Cheap Flights from San Diego, CA to Denver, CO from $38

Return flight: Denver – San Diego

On Cheapflightsplus.com you will find 16 direct and 287 connecting flights from San Diego to Denver. You can compare airfare deals from 7 airlines and multiple travel sites from $38, book and save on cheap plane tickets and last minute offers. Also check out SAN-DEN flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip San Diego to Denver Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $38 (one-way), $65 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from San Diego to Denver. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:41 — 10:12
06:41 — 10:12 F92818 Frontier Airlines
San Diego — Denver
2h 31m
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from$38
06:45 — 10:13
06:45 — 10:13 UA2270 United Airlines
San Diego — Denver
2h 28m
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from$82
08:40 — 12:04
08:40 — 12:04 UA1829 United Airlines
San Diego — Denver
2h 24m
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from$120
08:45 — 12:13
08:45 — 12:13 UA347 United Airlines
San Diego — Denver
2h 28m
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from$106
09:02 — 12:30
09:02 — 12:30 UA2476 United Airlines
San Diego — Denver
2h 28m
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from$82
10:32 — 14:00
10:32 — 14:00 HA6401 Hawaiian Airlines
San Diego — Denver
2h 28m
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from$60
10:32 — 14:00
10:32 — 14:00 AS1068 Alaska Airlines
San Diego — Denver
2h 28m
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from$63
11:17 — 14:45
11:17 — 14:45 UA1337 United Airlines
San Diego — Denver
2h 28m
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from$90
12:45 — 16:13
12:45 — 16:13 UA1220 United Airlines
San Diego — Denver
2h 28m
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from$103
12:52 — 16:20
12:52 — 16:20 UA1483 United Airlines
San Diego — Denver
2h 28m
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from$90
15:37 — 19:10
15:37 — 19:10 HA6408 Hawaiian Airlines
San Diego — Denver
2h 33m
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from$75
15:37 — 19:10
15:37 — 19:10 AS3024 Alaska Airlines
San Diego — Denver
2h 33m
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from$78
16:14 — 19:40
16:14 — 19:40 UA682 United Airlines
San Diego — Denver
2h 26m
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from$120
18:32 — 22:00
18:32 — 22:00 UA519 United Airlines
San Diego — Denver
2h 28m
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from$82
20:19 — 23:47
20:19 — 23:47 HA6403 Hawaiian Airlines
San Diego — Denver
2h 28m
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from$60
20:19 — 23:47
20:19 — 23:47 AS1070 Alaska Airlines
San Diego — Denver
2h 28m
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from$63
08:00 — 20:00
18:52 — 20:17 F91470 Frontier Airlines
San Diego — Las Vegas
7h 20m stop
15:46 — 18:57 F93540 Frontier Airlines
Las Vegas — Denver
11h
including layover
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from$72
08:00 — 09:09
+1 day
08:00 — 09:31 F91470 Frontier Airlines
San Diego — Las Vegas
20h 29m stop
06:00 — 09:09 F92350 Frontier Airlines
Las Vegas — Denver
24h 9m
including layover
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from$72
09:58 — 18:43
09:58 — 11:50 F93381 Frontier Airlines
San Diego — San Francisco
3h 10m stop
15:00 — 18:43 F91094 Frontier Airlines
San Francisco — Denver
7h 45m
including layover
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from$81
11:08 — 18:06
11:08 — 12:20 UA5249 United Airlines
San Diego — Los Angeles
2h 19m stop
14:39 — 18:06 UA2859 United Airlines
Los Angeles — Denver
5h 58m
including layover
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from$93
12:51 — 22:45
19:38 — 21:04 F91466 Frontier Airlines
San Diego — Las Vegas
5h 17m stop
20:44 — 23:48 F94612 Frontier Airlines
Las Vegas — Denver
8h 54m
including layover
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from$51
13:03 — 04:00
+1 day
12:51 — 14:23 F91466 Frontier Airlines
San Diego — Las Vegas
10h 25m stop
00:59 — 04:00 F91994 Frontier Airlines
Las Vegas — Denver
13h 57m
including layover
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from$67
13:03 — 18:58
12:51 — 14:23 F91466 Frontier Airlines
San Diego — Las Vegas
1h 12m stop
15:46 — 18:57 F93540 Frontier Airlines
Las Vegas — Denver
4h 55m
including layover
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from$77
15:18 — 23:23
15:18 — 16:47 F92084 Frontier Airlines
San Diego — Phoenix
3h 34m stop
20:21 — 23:23 F92142 Frontier Airlines
Phoenix — Denver
7h 5m
including layover
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from$77
16:44 — 09:38
+1 day
16:53 — 22:56 F91856 Frontier Airlines
San Diego — Chicago
8h 38m stop
09:05 — 10:58 F93173 Frontier Airlines
Chicago — Denver
15h 54m
including layover
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from$83
16:53 — 07:32
+1 day
16:53 — 22:56 F91856 Frontier Airlines
San Diego — Chicago
6h 44m stop
05:40 — 07:32 F91483 Frontier Airlines
Chicago — Denver
13h 39m
including layover
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from$78
17:56 — 00:28
+1 day
17:56 — 19:35 UA1871 United Airlines
San Diego — San Francisco
1h 17m stop
20:52 — 00:28 UA1871 United Airlines
San Francisco — Denver
5h 32m
including layover
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from$116
19:22 — 09:44
+1 day
17:22 — 19:09 F93383 Frontier Airlines
San Diego — San Francisco
8h 46m stop
06:15 — 09:54 F91230 Frontier Airlines
San Francisco — Denver
13h 22m
including layover
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from$72
19:22 — 23:45
+1 day
17:22 — 19:09 F93383 Frontier Airlines
San Diego — San Francisco
22h 50m stop
18:19 — 22:03 F93440 Frontier Airlines
San Francisco — Denver
27h 23m
including layover
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from$72
06:15 — 18:22
06:15 — 07:35 NK2369 Spirit Airlines
San Diego — Las Vegas
39m stop
08:14 — 09:46 NK2332 Spirit Airlines
Las Vegas — Stockton
5h 10m stop
14:56 — 18:22 G41635 Allegiant Air
Stockton — Denver
11h 7m
including layover
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from$70
14:30 — 18:12
+1 day
14:30 — 15:48 NK2296 Spirit Airlines
San Diego — Las Vegas
1h 30m stop
17:18 — 18:49 NK2382 Spirit Airlines
Las Vegas — Stockton
19h 59m stop
14:50 — 18:14 G41635 Allegiant Air
Stockton — Denver
26h 42m
including layover
Find flight
from$87
14:30 — 18:12
+1 day
14:30 — 15:48 NK2296 Spirit Airlines
San Diego — Las Vegas
14h 47m stop
06:45 — 08:10 G425 Allegiant Air
Las Vegas — Stockton
6h 48m stop
14:50 — 18:14 G41635 Allegiant Air
Stockton — Denver
26h 42m
including layover
Find flight
from$107
*Departure and arrival times - local. Updated on June 1, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from San Diego to Denver depends on and how to choose the most interesting flight option for you.

