DEN to SAN: Distance and Flight Time

How far is it from Denver to San Diego?

The great-circle distance between Denver International Airport (DEN) and San Diego International Airport (SAN) is 1,371 km (852 mi, 740 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.

How long is the flight from DEN to SAN?

A nonstop flight typically takes about 2h 15m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. SAN is roughly southwest of DEN.

How is the DEN to SAN route written in code?

The pair is written DEN-SAN in IATA codes and KDEN-KSAN in ICAO codes, the form used on a flight plan. Denver International Airport is DEN (KDEN), San Diego International Airport is SAN (KSAN).

Both ICAO codes start with K, the prefix ICAO assigns to the contiguous United States, so this is a route inside one ICAO region. How ICAO prefixes are laid out.

SAN sits 5,414 ft (1,650 m) lower than DEN, which is a real difference in air density on takeoff.

Airlines flying DEN to SAN

3 airlines appear on this route in the open route dataset, 3 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:

A further 1 carrier sell this pair as a codeshare without operating it: FL.

Route and carrier data comes from the OpenFlights open dataset, regenerated here on 3 July 2026. It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.

Frequently asked questions

Related routes

Other routes from Denver (DEN):

Other routes from San Diego (SAN):

DEN airport code · SAN airport code · Busiest airports worldwide