Earn point on your loyalty program!arrow arc left

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

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 San Diego (SAN) to Denver (DEN)

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

Cheap flights from San Diego to Denver in October , November 2026

28 Oct - 09 Nov $ 214.00
SAN
San Diego
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
Pick dates
29 Oct - 26 Nov $ 258.00
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
Pick dates
30 Oct - 09 Nov $ 387.00
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
DIRECT
SAN
San Diego
Pick dates

Last minute flights from San Diego to Denver

28 Oct - 31 Oct $ 293.00
SAN
San Diego
Frontier Airlines
1 STOPS
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
SAN
San Diego
Pick dates
28 Oct - 31 Oct $ 340.00
SAN
San Diego
Frontier Airlines
DIRECT
DEN
Denver
DEN
Denver
Frontier Airlines
1 STOPS
SAN
San Diego
Pick dates
27 Oct - 31 Oct $ 518.00
SAN
San Diego
United Airlines
DIRECT
DEN
Denver
DEN
Denver
United Airlines
DIRECT
SAN
San Diego
Pick dates

One-way flights to Denver from San Diego

4:53 PM - 4:53 PM
Frontier Airlines
0 Stops
2h 32m
SAN - DEN
$ 196
Kiwi
Pick dates
4:53 PM - 4:53 PM
Frontier Airlines
0 Stops
2h 32m
SAN - DEN
$ 196
Kiwi
Pick dates
8:45 AM - 8:45 AM
United Airlines
0 Stops
2h 25m
SAN - DEN
$ 232
Kiwi
Pick dates

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

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