Distance between San Diego and Denver is 1371 miles. Time difference between the cities is 1h. Airplanes depart 06:15 to 23:00 from 11 San Diego airport and arrive 06:15 to 23:00 to 2 Denver airports. Average flight time is 2h 28m.

  • The fastest flight 2h 24m
  • Average flight time 2h 28m
  • The earliest flight 06:15
  • The latest flight 23:00
  • Distance 852 ml

The cheapest months to travel to Denver are december (from 51 $), june (from 58 $), november (from 59 $).

The most expensive months are february (from 170 $), august (from 103 $), september (from 97 $).

What is the lowest airfare San Diego to Denver?

The cheapest plane ticket found by our users is $38. This airfare is for economy class on one-way F92818 flight by Frontier Airlines for June 5, 2025 which leaves San Diego in San Diego at 06:41 am and arrives at Denver Denver International at 10:12.

Economy class
$38
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Business class
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First class
?
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Popular Airlines on the Route

The flight San Diego — Denver is served by 7 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Frontier Airlines - 25 departures per week at the price of from $ 38 . And the most expensive tickets are offered by United Airlines airline - from $ 595.

Direct flights

There are 16 nonstop flights on the route. The fastest direct flight is UA1829 by United Airlines takes 2h 24m and the cheapest is F92818 by Frontier Airlines for $38.

See more direct flights

Connecting Flights

There are 287 flights with layovers on the route. The fastest connecting flight is F94578 by Frontier Airlines takes 4h 12m and the cheapest is F92818 by Frontier Airlines for $51.

  • from $51
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  • from $93
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  • AS - Alaska Airlines
    from $102
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  • SY - Sun Country Airlines
    from $120
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  • HA - Hawaiian Airlines
    from $96
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  • MX - Mexicana
    from $212
    Find
  • NK - Spirit Airlines
    from $70
    Find
See more connecting flights

Airports

You can fly from San Diego to Denver from 11 airports (San Diego, San Diego Regional, Gillespie Field, Golden Triangle Reg., El Cajon, Lowndes County, Miramar NAS, Montgomery Field, North Island NAS, Brown Field Municipal, AFB).

San Diego airports

  • San Diego-SAN
    from $38
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  • San Diego Regional-USA
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  • Gillespie Field-SEE
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  • Golden Triangle Reg.-GTR
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  • El Cajon-CJN
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  • Lowndes County-UBS
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  • Miramar NAS-NKX
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  • Montgomery Field-MYF
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  • North Island NAS-NZY
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  • Brown Field Municipal-SDM
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  • AFB-CBM
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Denver airports

  • Denver International-DEN
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  • Arapahoe Co-APA
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How to book a plane 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 flight ticket.
  • 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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