How far in advance should I book tickets for a flight with Frontier from Chicago to Phoenix Sky Harbor Intl Airport?

Generally, when trying to get a below average price for your ticket, try to book around 14 days before departure. For the cheapest possible price, our data suggests booking 66 days before departure.

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

Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $209 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $221 and $231 respectively.

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

Yes, Frontier does offer direct flights for the route, with around 2 flights per week.

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

On average, the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with Frontier is Monday, when prices are around $45. The most expensive day is generally Saturday, where the average price is around $74.

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

The cheapest month for Frontier flights to Phoenix Sky Harbor Intl Airport from Chicago is generally September, where plane tickets cost $99 on average. If possible, try to avoid the most expensive months of October and December, where tickets cost $171 and $176 respectively.

$75 Cheap Frontier Flights from Chicago to Phoenix Sky Harbor Intl Airport

CHI - PHX

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Flight Deals

Cheap Frontier Flight Deals from Chicago to Phoenix Sky Harbor Intl Airport

Here are some of the best deals found on KAYAK recently from Frontier 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 Frontier flight deals from Chicago to Phoenix Sky Harbor Intl Airport

Fri, Jan 23 - Sun, Jan 25

12:42 pm - 3:55 pm

ORD

PHX

4h 13mnonstop

11:00 am - 3:37 pm

PHX

ORD

3h 37mnonstop

$128Frontier

Sun, Mar 1 - Sat, Mar 7

3:02 pm - 12:28 am

MDW

PHX

10h 26m1 stop

7:00 am - 11:20 am

PHX

MDW

3h 20mnonstop

$129Frontier

Sat, Feb 14 - Sat, Feb 21

1:52 pm - 4:51 pm

ORD

PHX

3h 59mnonstop

8:15 am - 12:47 pm

PHX

ORD

3h 32mnonstop

$129Frontier

Fri, Jan 2 - Thu, Jan 8

8:00 am - 4:48 pm

MDW

PHX

9h 48m1 stop

7:25 am - 11:45 am

PHX

MDW

3h 20mnonstop

$130Frontier

Fri, Jan 16 - Mon, Jan 19

6:30 am - 11:36 pm

ORD

PHX

18h 06m1 stop

6:05 am - 10:43 am

PHX

ORD

3h 38mnonstop

$130Frontier

Mon, Jan 19 - Fri, Jan 23

9:09 pm - 7:19 pm

MDW

PHX

23h 10m1 stop

9:00 am - 3:49 pm

PHX

MDW

5h 49m1 stop

$131Frontier

Fri, Feb 13 - Sun, Feb 15

11:45 am - 2:45 pm

ORD

PHX

4h 00mnonstop

6:00 am - 10:39 am

PHX

ORD

3h 39mnonstop

$131Frontier

Sun, Jan 18 - Sun, Jan 25

8:19 pm - 11:29 pm

MDW

PHX

4h 10mnonstop

6:00 am - 10:19 pm

PHX

MDW

15h 19m1 stop

$132Frontier

Sat, Jan 3 - Sat, Jan 10

3:51 pm - 12:28 am

ORD

PHX

9h 37m1 stop

1:05 pm - 5:41 pm

PHX

ORD

3h 36mnonstop

$132Frontier

Thu, Jan 8 - Thu, Jan 15

6:10 am - 12:28 am

MDW

PHX

19h 18m2 stops

7:30 am - 11:47 am

PHX

MDW

3h 17mnonstop

$133Frontier

Useful Info

Low season	June
High season	March
Cheapest flight	$75
Average price round-trip	$319
Good deal round-trip	$271

Most popular time to fly with an average 29% increase in price.

Flight from Chicago Midway Airport to Phoenix

(avg. price over the last 2 weeks)

or less

When to Book Flights with Frontier 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 Frontier from Chicago to Phoenix Sky Harbor Intl Airport?
Generally, when trying to get a below average price for your ticket, try to book around 14 days before departure. For the cheapest possible price, our data suggests booking 66 days before departure.
Is Frontier the cheapest airline to fly with from Chicago to Phoenix Sky Harbor Intl Airport?
Yes, based on our data, Frontier is the cheapest airline to fly the route with an average price of $209 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $221 and $231 respectively.
What is the cheapest Frontier flight from Chicago to Phoenix Sky Harbor Intl Airport?
In the last 3 days, the lowest price for a flight with Frontier from Chicago to Phoenix Sky Harbor Intl Airport was $91 for a return flight and $40 for a one-way flight.
Does Frontier fly direct to Phoenix Sky Harbor Intl Airport from Chicago?
Yes, Frontier does offer direct flights for the route, with around 2 flights per week.
What’s the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with Frontier?
On average, the cheapest day of the week to fly from Chicago to Phoenix Sky Harbor Intl Airport with Frontier is Monday, when prices are around $45. The most expensive day is generally Saturday, where the average price is around $74.
What’s the cheapest month to fly from Chicago to Phoenix Sky Harbor Intl Airport with Frontier?
The cheapest month for Frontier flights to Phoenix Sky Harbor Intl Airport from Chicago is generally September, where plane tickets cost $99 on average. If possible, try to avoid the most expensive months of October and December, where tickets cost $171 and $176 respectively.

5.8

Fair3,091 verified ratings

6.6Crew

6.0Boarding

5.5Comfort

4.6Food

4.4Entertainment

Pros +

Flight was on time and crew were good (in 763 reviews)

Cons -

On the ticket it said checked bag. (in 1044 reviews)

Show reviews that mention

8.0 Very good

Yordanos, Dec 2025

SJU

PHL

Good- no snacks on a 4+ hour flight is painful but more painful was the lack of WiFi.

2.0 Poor

omnia, Dec 2025

MCO

CLE

Flight got delayed for 5 hours no good explanation was offered ;(

6.0 Okay

Verified traveler, Dec 2025

PHX

SEA

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

2.0 Poor

Daniel, Nov 2025

DEN

ATL

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

8.0 Very good

Jaime, Nov 2025

LAS

SLC

It was excellent everything

4.0 Mediocre

Verified traveler, Nov 2025

LAX

IAH

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

8.0 Very good

Lisa, Nov 2025

PHL

SRQ

Delayed on tarmac and boarding

8.0 Very good

Martha, Nov 2025

MDW

MCO

Better than expected. Staff were friendly and nice on both flights.

2.0 Poor

Justin, Nov 2025

DEN

AUS

Worst experience ever...never fly Frontier again.

2.0 Poor

Verified traveler, Nov 2025

FLL

ATL

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

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

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CHI - PHX

$75 Find Cheap Frontier Flights from Chicago to Phoenix Sky Harbor Intl Airport

Search hundreds of travel sites at once for deals on Frontier flights from Chicago to Phoenix Sky Harbor Intl Airport

Cheap Frontier Flight Deals from Chicago to Phoenix Sky Harbor Intl Airport

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

Recent one-way Frontier flight deals from Chicago to Phoenix Sky Harbor Intl Airport

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

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

Good to know

When to Book Flights with Frontier from Chicago to Phoenix Sky Harbor Intl Airport

FAQs for flying to Phoenix Sky Harbor Intl Airport with Frontier

How far in advance should I book tickets for a flight with Frontier from Chicago to Phoenix Sky Harbor Intl Airport?

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

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

Does Frontier 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 Frontier?

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

Frontier Customer Reviews

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

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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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