Frontier's UpFront Plus seats guarantee an empty middle seat for extra comfort.
Frontier offers no in-flight entertainment or Wi-Fi; bring a book or pre-load entertainment.

Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $84 (Expedia) |
One-way from | $45 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $188 |
Good round-trip deal | $137 or less |
Good one-way deal | $83 or less |
Fly from
Fly to
Route
Depart
Return
Price
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Sun 12/21
6:15 am-8:21 am
Nonstop2h 06m
Phoenix Sky Harbor Intl
Sun 1/4
7:00 am-8:55 am
Nonstop1h 55m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Tue 12/2
6:59 pm-11:59 pm
1 stop5h 00m
Phoenix Sky Harbor Intl
Tue 12/9
10:22 am-7:24 pm
1 stop9h 02m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Sat 12/6
7:45 am-9:53 am
Nonstop2h 08m
Phoenix Sky Harbor Intl
Tue 12/9
7:00 am-8:53 am
Nonstop1h 53m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Sat 12/20
6:48 pm-11:53 pm
1 stop5h 05m
Phoenix Sky Harbor Intl
Tue 12/23
4:41 pm-11:59 pm
1 stop7h 18m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Wed 12/24
6:27 pm-11:55 pm
1 stop5h 28m
Phoenix Sky Harbor Intl
Wed 12/31
7:15 am-12:15 pm
1 stop5h 00m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Mon 1/19
6:23 pm-12:44 am
1 stop6h 21m
Phoenix Sky Harbor Intl
Fri 1/23
5:00 pm-10:21 pm
1 stop5h 21m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Wed 12/17
6:59 pm-11:59 pm
1 stop5h 00m
Phoenix Sky Harbor Intl
Mon 1/5
4:41 pm-11:59 pm
1 stop7h 18m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Thu 12/25
6:45 am-1:33 pm
1 stop6h 48m
Phoenix Sky Harbor Intl
Wed 12/31
7:15 am-12:15 pm
1 stop5h 00m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Thu 11/27
12:53 pm-8:22 pm
1 stop7h 29m
Phoenix Sky Harbor Intl
Wed 12/3
2:18 pm-6:58 pm
1 stop4h 40m
DenverPhoenix
DEN - PHX
DENPHX
Denver Intl
Thu 11/27
12:02 pm-5:22 pm
1 stop5h 20m
Phoenix Sky Harbor Intl
Tue 12/2
7:00 am-11:09 am
1 stop4h 09m
| 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 Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Denver to Phoenix Sky Harbor Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, December is the cheapest month in which you can book a flight from Denver to Phoenix Sky Harbor Intl Airport (average of $53). Flying from Denver to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of $97). 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 Denver 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 25% versus a flight in the morning.
Travelers seeking maximum savings on their Denver to Phoenix Sky Harbor Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
About 17% of weekly flights between Denver and Phoenix have experienced delays in the past year, with the average delay time being 132 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, British Airways have had the lowest number of delays on this route, with no flights being classified as delayed.
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Entertainment
Comfort
Boarding
Food
Overall
Crew
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$61 | Average$152 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$140 | Average$282 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$144 | Average$248 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$147 | Average$246 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$196 | Average$297 | FlexibilityNo cancel fee | On-timeN/A |