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 15 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 $199 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $219 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 5 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 Tuesday, when prices are around $36. The most expensive day is generally Saturday, where the average price is around $71.

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 $198 respectively.

$56 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

Tue, Mar 31 - Wed, Apr 1

7:00 am - 9:14 am

ORD

PHX

4h 14mnonstop

11:41 am - 11:50 pm

PHX

ORD

10h 09m

1 stop

$110Frontier

Sun, Feb 15 - Fri, Feb 20

12:56 pm - 4:09 pm

ORD

PHX

4h 13mnonstop

3:42 pm - 8:17 pm

PHX

ORD

3h 35mnonstop

$111Frontier

Sun, Feb 1 - Thu, Feb 12

7:30 am - 10:42 am

MDW

PHX

4h 12mnonstop

7:23 pm - 11:41 pm

PHX

MDW

3h 18mnonstop

$112Frontier

Tue, Mar 3 - Tue, Mar 10

9:15 am - 12:29 pm

ORD

PHX

4h 14mnonstop

10:24 am - 3:59 pm

PHX

ORD

3h 35mnonstop

$112Frontier

Fri, Feb 20 - Fri, Feb 27

7:45 am - 8:52 pm

MDW

PHX

14h 07m

1 stop

7:23 pm - 11:41 pm

PHX

MDW

3h 18mnonstop

$113Frontier

Tue, Feb 17 - Thu, Feb 19

8:10 am - 11:24 am

ORD

PHX

4h 14mnonstop

10:19 am - 2:54 pm

PHX

ORD

3h 35mnonstop

$113Frontier

Tue, Feb 17 - Wed, Feb 25

8:10 am - 11:24 am

ORD

PHX

4h 14mnonstop

5:40 pm - 10:26 am

PHX

ORD

15h 46m

1 stop

$114Frontier

Sat, Feb 28 - Sat, Mar 7

9:15 am - 4:32 pm

MDW

PHX

8h 17m

1 stop

6:24 pm - 10:41 pm

PHX

MDW

3h 17mnonstop

$115Frontier

Sun, Feb 8 - Thu, Feb 12

6:41 am - 9:50 am

ORD

PHX

4h 09mnonstop

2:34 pm - 5:26 pm

PHX

ORD

25h 52m

1 stop

$115Frontier

Sat, Feb 28 - Thu, Mar 5

9:15 am - 4:32 pm

MDW

PHX

8h 17m

1 stop

7:33 pm - 11:51 pm

PHX

MDW

3h 18mnonstop

$116Frontier

Useful Info

Low season	June
High season	March
Cheapest flight	$56
Average price round-trip	$292
Good deal round-trip	$248

Best time to beat the crowds but there is an average 1% increase in price.

Most popular time to fly with an average 24% 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 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 15 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 $199 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $219 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 $79 for a return flight and $33 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 5 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 Tuesday, when prices are around $36. The most expensive day is generally Saturday, where the average price is around $71.
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 $198 respectively.

5.7

Fair3,056 verified ratings

6.0Boarding

4.6Food

6.6Crew

4.3Entertainment

5.5Comfort

4.0 Mediocre

chris, Jan 2026

PHL

TPA

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

10.0 Wonderful

Maegan, Jan 2026

DEN

DFW

Wonderful and friendly very helpful

2.0 Poor

Verified traveler, Jan 2026

PHX

DEN

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

2.0 Poor

Verified traveler, Jan 2026

ORD

DFW

The plane was straight dogshit

2.0 Poor

David, Jan 2026

MCO

JFK

Cancelled flight and gave no explanation or solution

6.0 Okay

Noah, Jan 2026

LAX

PDX

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

2.0 Poor

Verified traveler, Jan 2026

MIA

ATL

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

2.0 Poor

Verified traveler, Jan 2026

DEN

LAX

Baggage fees were as much as the airfare

2.0 Poor

Kellee, Jan 2026

ATL

JFK

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

2.0 Poor

Chris, Jan 2026

MSP

DEN

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

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

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CHI - PHX

$56 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?

Generally, when trying to get a below average price for your ticket, try to book around 15 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 $199 return. The next cheapest options are Spirit Airlines and Alaska Airlines, with return flights costing on average $219 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 $79 for a return flight and $33 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 5 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 Tuesday, when prices are around $36. The most expensive day is generally Saturday, where the average price is around $71.

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 $198 respectively.

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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 class types available on flights to Phoenix Sky Harbor Intl Airport

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.

Complete your trip to Phoenix Sky Harbor Intl Airport with a hotel stay or car rental

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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.

Top Frontier flights

The most popular destinations for flights with Frontier according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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