Cheap flights from Denver to San Diego

Choose between Southwest Airlines, Frontier Airlines, or United Airlines to find the best price

Travelers usually depart from Denver International, Denver Union Station, or Denver Greyhound station when they travel from Denver to San Diego. Book your trip to arrive at San Diego International, San Diego bus station, San Diego Old Town station, San Diego-La Jolla, or San Diego-Balboa Park. The distance between Denver and San Diego is 1372 km. The most popular airlines for this route are Southwest Airlines, Frontier Airlines, United Airlines, American Airlines, and Spirit Airlines. Denver and San Diego have 212 direct flights per week.

Weekly flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Number of flights37264845-3125

Fly direct with

Frontier Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

United Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Southwest Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Check-in for a flight from Denver to San Diego

NameCarrier codeIATA CodePassport needed during bookingAirport check-in closesOnline check-in available
Southwest AirlinesSWAWNNoUnknownNo
Frontier AirlinesFFTF9NoUnknownNo
United AirlinesUALUAYesUnknownNo
American AirlinesAALAAYesUnknownNo
Spirit AirlinesNKSNKNo10 min before flightNo

Frequently asked questions

How long does it take to travel from Denver to San Diego?

A one-way nonstop (direct) flight between Denver and San Diego takes around 2.4 hours.

What is the flight distance between Denver and San Diego?

The flight distance between Denver and San Diego is 1372 km.

What airlines offer nonstop (direct) flights between Denver and San Diego?

Several carriers operate flights between Denver and San Diego. Airlines offering nonstop (direct) flights include Frontier Airlines, United Airlines, Southwest Airlines.

What are the most popular routes to and from Denver?

Travelers frequently search for route combinations, such as Denver and Los Angeles International, McCarran International, Newark Liberty International, Fort Lauderdale–Hollywood International, Dallas/Fort Worth International, Phoenix Sky Harbor International, Minneapolis–Saint Paul International, O Hare International, Salt Lake City International, Austin–Bergstrom International, Detroit Metropolitan.

What are the most popular routes to and from San Diego?

Travelers frequently search for route combinations, such as San Diego and McCarran International, Miami International, Fort Lauderdale–Hollywood International, Denver International, San Francisco International, Phoenix Sky Harbor International, Seattle–Tacoma International, Tampa International, Minneapolis–Saint Paul International, O Hare International, Salt Lake City International.

Which airports are there in Denver?

Denver is mainly served by Denver International. But there are other airports nearby, including Rocky Mountain Metropolitan Airport, Centennial Airport.

What airports are near Denver?

The main airport in Denver is Denver International. It is also served by Colorado Springs, Laramie Regional, Pueblo Memorial, Eagle County Regional, Cheyenne Regional.

What airports are near San Diego?

The main airport in San Diego is San Diego International. It is also served by Tijuana International, John Wayne, Hollywood Burbank, Ontario International, Mexicali International, Palm Springs International, Long Beach, Imperial County, Yuma International, Cable.

What buses and trains depart from Denver?

A number of bus and train companies depart from Denver, including Greyhound.

Is it possible to combine flights, buses, and trains in one itinerary when traveling between Denver and San Diego?

What is Virtual Interlining and how do I use it?

Which airlines fly between Denver and San Diego?

When's the best time to travel between Denver and San Diego?

What flights operate between Denver and San Diego?

How many airports are there near Denver?

How many airports are there near San Diego?

Is it possible to reach Denver by bus or train?

What time do nonstop (direct) flights between Denver and San Diego depart?

What time do nonstop (direct) flights between Denver and San Diego arrive?

What time do flights between Denver and San Diego depart?

What time do flights between Denver and San Diego arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

Find the best connection from Denver to San Diego

Search, compare, and book flights, trains, or buses to get there.

Search flights, trains & buses