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Flights between Denver (DEN) and San Diego (SAN)

Denver International Airport, United States ↔ San Diego International Airport, United States

A direct route between Denver and San Diego appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 28 Jul 2026 — sampled, not a live timetable; confirm with the airline.

Alaska Airlines (AS)Southwest Airlines (WN)Sun Country Airlines (SY)United Airlines (UA)
Distance
1,371 km
852 miles
Est. flight time
2h 13m
great-circle estimate
Time difference
~1h
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in United States

Jan
4°
9/-1
70mm
Feb
6°
11/1
60mm
Mar
11°
16/6
75mm
Apr
17°
22/12
80mm
May
23°
28/18
95mm
Jun
28°
33/23
100mm
Jul
30°
35/25
95mm
Aug
29°
34/24
90mm
Sep
25°
30/20
80mm
Oct
18°
23/13
70mm
Nov
11°
16/6
70mm
Dec
5°
10/0
75mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in United States

Jan
4°
9/-1
70mm
Feb
6°
11/1
60mm
Mar
11°
16/6
75mm
Apr
17°
22/12
80mm
May
23°
28/18
95mm
Jun
28°
33/23
100mm
Jul
30°
35/25
95mm
Aug
29°
34/24
90mm
Sep
25°
30/20
80mm
Oct
18°
23/13
70mm
Nov
11°
16/6
70mm
Dec
5°
10/0
75mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Common questions

How far is Denver from San Diego?

Denver (DEN) and San Diego (SAN) are around 1,371 km (852 miles) apart — an estimated 2h 13m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the DEN–SAN route?

Airlines recorded operating this route in the OpenFlights network include Alaska Airlines, Southwest Airlines, Sun Country Airlines, United Airlines. This reflects historical scheduled service and may be out of date.

What is the time difference between Denver and San Diego?

Time difference ~ 1 hour (varies with daylight-saving).

When is it warmest in United States?

Across United States, the warmest month on average is July, with mean temperatures around 30°C. These are country-level monthly climate normals, not airport-specific.

Distances and flight times are great-circle estimates, not booked block times.