Frontier Airlines Denver to San Diego Flights

Return flight: San Diego – Denver

Cheapflightsplus.com will find cheap Frontier Airlines flights from Denver to San Diego. Compare airline ticket prices and book air tickets starting from $27 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 Denver (CO) — San Diego (CA) 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 - $27, two-way – $46.
Direct flights
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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
10:29 pm — 11:59 pm
10:29 pm — 11:59 pm F92421 Frontier Airlines
Denver — San Diego
2h 30m
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from$27
10:29 pm — 11:50 pm
10:29 pm — 11:50 pm F92711 Frontier Airlines
Denver — San Diego
2h 21m
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from$44
6:10 pm — 7:39 pm
6:10 pm — 7:39 pm F94989 Frontier Airlines
Denver — San Diego
2h 29m
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from$44
9:44 am — 11:10 am
9:44 am — 11:10 am F92817 Frontier Airlines
Denver — San Diego
2h 26m
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from$45
11:34 am — 10:24 am
+1 day
9:40 am — 11:26 am F94721 Frontier Airlines
Denver — Salt Lake City
20h 20m stop
9:29 am — 10:26 am F91901 Frontier Airlines
Salt Lake City — San Diego
23h 50m
including layover
Find flight
from$68
12:05 pm — 6:37 pm
9:44 am — 10:51 am F91993 Frontier Airlines
Denver — Las Vegas
4h 6m stop
5:01 pm — 6:26 pm F91465 Frontier Airlines
Las Vegas — San Diego
7h 32m
including layover
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from$87
12:05 pm — 11:37 am
+1 day
9:44 am — 10:51 am F91993 Frontier Airlines
Denver — Las Vegas
21h 2m stop
10:35 am — 11:56 am F91469 Frontier Airlines
Las Vegas — San Diego
24h 32m
including layover
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from$102
2:37 pm — 6:37 pm
1:20 pm — 2:31 pm F92349 Frontier Airlines
Denver — Las Vegas
1h 28m stop
5:52 pm — 7:10 pm F91465 Frontier Airlines
Las Vegas — San Diego
5h
including layover
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from$63
2:37 pm — 11:37 am
+1 day
1:33 pm — 2:39 pm F92349 Frontier Airlines
Denver — Las Vegas
18h 24m stop
10:35 am — 11:56 am F91469 Frontier Airlines
Las Vegas — San Diego
22h
including layover
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from$78
3:20 pm — 11:48 pm
3:20 pm — 6:36 pm F92550 Frontier Airlines
Denver — Dallas
4h 4m stop
10:40 pm — 11:48 pm F91425 Frontier Airlines
Dallas — San Diego
9h 28m
including layover
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from$70
5:51 pm — 11:55 am
+1 day
5:46 pm — 6:55 pm F94967 Frontier Airlines
Denver — Las Vegas
15h 39m stop
10:35 am — 11:56 am F91469 Frontier Airlines
Las Vegas — San Diego
19h 4m
including layover
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from$70
6:10 pm — 6:19 pm
+1 day
5:41 pm — 6:50 pm F94967 Frontier Airlines
Denver — Las Vegas
21h 41m stop
5:01 pm — 6:26 pm F91465 Frontier Airlines
Las Vegas — San Diego
25h 9m
including layover
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from$64
7:00 am — 11:17 am
10:51 am — 12:50 pm F91229 Frontier Airlines
Denver — San Francisco
50m stop
8:04 am — 9:45 am F94306 Frontier Airlines
San Francisco — San Diego
5h 17m
including layover
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from$62
7:00 am — 10:24 am
4:00 pm — 5:39 pm F93861 Frontier Airlines
Denver — Salt Lake City
57m stop
9:29 am — 10:26 am F91901 Frontier Airlines
Salt Lake City — San Diego
4h 24m
including layover
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from$63
8:22 pm — 9:13 am
+1 day
8:31 pm — 0:10 am F93172 Frontier Airlines
Denver — Chicago
6h 58m stop
1:39 pm — 3:59 pm F91855 Frontier Airlines
Chicago — San Diego
13h 51m
including layover
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from$68
8:31 pm — 3:59 pm
+1 day
8:21 pm — 11:59 pm F93174 Frontier Airlines
Denver — Chicago
13h 29m stop
1:56 pm — 4:08 pm F91855 Frontier Airlines
Chicago — San Diego
20h 28m
including layover
Find flight
from$68
9:10 am — 3:11 pm
7:30 am — 8:34 am F91375 Frontier Airlines
Denver — Phoenix
3h 33m stop
3:05 pm — 4:22 pm F92083 Frontier Airlines
Phoenix — San Diego
7h 1m
including layover
Find flight
from$63
*Departure and arrival times are local. Last updated on 06/01/2025

Flight Information

There are 4 flights by Frontier Airlines from Denver to San Diego every week with departures from Denver International and Arapahoe Co. All flights arrive at 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.

Departures start from 10:18 am to 9:44 am. Nonstop flight is 2h 21m. The time difference between Denver and San Diego is 1h.

  • The fastest flight 2h 21m
  • Average flight time 2h 28m
  • The earliest flight 10:18 am
  • The latest flight 9:44 am
  • Distance 852 ml

The cheapest months for traveling to San Diego are february (from 37 $), june (from 37 $), january (from 51 $).

The most expensive and popular months are october (from 97 $), december (from 83 $), july (from 81 $).

The cheapest flight by Frontier Airlines that our users were able to find is $27. This airfare is economy class on one-way F92421 flight for June 7, 2025 leaving Denver International in Denver at 10:29 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides Frontier Airlines there are other 6 airline carriers between Denver and San Diego. Please review schedules and prices from the most popular airlines to find the best airfare deals from Denver to San Diego.

Nonstop flights

There are 19 direct flights every day from Denver. Airlines and fares are below:

  • from $82
    Find
  • AS - Alaska Airlines
    from $63
    Find
  • HA - Hawaiian Airlines
    from $60
    Find
See more direct flights

Connecting Flights

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

  • from $93
    Find
  • AS - Alaska Airlines
    from $87
    Find
  • SY - Sun Country Airlines
    from $120
    Find
  • HA - Hawaiian Airlines
    from $80
    Find
  • MX - Mexicana
    from $408
    Find
  • G4 - Allegiant Air
    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.

    To find a plane ticket, please select dates.

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