Frontier's UpFront Plus offers a guaranteed empty middle seat for added comfort.
Frontier's Zone 1 boarding available with carry-on purchase or special fare bundle.
Round-trip from | $134 (Frontier) |
---|---|
One-way from | $79 (United Airlines) |
Popular in | March |
Cheapest in | January |
Average price | $196 |
Good round-trip deal | $223 or less |
Good one-way deal | $129 or less |
Fly from
Fly to
Route
Depart
Return
Price
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 8/7
6:25 am-10:02 am
Nonstop2h 37m
Denver Intl
Tue 8/19
8:45 pm-10:08 pm
Nonstop2h 23m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 8/16
6:45 am-10:10 am
Nonstop2h 25m
Denver Intl
Mon 8/18
7:40 am-9:05 am
Nonstop2h 25m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Mon 8/11
6:47 pm-10:15 pm
Nonstop2h 28m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 8/2
6:25 am-10:02 am
Nonstop2h 37m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 9/4
4:40 pm-10:27 pm
1 stop4h 47m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Wed 9/17
1:25 pm-7:50 pm
2 stops5h 25m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Tue 9/30
1:45 pm-9:47 pm
1 stop7h 02m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sun 9/28
6:15 am-12:00 pm
1 stop4h 45m
The best time to book flights from San Diego to Denver is 39 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, October is the cheapest month in which you can book a flight from San Diego to Denver (average of $197). Flying from San Diego to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from San Diego to Denver in the evening. Doing so could potentially save you 39% on the flight price compared to flying in the afternoon, which is usually more expensive.
Travelers seeking maximum savings on their San Diego to Denver flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from SAN to DEN are scheduled on a Thursday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Overall
Crew
Entertainment
Boarding
Food
Comfort
Reviews
James,Apr 2025
LAX - SFO
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$58 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$166 | Average$306 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$167 | Average$245 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$173 | Average$275 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$196 | Average$297 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$197 | Average$256 | FlexibilityNo cancel fee | On-time71% |