Flights from Denver to San Diego

Our cheapest offers for flights from Denver to San Diego

Here you can compare cheap flights from Denver (DEN) to San Diego (SAN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to San Diego. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Denver
San Diego
Outbound
12/28/25
direct
F92711
02h 32min
Return
-
Frontier Airlines
$204
found yesterday
Best option
Denver
San Diego
Outbound
04/03/26
direct
AS1428
02h 23min
Return
04/16/26
direct
AS1429
02h 18min
Alaska Airlines ?
$248
Denver
San Diego
Outbound
04/03/26
direct
HA7487
02h 23min
Return
04/16/26
direct
HA7522
02h 22min
Hawaiian Airlines ?
$265
Denver
San Diego
Outbound
04/03/26
direct
F94989
02h 31min
Return
04/16/26
direct
AS1492
02h 19min
Frontier Airlines
$268
Denver
San Diego
Outbound
04/03/26
direct
AS1428
02h 23min
Return
04/16/26
direct
AS1492
02h 19min
Alaska Airlines ?
$283
Denver
San Diego
Outbound
04/03/26
1 Stopover (PHX)
F94753, F91571
12h 24min
Return
04/16/26
1 Stopover (MSP)
SY0408, SY0657
21h 54min
Frontier Airlines ?
$399
Denver
San Diego
Outbound
04/03/26
direct
HA7487
02h 23min
Return
04/16/26
direct
HA7492
02h 19min
Hawaiian Airlines ?
$412
Denver
San Diego
Outbound
04/03/26
direct
UA0540
02h 32min
Return
04/16/26
direct
UA2307
02h 37min
United Airlines ?
$942
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Denver to San Diego

Favorite airline: Frontier Airlines
65 % of flights from Denver to San Diego are booked with Frontier Airlines.
Frontier Airlines
65 %
United Airlines
29 %
Sun Country Airlines
6 %
Direct flights are cheaper
Flights with a stopover are on average $66.00 more expensive than direct flights.
non stop flight
1 stop
02h 24min
04h 19min
$241
$307
The favorite connection is non-stop
Flights from Denver to San Diego are most often booked as a direct flight.
Route
bookings
Direct flights
02h 24min, from $241
92 %
1 stopover Las Vegas - McCarran International Airport, NV
04h 19min, from $307
8 %

Important flight information

Flight information: Denver - San Diego

Cheapest outbound flight from $203.98
Roundtrip from $247.60
Flight duration min. 02:17 / max. 12:10
Return flight duration min. 02:10/ max. 06:10
Distance 1373 km
Flights per week 147
Departure airport Airport Denver International Airport, CO (DEN)
Arrival airport Airport San Diego - Lindberg Field International, CA (SAN)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to San Diego
Flight destinations with a similar price
Flight destinations with a similar price