kristi, Oct 2026

I need to note that this flight experience was generally fine but the boarding situation was absolutely a mess and there wasn’t any actual priority boarding. I rated the experience poorly because I’m am genuinely so frustrated with the crew on United taking the baggage space in first class. This flight it didn’t happen, but the last few flights (when I ironically don’t get an opportunity to provide feedback) have been spoiled because upon entering the first class cabin as one of the first few seated passengers, the overhead bins are full and ‘crew’’ tags are on the bags of those taking space. I don’t intend to infer some sort of a class or caste system but it’s absolutely ridiculous that the crew takes the overhead storage above and beyond their most loyal and lucrative customers. They should not even have economy space IMO. And I’ve gotten grief when I’ve noted to the crew the ridiculousness of the notion that the crew (who are the last off the plane) should have priority over flyers who pay. I hope you find a way to convey this message to United because it’s happening with increasing frequency and I intend to find a way to expose the specific crew members who are doing this on a flight by flight basis. (And I have a day job)

8.0 Very good

Shannon, Oct 2026

Attendant never brought my drink

2.0 Poor

JOHN, Oct 2026

Bad I'm still stranded here in Entebbe

2.0 Poor

JOHN, Oct 2026

I had bad experience with United airline. No live rep, they only have AI that respond to customers concern

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$131 Find Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport - Compare and Save

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

KAYAK's insights & trends for Chicago to Phoenix Sky Harbor Intl Airport flights

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

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

Which cabin class options are available on United Airlines flights between Chicago and Phoenix Sky Harbor Intl Airport?

How far in advance should I book a flight from Chicago to Phoenix Sky Harbor Intl Airport with United Airlines?

Good to know

Low season

High season

Cheapest flight

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Good deal one-way

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

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Cabin classes available on flights from Chicago to Phoenix Sky Harbor Intl Airport. 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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