Frontier Airlines Phoenix to Denver Flights

Return flight: Denver – Phoenix

Cheapflightsplus.com will find cheap Frontier Airlines flights from Phoenix to Denver. Compare airline ticket prices and book air tickets starting from $44 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of Frontier Airlines, arrivals and departure details below.

Find Cheap Airfare Phoenix (AZ) — Denver (CO) by Frontier Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in june: one-way - $44, two-way – $75.
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
6:25 pm — 9:18 pm
6:25 pm — 9:18 pm F91820 Frontier Airlines
Phoenix — Denver
1h 53m
Find flight
from$61
7:18 am — 10:12 am
7:18 am — 10:12 am F91376 Frontier Airlines
Phoenix — Denver
1h 54m
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from$44
12:45 pm — 10:26 pm
7:10 am — 8:51 am F91440 Frontier Airlines
Phoenix — Salt Lake City
5h 14m stop
6:29 pm — 8:07 pm F94252 Frontier Airlines
Salt Lake City — Denver
8h 41m
including layover
Find flight
from$84
12:55 pm — 4:00 am
+1 day
11:19 am — 11:36 am F93483 Frontier Airlines
Phoenix — Las Vegas
10h 47m stop
6:30 am — 9:38 am F91994 Frontier Airlines
Las Vegas — Denver
14h 5m
including layover
Find flight
from$51
1:00 pm — 10:02 am
+1 day
1:00 pm — 2:13 pm F91571 Frontier Airlines
Phoenix — San Diego
16h 12m stop
6:25 am — 10:02 am F92818 Frontier Airlines
San Diego — Denver
20h 2m
including layover
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from$90
2:11 pm — 2:19 pm
+1 day
2:11 pm — 7:41 pm F91736 Frontier Airlines
Phoenix — Chicago
16h 54m stop
12:35 pm — 2:19 pm F92209 Frontier Airlines
Chicago — Denver
23h 8m
including layover
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from$81
3:08 pm — 7:14 am
+1 day
11:59 pm — 6:57 am F94672 Frontier Airlines
Phoenix — Detroit
7h 48m stop
6:00 am — 7:15 am F92211 Frontier Airlines
Detroit — Denver
15h 6m
including layover
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from$73
3:50 pm — 10:22 pm
3:45 pm — 6:31 pm F92524 Frontier Airlines
Phoenix — Salt Lake City
2h 12m stop
2:03 pm — 3:38 pm F93220 Frontier Airlines
Salt Lake City — Denver
5h 32m
including layover
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from$69
4:31 pm — 8:56 am
+1 day
2:27 pm — 4:15 pm F92524 Frontier Airlines
Phoenix — Salt Lake City
12h 5m stop
6:15 am — 8:01 am F93862 Frontier Airlines
Salt Lake City — Denver
15h 25m
including layover
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from$75
4:57 pm — 7:36 am
+1 day
5:02 pm — 9:46 pm F94184 Frontier Airlines
Phoenix — Houston
8h 18m stop
6:00 am — 7:50 am F93229 Frontier Airlines
Houston — Denver
13h 39m
including layover
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from$84
5:22 pm — 8:55 am
+1 day
5:22 pm — 8:05 pm F93872 Frontier Airlines
Phoenix — Salt Lake City
11h 15m stop
7:20 am — 8:55 am F93862 Frontier Airlines
Salt Lake City — Denver
14h 33m
including layover
Find flight
from$84
5:22 pm — 4:26 pm
+1 day
5:22 pm — 8:05 pm F93872 Frontier Airlines
Phoenix — Salt Lake City
18h 40m stop
2:45 pm — 4:26 pm F93982 Frontier Airlines
Salt Lake City — Denver
22h 4m
including layover
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from$84
6:00 am — 11:12 am
9:00 am — 11:49 am F91440 Frontier Airlines
Phoenix — Salt Lake City
53m stop
2:45 pm — 4:26 pm F93982 Frontier Airlines
Salt Lake City — Denver
4h 12m
including layover
Find flight
from$69
7:25 am — 7:40 am
+1 day
7:25 am — 12:17 pm F91704 Frontier Airlines
Phoenix — Houston
17h 43m stop
6:00 am — 7:40 am F93229 Frontier Airlines
Houston — Denver
23h 15m
including layover
Find flight
from$73
8:00 am — 3:59 am
+1 day
6:15 am — 6:31 am F93983 Frontier Airlines
Phoenix — Las Vegas
15h 40m stop
6:05 am — 9:14 am F91994 Frontier Airlines
Las Vegas — Denver
18h 59m
including layover
Find flight
from$72
8:02 am — 7:18 pm
8:02 am — 2:51 pm F94240 Frontier Airlines
Phoenix — Covington
3h 26m stop
6:06 pm — 7:19 pm F93285 Frontier Airlines
Covington — Denver
10h 16m
including layover
Find flight
from$66
9:15 am — 10:20 pm
9:00 am — 11:49 am F91440 Frontier Airlines
Phoenix — Salt Lake City
8h 42m stop
8:43 pm — 10:26 pm F93220 Frontier Airlines
Salt Lake City — Denver
12h 5m
including layover
Find flight
from$73
*Departure and arrival times are local. Last updated on 06/06/2025

Flight Information

There are 2 flights by Frontier Airlines from Phoenix to Denver every week with departures from Sky Harbor Intl, Phoenix-Deer Valley, Luke AFB, Scottsdale Municipal, Williams Gateway. All flights arrive at Denver International and Arapahoe Co.

Departures start from 12:33 pm to 9:15 am. Nonstop flight is 1h 53m. The time difference between Phoenix and Denver is 0h.

  • The fastest flight 1h 53m
  • Average flight time 1h 54m
  • The earliest flight 12:33 pm
  • The latest flight 9:15 am
  • Distance 603 ml

The cheapest months for traveling to Denver are june (from 59 $), november (from 68 $), july (from 76 $).

The most expensive and popular months are december (from 299 $), february (from 104 $), january (from 104 $).

The cheapest flight by Frontier Airlines that our users were able to find is $44. This airfare is economy class on one-way F91376 flight for June 29, 2025 leaving Sky Harbor Intl in Phoenix at 7:18 am, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Frontier Airlines there are other 8 airline carriers between Phoenix and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from Phoenix to Denver.

Nonstop flights

There are 11 direct flights every day from Phoenix. Airlines and fares are below:

  • UA - United Airlines
    from $69
    Find
See more direct flights

Connecting Flights

List of flights with layovers (1 and more stops):

  • AS - Alaska Airlines
    from $63
    Find
  • SY - Sun Country Airlines
    from $103
    Find
  • HA - Hawaiian Airlines
    from $55
    Find
  • LF - flynordic
    from $88
    Find
  • UA - United Airlines
    from $150
    Find
  • KG - Aerogaviota
    from $177
    Find
  • G4 - Allegiant Air
    from $74
    Find
  • NK - Spirit Airlines
    from $126
    Find
See more connecting flights

How to book an air ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected airfare.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

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