Frontier's UpFront Plus offers a guaranteed empty middle seat for extra comfort.
Early check-in helps secure your seat due to frequent overbooking.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $134 (Cheapflightsfares) |
One-way from | $78 (Cheapflightsfares) |
Popular in | December |
Cheapest in | January |
Average price | $295 |
Good round-trip deal | $259 or less |
Good one-way deal | $131 or less |
Fly from
Fly to
Route
Depart
Return
Price
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 2/24
8:00 am-12:32 pm
Nonstop3h 32m
Chicago O'Hare Intl
Sat 2/28
1:52 pm-4:51 pm
Nonstop3h 59m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 11/18
7:00 am-6:34 pm
2 stops10h 34m
Chicago O'Hare Intl
Tue 11/25
7:00 am-9:04 pm
1 stop15h 04m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 2/24
6:05 pm-5:04 am
1 stop9h 59m
Chicago O'Hare Intl
Sat 2/28
1:52 pm-4:51 pm
Nonstop3h 59m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Fri 1/30
1:16 pm-11:50 pm
1 stop9h 34m
Chicago O'Hare Intl
Tue 2/3
3:35 pm-11:59 pm
1 stop9h 24m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Mon 11/24
4:40 pm-12:02 am
1 stop6h 22m
Chicago O'Hare Intl
Sat 12/6
4:20 pm-10:51 pm
1 stop7h 31m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Fri 1/23
12:59 am-8:40 am
1 stop6h 41m
Chicago O'Hare Intl
Sat 1/24
3:15 pm-9:56 pm
1 stop7h 41m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Tue 2/24
6:00 am-1:00 pm
1 stop6h 00m
Chicago O'Hare Intl
Sat 2/28
3:45 pm-11:55 pm
1 stop9h 10m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Fri 1/2
7:55 am-12:22 pm
Nonstop3h 27m
Chicago O'Hare Intl
Fri 1/9
8:48 pm-11:50 pm
Nonstop4h 02m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Fri 12/5
12:59 am-10:33 am
1 stop8h 34m
Chicago O'Hare Intl
Fri 12/12
6:45 am-3:49 pm
1 stop10h 04m
PhoenixChicago
PHX - ORD
PHXORD
Phoenix Sky Harbor Intl
Fri 12/12
1:33 pm-12:01 am
1 stop9h 28m
Chicago O'Hare Intl
Sat 12/13
5:30 am-12:13 pm
1 stop7h 43m
| 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 Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport is 39 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, March is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport (average of $100). Flying from Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $192). 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 optimal to fly from Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 57% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport flight should consider departing on Friday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 8% of weekly flights between Phoenix and Chicago have experienced delays in the past year, with the average delay time being 165 minutes.
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Breeze Airways have had the lowest number of delays on this route, with no flights being classified as delayed.
Orlando (MCO) – chosen by Cheapflights users on 50% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to Chicago O'Hare Intl Airport on Cheapflights.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 12h 54m.
Flights via Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 12h 54m.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 8h 21m.
Entertainment
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Mike,Aug 2025
OKC - AUS
Entertainment
Overall
Comfort
Food
Boarding
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Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Overall
Comfort
Food
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$79 | Average$218 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$99 | Average$211 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$162 | Average$355 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$197 | Average$311 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$200 | Average$332 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$205 | Average$344 | FlexibilityNo cancel fee | On-time63% |