Frontier's UpFront Plus guarantees an empty middle seat in the front two rows.
Frontier charges for carry-on bags; add during booking for a lower fee.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $120 (Frontier) |
One-way from | $68 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $326 |
Good round-trip deal | $206 or less |
Good one-way deal | $123 or less |
Fly from
Fly to
Route
Depart
Return
Price
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 1/29
3:44 pm-11:22 pm
1 stop8h 38m
Phoenix Sky Harbor Intl
Mon 2/2
8:07 pm-2:29 pm
1 stop17h 22m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Sat 1/24
9:00 am-7:25 pm
1 stop11h 25m
Phoenix Sky Harbor Intl
Sat 1/31
3:45 pm-11:37 pm
1 stop6h 52m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Tue 1/6
8:39 am-3:59 pm
1 stop8h 20m
Phoenix Sky Harbor Intl
Tue 1/13
3:45 pm-11:37 pm
1 stop6h 52m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Fri 1/23
3:44 pm-11:22 pm
1 stop8h 38m
Phoenix Sky Harbor Intl
Fri 1/30
11:00 am-11:50 pm
1 stop11h 50m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 1/1
1:35 pm-7:10 pm
1 stop6h 35m
Phoenix Sky Harbor Intl
Sat 1/10
11:59 pm-9:41 am
1 stop8h 42m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Wed 1/14
9:00 am-7:25 pm
1 stop11h 25m
Phoenix Sky Harbor Intl
Sun 1/18
11:41 am-11:37 pm
1 stop10h 56m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 1/29
3:44 pm-11:22 pm
1 stop8h 38m
Phoenix Sky Harbor Intl
Sun 2/1
11:41 am-11:37 pm
1 stop10h 56m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Thu 1/8
3:44 pm-11:22 pm
1 stop8h 38m
Phoenix Sky Harbor Intl
Sun 1/11
8:24 am-11:37 pm
1 stop14h 13m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Tue 2/17
7:55 pm-11:03 pm
Nonstop4h 08m
ChicagoPhoenix
ORD - PHX
ORDPHX
Chicago O'Hare Intl
Wed 1/28
12:55 pm-3:57 pm
Nonstop4h 02m
| 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 Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
The best time to book flights from Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport (average of $71). Flying from Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of $200). 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.
It’s typically best to fly out from Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport at noon. Doing so could potentially save you 22% on the flight price compared to flying in the morning, which is usually more expensive.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
About 16% of weekly flights between Chicago and Phoenix have experienced delays in the past year, with the average delay time being 153 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Tuesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Over the last year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Chicago O'Hare Intl Airport to Phoenix Sky Harbor Intl Airport on Cheapflights.
Las Vegas (LAS) is the most affordable 1-stop option, with an average round-trip price of $200.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 14h 02m.
Flights via Minneapolis (MSP) offer the fastest connection on this route, with an average layover time of 7h 01m.
Food
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Thomas,Dec 2025
SEA - DEN
Food
Entertainment
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Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Boarding
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Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Boarding
Comfort
Overall
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Boarding
Comfort
Overall
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Entertainment
Boarding
Comfort
Overall
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$81 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$221 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$154 | Average$231 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$183 | Average$337 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$184 | Average$336 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$193 | Average$326 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$206 | Average$357 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$213 | Average$317 | FlexibilityNo cancel fee | On-timeN/A |