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 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 $328 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 $198 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 24 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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

$69 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

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

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One-way

Last minute

Direct

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

sáb., jul. 18 - sáb., jul. 25

9:23 pm - 11:17 pm

ORD

PHX

3h 54mnonstop

2:41 pm - 8:23 pm

PHX

ORD

3h 42mnonstop

$137United Airlines

sáb., mar. 7 - mié., mar. 11

8:10 pm - 11:18 pm

ORD

PHX

4h 08mnonstop

6:15 am - 11:44 am

PHX

ORD

3h 29mnonstop

$173United Airlines

sáb., abr. 4 - mar., abr. 7

8:10 pm - 10:15 pm

ORD

PHX

4h 05mnonstop

6:00 pm - 11:30 pm

PHX

ORD

3h 30mnonstop

$177United Airlines

sáb., jul. 18 - sáb., jul. 25

5:45 pm - 10:19 pm

ORD

PHX

6h 34m

1 stop

5:46 pm - 11:28 pm

PHX

ORD

3h 42mnonstop

$179United Airlines

sáb., abr. 4 - vie., abr. 10

7:20 am - 9:22 am

ORD

PHX

4h 02mnonstop

3:30 pm - 10:54 pm

PHX

ORD

5h 24m

1 stop

$187United Airlines

sáb., mar. 7 - lun., mar. 16

8:10 pm - 11:18 pm

ORD

PHX

4h 08mnonstop

6:15 am - 11:44 am

PHX

ORD

3h 29mnonstop

$193United Airlines

sáb., mar. 7 - sáb., mar. 14

8:10 pm - 11:18 pm

ORD

PHX

4h 08mnonstop

4:30 pm - 11:52 pm

PHX

ORD

5h 22m

1 stop

$195United Airlines

sáb., abr. 25 - mié., abr. 29

9:10 am - 11:20 am

ORD

PHX

4h 10mnonstop

2:28 pm - 8:01 pm

PHX

ORD

3h 33mnonstop

$197United Airlines

mar., mar. 10 - mar., mar. 17

8:10 pm - 10:18 pm

ORD

PHX

4h 08mnonstop

4:30 pm - 11:52 pm

PHX

ORD

5h 22m

1 stop

$207United Airlines

vie., abr. 3 - lun., abr. 6

8:10 pm - 10:15 pm

ORD

PHX

4h 05mnonstop

11:59 pm - 5:29 am

PHX

ORD

3h 30mnonstop

$217United Airlines

Useful Info

Low season	August
High season	March
Cheapest flight	$69
Average price round-trip	$333

Best time to beat the crowds with an average 9% drop in price.

Most popular time to fly with an average 18% 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 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 $328 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 $198 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 $106 for a return flight and $43 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 24 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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 respectively.

7.4

Good9,263 verified ratings

7.7Boarding

8.1Crew

7.1Entertainment

6.6Food

7.3Comfort

4.0 Mediocre

Christine, Feb 2026

TPA

EWR

Plane outlets in my row not working to charge phone. Staff response was, well it should be. Plug into seed for volume not working well. Had to find the sweet spot for plug in or it would shut off and on.

8.0 Very good

Verified traveler, Feb 2026

IAD

HND

Good

6.0 Okay

rob, Feb 2026

IAD

YYZ

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

8.0 Very good

rob, Feb 2026

MCI

IAD

Fine not above and beyond as I had a connection that was delayed due to maintenance

10.0 Wonderful

Payton, Feb 2026

MIA

ZRH

Everything was amazing!

10.0 Wonderful

Bill, Feb 2026

IAH

LAX

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

4.0 Mediocre

Vicky, Feb 2026

LAX

SYD

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

4.0 Mediocre

Charles, Feb 2026

AMS

EWR

Airport experience at Newark was not great. Only one gate open at immigration for US passports when multiple international flights arriving at the same time. Then having to take a train and a bus to different terminal only to have to clear security again, after I had already gone through at my initial departure location. Older plane, no entertainment screens available, and for economy plus, seat was very uncomfortable. Crew was friendly and this leg of my flight was on-time, even though I arrived later than initially scheduled due to 1st flight being over 2 hours delayed and missing my original connection.

2.0 Poor

Piers, Feb 2026

EWR

DXB

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

6.0 Okay

Piers, Feb 2026

PHX

EWR

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

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

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CHI - PHX

$69 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 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 $328 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 $198 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 $106 for a return flight and $43 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 24 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 September, where plane tickets cost $142 on average. If possible, try to avoid the most expensive months of December and August, where tickets cost $231 and $309 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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