Frontier Airlines San Diego to Denver Flights

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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 $122 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 august: one-way - $122, two-way – $209.

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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 $122. There’re no direct flights. The fastest connecting flight – 11h 45m.

Price	Departure	Arrival	Flight Time	Airline	Flight
from $122 Find flight	9:30 pm San Diego San Diego	11:23 pm+1 день Denver Denver International	24h 53m layover 21h 21m - Phoenix	Frontier Airlines	F91572 F92142
from $150 Find flight	8:31 am San Diego San Diego	8:20 am+1 день Denver Denver International	22h 49m layover 17h 23m - Austin	Frontier Airlines	F91878 F91815
from $174 Find flight	1:12 pm San Diego San Diego	10:15 am+1 день Denver Denver International	20h 3m layover 16h 36m - Phoenix	Frontier Airlines	F94578 F91376

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*Departure and arrival times are local. Prices are for one-way flights. Information refreshed on 08/06/2025

Frontier Airlines Flight Schedule San Diego to Denver

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	Flight Details	Flight Time	Price
1:12 pm — 10:15 am +1 day	1:12 pm — 2:42 pm F94578 Frontier Airlines San Diego — Phoenix 16h 36m stop 7:18 am — 10:15 am F91376 Frontier Airlines Phoenix — Denver	20h 3m including layover	Find flight from$174
8:31 am — 8:20 am +1 day	8:31 am — 1:37 pm F91878 Frontier Airlines San Diego — Austin 17h 23m stop 7:00 am — 8:20 am F91815 Frontier Airlines Austin — Denver	22h 49m including layover	Find flight from$150
9:30 pm — 11:23 pm +1 day	9:30 pm — 11:00 pm F91572 Frontier Airlines San Diego — Phoenix 21h 21m stop 8:21 pm — 11:23 pm F92142 Frontier Airlines Phoenix — Denver	24h 53m including layover	Find flight from$122
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$174

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times are local. Last updated on 08/06/2025

Flight Information

There are 5 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 1:12 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 21h 26m
The earliest flight 1:12 pm
The latest flight 9:30 pm
Distance 852 ml

The cheapest months for traveling to Denver are july (from 122 $).

The cheapest flight by Frontier Airlines that our users were able to find is $122. This airfare is economy class on one-way F91572 flight for July 11, 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 4 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:

UA - United Airlines

from $112

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Connecting Flights

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

UA - United Airlines

from $165

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AS - Alaska Airlines

from $185

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HA - Hawaiian Airlines

from $176

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NK - Spirit Airlines

from $237

Find

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How to book an air ticket yourself?

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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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