Frontier Airlines Phoenix to Denver Flights

Return flight: Denver – Phoenix
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Cheapflightsplus.com will find cheap Frontier Airlines flights from Phoenix to Denver. Compare airline ticket prices and book air tickets starting from $115 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 august: one-way - $115, two-way – $197.
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Cheap Flights from Phoenix to Denver by Frontier Airlines

Look at the list of plane tickets for the most connecting flights by Frontier Airlines, their prices start from $115. There’re no direct flights. The fastest connecting flight – 6h 42m.
Price Departure Arrival Flight Time Airline Flight
from $115
Find flight
8:00 am
Phoenix
Sky Harbor Intl
 3:42 pm
Denver
Denver International
 6h 42m
layover
2h 47m - San Diego
 Frontier Airlines
F91571
F94928
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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 08/02/2025
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
8:00 am — 3:42 pm
6:30 am — 7:44 am F91571 Frontier Airlines
Phoenix — San Diego
2h 47m stop
11:21 am — 3:00 pm F94928 Frontier Airlines
San Diego — Denver
6h 42m
including layover
Find flight
from$115
*Departure and arrival times are local. Last updated on 08/02/2025

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 8:00 am to 8:00 am. Nonstop flight is 6h 42m. The time difference between Phoenix and Denver is 0h.

  • The fastest flight 6h 42m
  • Average flight time 6h 42m
  • The earliest flight 8:00 am
  • The latest flight 8:00 am
  • Distance 603 ml

The cheapest months for traveling to Denver are july (from 115 $), june (from 130 $).

The cheapest flight by Frontier Airlines that our users were able to find is $115. This airfare is economy class on one-way F91571 flight for July 16, 2025 leaving Sky Harbor Intl in Phoenix at 8:00 am, it includes all taxes and additional fees.

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Frontier Airlines Airplanes on the Route

List of the most popular Frontier Airlines airplanes flying from Phoenix to Denver:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 5 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 1 direct flights every day from Phoenix. Airlines and fares are below:

  • UA - United Airlines
    from $96
    Find
See more direct flights

Connecting Flights

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

  • AS - Alaska Airlines
    from $171
    Find
  • HA - Hawaiian Airlines
    from $207
    Find
  • UA - United Airlines
    from $204
    Find
  • KG - Aerogaviota
    from $457
    Find
  • NK - Spirit Airlines
    from $332
    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.

    To find a plane ticket, please select dates.

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