Frontier's UpFront Plus seats offer a guaranteed empty middle seat for extra comfort.
Early check-in helps secure your place as Frontier overbooks flights frequently.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $162 (CheapOair) |
One-way from | $84 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $268 |
Good round-trip deal | $183 or less |
Good one-way deal | $114 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Sat 12/13
3:05 pm-6:00 pm
Nonstop3h 55m
Phoenix Sky Harbor Intl
Thu 12/25
9:05 am-1:30 pm
Nonstop3h 25m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 12/11
12:50 pm-3:48 pm
Nonstop3h 58m
Phoenix Sky Harbor Intl
Sun 1/11
3:50 pm-8:22 pm
Nonstop3h 32m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Wed 12/17
3:05 pm-11:59 pm
1 stop9h 54m
Phoenix Sky Harbor Intl
Wed 12/24
12:42 pm-2:37 pm
1 stop24h 55m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Wed 12/31
6:00 am-12:35 pm
1 stop7h 35m
Phoenix Sky Harbor Intl
Tue 1/6
11:59 pm-8:54 am
1 stop7h 55m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Sat 1/24
6:00 am-2:57 pm
1 stop9h 57m
Phoenix Sky Harbor Intl
Sat 1/31
1:55 pm-10:26 pm
1 stop7h 31m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Sat 12/13
6:00 am-12:13 pm
1 stop7h 13m
Phoenix Sky Harbor Intl
Mon 12/15
12:59 am-9:19 am
1 stop7h 20m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Sat 12/13
5:15 am-8:05 am
Nonstop3h 50m
Phoenix Sky Harbor Intl
Tue 12/16
12:55 pm-7:20 pm
1 stop5h 25m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Thu 12/11
1:55 pm-6:00 pm
1 stop5h 05m
Phoenix Sky Harbor Intl
Sun 1/11
5:50 am-10:05 am
Nonstop3h 15m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 12/11
3:05 pm-11:59 pm
1 stop9h 54m
Phoenix Sky Harbor Intl
Tue 12/16
7:56 pm-2:09 pm
1 stop17h 13m
ChicagoPhoenix
MDW - PHX
MDWPHX
Chicago Midway
Sun 12/14
5:30 am-8:25 am
Nonstop3h 55m
Phoenix Sky Harbor Intl
Thu 12/18
8:10 pm-12:25 am
Nonstop3h 15m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
The price you pay for your flight from Chicago to Phoenix Sky Harbor Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, February is the cheapest month in which you can book a flight from Chicago to Phoenix Sky Harbor Intl Airport (average of $83). Flying from Chicago to Phoenix Sky Harbor Intl Airport in June is currently the most expensive (average of $176). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Chicago to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 17% versus a flight at noon.
Travelers seeking maximum savings on their Chicago to Phoenix Sky Harbor Intl Airport flight should consider departing on Friday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Denver (DEN) – chosen by Cheapflights users on 71% of 1-stop itineraries from Chicago to Phoenix Sky Harbor Intl Airport on Cheapflights.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $148.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 5h 42m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 46m.
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
Food
Crew
Comfort
Overall
Boarding
Entertainment
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$92 | Average$209 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$220 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$154 | Average$231 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$183 | Average$354 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$193 | Average$362 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$206 | Average$366 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$236 | Average$337 | FlexibilityNo cancel fee | On-timeN/A |