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.
Most accurate provider | FlightHub 3 stars |
---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $79 (Kiwi.com) |
One-way from | $41 (Cheapflightsfares) |
Popular in | March |
Cheapest in | January |
Average price | $149 |
Good round-trip deal | $175 or less |
Good one-way deal | $120 or less |
Fly from
Fly to
Route
Depart
Return
Price
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 11/15
3:48 pm-7:06 pm
Nonstop2h 18m
Denver Intl
Mon 11/24
6:00 am-7:34 am
Nonstop2h 34m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 11/13
6:47 pm-10:17 pm
Nonstop2h 30m
Denver Intl
Sun 2/15
3:50 pm-5:10 pm
Nonstop2h 20m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Thu 11/20
3:48 pm-7:06 pm
Nonstop2h 18m
Denver Intl
Mon 11/24
6:00 am-7:34 am
Nonstop2h 34m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 11/22
8:33 pm-11:59 pm
Nonstop2h 26m
Denver Intl
Mon 11/24
7:20 pm-8:48 pm
Nonstop2h 28m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 11/8
3:48 pm-7:06 pm
Nonstop2h 18m
Denver Intl
Tue 11/11
12:49 pm-2:15 pm
Nonstop2h 26m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 12/26
6:35 am-10:05 am
Nonstop2h 30m
Denver Intl
Fri 1/2
3:30 pm-6:45 pm
1 stop4h 15m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 12/5
8:40 am-1:35 pm
1 stop3h 55m
Denver Intl
Sun 12/7
10:10 am-11:35 am
Nonstop2h 25m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 12/12
5:35 pm-10:35 pm
1 stop4h 00m
Denver Intl
Mon 12/15
8:40 am-10:10 am
Nonstop2h 30m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Fri 11/14
5:55 pm-12:30 am
1 stop5h 35m
Denver Intl
Sun 2/15
3:50 pm-5:10 pm
Nonstop2h 20m
San DiegoDenver
SAN - DEN
SANDEN
San Diego
Sat 11/22
6:35 pm-12:25 am
1 stop4h 50m
Denver Intl
Fri 11/28
5:40 am-7:15 am
Nonstop2h 35m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy2 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy2 stars | Trust Score*1 star | |
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy- | Trust Score*3 stars | |
Price Accuracy- | Trust Score*1 star | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy2 stars | Trust Score*3 stars |
The best time to book flights from San Diego to Denver is 58 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, January is the cheapest month in which you can book a flight from San Diego to Denver (average of $24). Flying from San Diego to Denver in May is currently the most expensive (average of $66). 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 30% 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 Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
About 15% of weekly flights between San Diego and Denver have experienced delays in the past year, with the average delay time being 142 minutes.
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Sun Country Air have had the lowest number of delays on this route, with no flights being classified as delayed.
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Food
Comfort
Overall
Crew
Boarding
Entertainment
Reviews
Hannah,Aug 2025
SFO - SAN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$68 | Average$192 | FlexibilityNo cancel fee | On-time85% | |
Cheapest$68 | Average$160 | FlexibilityNo cancel fee | On-time62% | |
Cheapest$103 | Average$194 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$135 | Average$264 | FlexibilityNo cancel fee | On-time63% | |
Cheapest$154 | Average$307 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$206 | Average$297 | FlexibilityNo cancel fee | On-timeN/A |