Flights from Denver (SAN) to San Diego (DEN)

Origin Airport

Denver International Airport

Destination Airport

San Diego International Airport

Airlines Flying

Frontier, United, Southwest


1078 miles

Flight Duration

2h 30m

Book Cheap Flights from Denver to San Diego

When looking for a cheap flight ticket online from Denver to San Diego, it is prudent to anticipate possible price variations. We recommend booking at least 34 days in advance, which may save you up to 23% on flights from Denver to San Diego when compared to buying within a week of travel. Not everyone is willing to wait 34 days, therefore we also offer tickets departing within the next two weeks, with prices beginning at $229. We have alternatives accessible within the next three days for $280. 

January is one of the finest months to fly from Denver to San Diego. The average price per person in January is $226, but you can find bargains as low as $82. June is the month with the most expensive pricing. Choosing a flight in January will save you 27% compared to booking in June. 

Travel Information on flights from Denver to San Diego

High Season

May to July

Low Season

September to October

Tips for finding the best deals

  • Tuesday departures are an excellent way to secure a low price. You can expect to save up to 24 % by traveling on this day of the week.

  • Frontier Airlines is one of the most popular & cheapest airlines serving the route from Denver to San Diego.

  • Frontier Airlines' most popular departure airport from Denver to San Diego is Denver International Airport, and its most popular arrival airport is San Diego Airport.

  • When travelling from Denver to San Diego, the price typically varies depending on the time of day.

  • Searching for a flight in the evening can save you up to 15% compared to searching for a flight around noon.

Frequently Asked Question?

The flight distance between Denver International Airport (DEN) and SAN is 850 miles. Utilize your short-haul flight to jot down all the major tourist destinations you wish to see and how you will get there. A precise schedule is essential for a memorable holiday.

There are several airlines offering direct flights between Denver and San Diego County. Southwest Airlines (WN) is among the most dependable airlines. This airline runs around 178 flights every month.

177 people have searched for flights from Denver Intl to San Diego in the past month.

If you’re looking for an airline offering great fares, check out the deals offered by United Airlines (UA). This airline performs 152 monthly flights. Between the two, you are certain to find a flight suitable for your trip plans.

Thursday flights are often the most affordable. Tuesday and Wednesday pricing are similarly favorable, but you may want to prepare a larger budget if you want to go over the weekend, as that is when prices are typically the highest.

The following days provide nonstop flights: Tuesday and Thursday.

Frequent travelers may already be aware of this, but early in the week is typically the least expensive time to fly. In 2021, flights departing on Monday were typically the cheapest day of the week, although you may have to pay a premium for weekend flights, which are typically in great demand.

Yes, there are several sub-$100 flights from Denver to San Diego. Recent bookings for the least expensive flight cost just $39 on Frontier, but you should expect to pay $58 on average.

There are more than 20 available flights from Denver to San Diego for less than $100 during the next week.

Frontier can transport you from Denver to San Diego for as little as $39 in 2 hours and 30 minutes for a one-way fare. The distance between Denver and San Diego is roughly 1000 miles.

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