Earn point on your loyalty program!arrow arc left

Cheap flights from Denver (DEN) to San Diego (SAN)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Denver (DEN) to San Diego (SAN)

How to find the cheapest flight from Denver (DEN) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Denver to San Diego in March , April 2025

25 Mar - 19 Apr $ 62.00
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
Pick dates
19 Mar - 19 Apr $ 62.00
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
Pick dates
29 Mar - 19 Apr $ 62.00
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
Pick dates

Last minute flights from Denver to San Diego

29 Mar - 31 Mar $ 146.00
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
Pick dates
15 Mar - 31 Mar $ 431.00
DEN
Denver
United Airlines
DIRECT
SAN
San Diego
SAN
San Diego
United Airlines
DIRECT
DEN
Denver
Pick dates
15 Mar - 31 Mar $ 431.00
DEN
Denver
United Airlines
DIRECT
SAN
San Diego
SAN
San Diego
United Airlines
DIRECT
DEN
Denver
Pick dates

One-way flights to San Diego from Denver

10:43 PM - 10:43 PM
Frontier Airlines
0 Stops
2h 37m
DEN - SAN
$ 31
Kiwi
Pick dates
6:15 AM - 6:15 AM
Sun Country Airlines
0 Stops
2h 22m
DEN - SAN
$ 75
Kiwi
Pick dates
12:38 PM - 6:00 AM
Alaska Airlines
2 Stops
20h 1m
DEN - SAN
$ 311
Kiwi
Pick dates

How to find the cheapest flight from Denver (DEN) to San Diego (SAN)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Denver (DEN) to San Diego (SAN)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.