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 8 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 $201 return. The next cheapest options are Alaska Airlines and Spirit Airlines, with return flights costing on average $216 and $220 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 $44. The most expensive day is generally Saturday, where the average price is around $73.

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 March, where tickets cost $151 and $168 respectively.

$81 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

Mon, Nov 3 - Thu, Nov 6

8:30 am - 11:23 amMDW-PHX

3h 53mnonstop

12:58 pm - 5:22 pmPHX-MDW

3h 24mnonstop

$160Frontier

Find Deal

Mon, Nov 3 - Thu, Nov 6

3:30 pm - 6:34 pmORD-PHX

4h 04mnonstop

8:08 pm - 12:43 amPHX-ORD

3h 35mnonstop

$160Frontier

Find Deal

Sat, Nov 1 - Sun, Nov 2

3:57 pm - 5:50 pmMDW-PHX

3h 53mnonstop

12:58 pm - 5:22 pmPHX-MDW

3h 24mnonstop

$161Frontier

Find Deal

Sat, Nov 1 - Tue, Nov 11

6:30 am - 3:18 pmORD-PHX

10h 48m1 stop

3:02 pm - 7:42 pmPHX-ORD

3h 40mnonstop

$161Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 8

7:47 pm - 8:06 amMDW-PHX

37h 19m2 stops

10:29 am - 2:52 pmPHX-MDW

3h 23mnonstop

$162Frontier

Find Deal

Thu, Oct 30 - Mon, Nov 3

4:30 pm - 6:34 pmORD-PHX

4h 04mnonstop

8:08 pm - 12:43 amPHX-ORD

3h 35mnonstop

$162Frontier

Find Deal

Fri, Dec 5 - Mon, Dec 8

6:15 am - 9:19 amMDW-PHX

4h 04mnonstop

10:36 pm - 9:17 amPHX-MDW

33h 41m2 stops

$163Frontier

Find Deal

Wed, Nov 5 - Tue, Nov 11

6:05 pm - 7:33 pmORD-PHX

26h 28m1 stop

3:02 pm - 7:42 pmPHX-ORD

3h 40mnonstop

$163Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

9:00 am - 11:54 amMDW-PHX

3h 54mnonstop

10:53 pm - 11:30 amPHX-MDW

11h 37m1 stop

$164Frontier

Find Deal

Thu, Nov 13 - Sun, Nov 16

3:30 pm - 6:34 pmORD-PHX

4h 04mnonstop

10:53 pm - 12:15 amPHX-ORD

24h 22m1 stop

$164Frontier

Find Deal

Useful Info

Low season	August
High season	March
Cheapest flight	$81
Average price round-trip	$277
Good deal round-trip	$205

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 28% increase in price.

Flight from Chicago Midway 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 8 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 $201 return. The next cheapest options are Alaska Airlines and Spirit Airlines, with return flights costing on average $216 and $220 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 $138 for a return flight and $83 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 $44. The most expensive day is generally Saturday, where the average price is around $73.
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 March, where tickets cost $151 and $168 respectively.

5.8

Fair3,131 verified ratings

4.6Food

5.5Comfort

6.1Boarding

4.4Entertainment

6.7Crew

Pros +

Cons -

Aside from this probably one time deal. (in 1257 reviews)
On the ticket it said checked bag. (in 1044 reviews)

Show reviews that mention

8.0 Very good

Sean, Oct 2025

BWI-ATL

Boarding was on time and plane departed as scheduled. There are obviously no amenities (food, drink, entertainment) on Frontier, but there also didn't seem to be any issues with luggage space either.

8.0 Very good

Sean, Oct 2025

ATL-BWI

Inbound plane was on time and flight departed on time with no issues while boarding.

10.0 Wonderful

Greg, Oct 2025

PAE-DEN

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

2.0 Poor

Verified traveler, Oct 2025

DFW-SAN

i was unable to check in the flight. refund requested

10.0 Wonderful

Verified traveler, Oct 2025

CLE-FLL

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

10.0 Wonderful

Ann, Oct 2025

DEN-PHX

Nothing

10.0 Wonderful

Ann, Oct 2025

BNA-DEN

Great

4.0 Mediocre

Verified traveler, Oct 2025

ORD-PHX

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

6.0 Okay

R, Oct 2025

BWI-MDW

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

6.0 Okay

Verified traveler, Oct 2025

ATL-ORD

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

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

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CHI - PHX

$81 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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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.

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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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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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