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 $340 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 36 flights per week.

$128 Cheap United Airlines Flights from Chicago to Phoenix Sky Harbor Intl Airport

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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

Wed, Aug 5 - Mon, Aug 10

10:25 am - 12:22 pm

ORD

PHX

3h 57mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$255United Airlines

Fri, Sep 4 - Mon, Sep 7

5:00 am - 9:04 am

ORD

PHX

6h 04m

1 stop

6:20 am - 11:59 am

PHX

ORD

3h 39mnonstop

$256United Airlines

Sun, Aug 16 - Sat, Aug 22

5:00 am - 9:04 am

ORD

PHX

6h 04m

1 stop

9:00 am - 2:43 pm

PHX

ORD

3h 43mnonstop

$257United Airlines

Fri, Sep 11 - Mon, Sep 14

9:12 am - 11:08 am

ORD

PHX

3h 56mnonstop

8:45 am - 2:28 pm

PHX

ORD

3h 43mnonstop

$260United Airlines

Thu, Nov 26 - Sat, Nov 28

1:05 pm - 6:09 pm

ORD

PHX

6h 04m

1 stop

6:20 pm - 10:56 pm

PHX

ORD

3h 36mnonstop

$261United Airlines

Tue, Aug 4 - Fri, Aug 7

1:30 pm - 3:19 pm

ORD

PHX

3h 49mnonstop

4:12 pm - 12:45 am

PHX

ORD

6h 33m

1 stop

$262United Airlines

Tue, Aug 25 - Wed, Aug 26

1:30 pm - 3:20 pm

ORD

PHX

3h 50mnonstop

2:19 pm - 7:58 pm

PHX

ORD

3h 39mnonstop

$263United Airlines

Sat, Oct 10 - Tue, Oct 13

3:40 pm - 5:35 pm

ORD

PHX

3h 55mnonstop

9:00 am - 2:44 pm

PHX

ORD

3h 44mnonstop

$267United Airlines

Thu, Aug 6 - Wed, Aug 12

9:00 pm - 10:54 pm

ORD

PHX

3h 54mnonstop

2:19 pm - 7:58 pm

PHX

ORD

3h 39mnonstop

$268United Airlines

Mon, Sep 7 - Thu, Sep 10

9:12 am - 11:08 am

ORD

PHX

3h 56mnonstop

3:19 pm - 10:46 pm

PHX

ORD

5h 27m

1 stop

$269United 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 March, where the average cost of round-trip tickets is $395 and $384 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 ($342 on average), Prem Economy Class ($755 on average), Business Class ($1,186 on average) and First Class ($1,079 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	$128
Average price round-trip	$377
Good deal one-way	$517

Best time to beat the crowds with an average 16% drop in price.

Most popular time to fly with an average 19% 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 $340 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 $245 for a return flight and $122 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 36 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 $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 $144 on average. If possible, try to avoid the most expensive months of March and August, where tickets cost $245 and $296 respectively.

7.4

Good9,980 verified ratings

7.7Boarding

7.1Entertainment

8.1Crew

7.3Comfort

6.7Food

6.0 Okay

Karin, Jul 2026

SFO

OGG

Too cold in the aircraft

8.0 Very good

Cheryl, Jul 2026

SFO

SBP

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

8.0 Very good

Todd, Jul 2026

DEN

STL

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

10.0 Wonderful

Todd, Jul 2026

PDX

DEN

Great!

4.0 Mediocre

Verified traveler, Jul 2026

MIA

SFO

There was a piece of plastic baked into my buttermilk biscuit! I have a pictures. The flight attendants in first class were really apologetic, and tried to rectify the situation. I I am very appreciative that they were able to give me some packets of pretzels and gummy bears. I understand they don't personally handle the food until warming it up so I know it wasn't their fault. I don't know whether it was a newer aircraft, or different food packaging, but I was happy that when the food was being warmed up - it didn't smell like plastic. Jokes on me with finding plastic in my food.

2.0 Poor

Steph, Jul 2026

MUC

IAD

The flight was canceled. I couldn't get on another flight. Meal voucher wouldn't work. The whole experience was a clusterfuck.

4.0 Mediocre

Mark, Jul 2026

ORD

ZRH

We were forced to eat vegetarian food because non veg food ran out. The breakfast was mediocre.

10.0 Wonderful

Gonzalez, Jul 2026

ORD

YUL

Nice work

8.0 Very good

Gonzalez, Jul 2026

IAH

ORD

Very nice fly

8.0 Very good

Verified traveler, Jul 2026

EWR

LIM

Better meals. Chicken was horrible

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

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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?

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

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