Frontier Airlines San Diego to Denver Flights

Return flight: Denver – San Diego
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Cheapflightsplus.com will find cheap Frontier Airlines flights from San Diego to Denver. Compare airline ticket prices and book air tickets starting from $169 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 San Diego (CA) — 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 september: one-way - $169, two-way – $290.
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Cheap Flights from San Diego to Denver by Frontier Airlines

Look at the list of plane tickets for the most connecting flights by Frontier Airlines, their prices start from $169. There’re no direct flights. The fastest connecting flight – 11h 45m.
Price Departure Arrival Flight Time Airline Flight
from $169
Find flight
9:30 pm
San Diego
San Diego
 10:15 am+1 день
Denver
Denver International
 11h 45m
layover
8h 18m - Phoenix
 Frontier Airlines
F91572
F91376
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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 08/27/2025
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
9:30 pm — 10:15 am
+1 day
9:30 pm — 11:00 pm F91572 Frontier Airlines
San Diego — Phoenix
8h 18m stop
7:18 am — 10:15 am F91376 Frontier Airlines
Phoenix — Denver
11h 45m
including layover
Find flight
from$169
9:30 pm — 3:05 pm
+1 day
9:30 pm — 11:00 pm F91572 Frontier Airlines
San Diego — Phoenix
8h stop
7:00 am — 8:16 am F93983 Frontier Airlines
Phoenix — Las Vegas
3h 36m stop
11:52 am — 3:05 pm F92016 Frontier Airlines
Las Vegas — Denver
16h 35m
including layover
Find flight
from$315
*Departure and arrival times are local. Last updated on 08/27/2025

Flight Information

There are 3 flights by Frontier Airlines from San Diego to Denver every week with departures from San Diego, AFB, Golden Triangle Reg., Lowndes County, San Diego Regional, El Cajon, Montgomery Field, Miramar NAS, North Island NAS, Brown Field Municipal, Gillespie Field. All flights arrive at Denver International and Arapahoe Co.

Departures start from 9:30 pm to 9:30 pm. Nonstop flight is 11h 45m. The time difference between San Diego and Denver is 1h.

  • The fastest flight 11h 45m
  • Average flight time 14h 10m
  • The earliest flight 9:30 pm
  • The latest flight 9:30 pm
  • Distance 852 ml

The cheapest months for traveling to Denver are july (from 169 $), august (from 315 $).

The cheapest flight by Frontier Airlines that our users were able to find is $169. This airfare is economy class on one-way F91572 flight for August 15, 2025 leaving San Diego in San Diego at 9:30 pm, 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 San Diego to Denver:

Other Popular Airlines on the Route

Besides Frontier Airlines there are other 5 airline carriers between San Diego and Denver. Please review schedules and prices from the most popular airlines to find the best airfare deals from San Diego to Denver.

Nonstop flights

There are 4 direct flights every day from San Diego. Airlines and fares are below:

See more direct flights

Connecting Flights

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

  • UA - United Airlines
    from $160
    Find
  • AS - Alaska Airlines
    from $179
    Find
  • HA - Hawaiian Airlines
    from $349
    Find
  • AM - Aeromexico
    from $642
    Find
  • NK - Spirit Airlines
    from $252
    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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