Denver to San Diego Flight Time & Schedules

Denver to San Diego Flights with Stops in Las Vegas or Salt Lake City

A nonstop flight from Denver International Airport (DEN) to San Diego International Airport (SAN) usually takes around 2 hours 20 minutes to 2 hours 35 minutes , depending on the airline and individual flight schedule. Southwest currently lists an average journey time of approximately 2 hours 22 minutes for this route.

The airports are separated by roughly 851–852 miles (about 1,370 km) . Despite being a relatively short domestic journey, scheduled times can differ because of winds, air-traffic routing, taxiing and airport operating conditions.

Travelers have a good choice of nonstop flights. Southwest Airlines, United Airlines, Frontier Airlines and Alaska Airlines currently operate direct services between Denver and San Diego.

Connecting flights are also available, although they normally make the journey considerably longer. Some faster one-stop schedules can take approximately 4 hours 15 minutes through Phoenix , 4 hours 25 minutes through Las Vegas , or 4 hours 26 minutes through Salt Lake City .

For most passengers, a nonstop flight is therefore the quickest and simplest way to travel between the two cities.

How Long Does a Nonstop Flight from Denver to San Diego Take?

Direct flights between Denver and San Diego generally have scheduled journey times of approximately 2 hours 20 minutes to 2 hours 35 minutes.

Published timings vary by carrier and departure. Current schedule data shows examples of around 2 hours 25 minutes with United , 2 hours 26 minutes with Frontier , and 2 hours 33 minutes with Alaska Airlines , while Southwest reports an average of approximately 2 hours 22 minutes on the route.

Traveling nonstop from DEN to SAN is usually the most time-efficient option, with most journeys taking roughly two and a half hours or less.

Denver International Airport and San Diego International Airport are around 851 miles apart by air , making this a relatively short route between Colorado and Southern California.

Several airlines compete on the route, giving passengers a choice of departure times and fare types throughout the week.

Because no aircraft change is required, a nonstop ticket also avoids the additional boarding, airport waiting and connection time associated with a one-stop itinerary.

Phoenix Sky Harbor International Airport (PHX) is one possible connection point for passengers who are not traveling nonstop.

Some of the quicker DEN–PHX–SAN schedules can take around 4 hours 15 minutes to 4 hours 16 minutes in total.

Southwest and American are among the airlines that may offer Phoenix-based connecting options depending on the date and timetable.

That makes the journey close to two hours longer than many direct flights, even when the connection is relatively efficient.

Travelers should check the complete elapsed journey time because a longer wait in Phoenix can increase the trip considerably.

Harry Reid International Airport (LAS) in Las Vegas is another common transfer option.

Some Southwest itineraries can complete the journey in approximately 4 hours 25 minutes , including the connection.

Flights through Salt Lake City International Airport (SLC) can also be relatively efficient. Certain Delta schedules take around 4 hours 26 minutes from Denver to San Diego with one stop.

Both routes take significantly longer than flying directly, but they can provide alternatives when nonstop fares, schedules or seat availability do not match a traveler's plans.

Passengers can find several connecting routes in addition to nonstop DEN–SAN services.

Some relatively quick schedules include approximately:

* 4 hrs 15 mins via Phoenix

* 4 hrs 25 mins via Las Vegas

* 4 hrs 26 mins via Salt Lake City

* 4 hrs 45 mins via Los Angeles

* 5 hrs 5 mins via Albuquerque

* 5 hrs 11 mins via San Francisco

These timings are examples of available schedule combinations rather than fixed journey times.

Connections can change considerably between travel dates. A route that takes just over four hours on one itinerary could take substantially longer when the layover is extended.

For this reason, compare the total journey duration , not simply the flying time of the individual flight segments.

Denver to San Diego Travel Times by Routing

Departure Airport	Arrival Airport	Route Code	Estimated Flight Time
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–SAN	Around 2 hrs 20 mins–2 hrs 35 mins nonstop
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–PHX–SAN	From around 4 hrs 15 mins with one stop
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–LAS–SAN	From around 4 hrs 25 mins with one stop
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–SLC–SAN	From around 4 hrs 26 mins with one stop
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–LAX–SAN	From around 4 hrs 45 mins with one stop
Denver International Airport (DEN)	San Diego International Airport (SAN)	DEN–SFO–SAN	From around 5 hrs 11 mins with one stop

Current schedule data supports these approximate nonstop and connecting journey times, but individual flights can vary.

The figures should therefore be used as a guide rather than a guaranteed travel duration. Weather, air-traffic control, airport congestion, operational changes and the length of a connection can all influence the final journey time.

Airlines Operating Direct Flights Between Denver and San Diego

United Airlines

Southwest Airlines

Frontier Airlines

Alaska Airlines

Is San Diego in the Same Time Zone as Denver?

No. Denver and San Diego are in different time zones.

Denver follows Mountain Time , while San Diego follows Pacific Time . San Diego is normally one hour behind Denver . For example, when it is 3:00 PM in Denver, it is 2:00 PM in San Diego .

Both cities observe daylight saving time. During most of the year, the one-hour difference remains the same.

The time-zone change also affects how the scheduled flight appears on a ticket. For example, a journey lasting roughly two and a half hours may appear to arrive only about an hour and a half after its Denver departure time when comparing the local clock times.

Always use the local departure and arrival times shown on the flight itinerary.

Explore More Flight Times & Routes

Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below.

Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Denver Flight Times.