Cheap flights from San Diego to Denver

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Denver travel tips

1) Avoid the Highlands and the Cap Hill when riding a bike in Denver

Despite the location near mountains, Denver is pretty flat to ride a bike. The only two areas that may give bikers problems are the Highlands and the Cap Hill, with their steep slopes and hills. But generally, you can ride a bike around the city without worrying about a 30-degree incline.

2) Rent a bike in Denver and ride around Sloan Lake

Rent a bike with a bike-share program, B Cycle, in Denver. A perfect place to start your ride is Sloan Lake with its big surrounding area.

3) When walking in Denver keep your ice to the 7-meters-high dairy jug

When you see the 7-meters-high dairy jug in Denver, just know it is Little Man Ice Cream cafe. They sell cones of handcrafted ice cream, including vegan options. A classic Chunky Chocolate cone is a must.

Travelers usually depart from San Diego International, San Diego, CA - Old Town, San Diego, CA Bus Station, San Diego, CA - Santa Fe, or San Diego, CA - La Jolla when they travel from San Diego to Denver. Book your trip to arrive at Denver International, or Denver Union Station. The distance between San Diego and Denver is 1372 km. The most popular airlines for this route are Frontier Airlines, United Airlines, American Airlines, Alaska Airlines, and Spirit Airlines. San Diego and Denver have 208 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights7677-77
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.

Check-in for a flight from San Diego to Denver

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
United AirlinesUALUAYesNo
American AirlinesAALAAYesNo
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight

Frequently asked questions

How long does it take to travel from San Diego to Denver?
A one-way nonstop (direct) flight between San Diego and Denver takes around 2.5 hours.
What is the flight distance between San Diego and Denver?
The flight distance between San Diego and Denver is 1372 km.
What airlines offer nonstop (direct) flights between San Diego and Denver?
Several carriers operate flights between San Diego and Denver. Airlines offering nonstop (direct) flights include Frontier Airlines, United Airlines.
What are the most popular routes to and from San Diego?
Travelers frequently search for route combinations, such as San Diego and London, Edmonton, Las Vegas, Cincinnati, Manchester, Phoenix, New York, Houston, San Francisco, Minneapolis, Austin, Los Angeles, New Orleans, Amsterdam, Madrid, Raleigh, Nashville, Detroit, Atlanta, Chicago.
What are the most popular routes to and from Denver?
Travelers frequently search for route combinations, such as Denver and London, Calgary, Manchester, Bangkok, Dublin, Taipei, Buffalo, Athens, Detroit, Toronto, Manila, Edinburgh, New York, Seattle, Austin, Chicago, San Francisco, Orlando, Fort Lauderdale, Los Angeles.
Which airports are there in San Diego?
San Diego is mainly served by San Diego International. But there are other airports nearby, including Marine Corps Air Station Miramar, McClellan–Palomar.
What airports are near San Diego?
The main airport in San Diego is San Diego International. It is also served by Los Angeles International, Tijuana International, Ontario International, John Wayne, Mexicali International, Hollywood Burbank, Palm Springs International, Imperial County, Yuma International, Long Beach.
What airports are near Denver?
The main airport in Denver is Denver International. It is also served by Colorado Springs, Eagle County Regional, Cheyenne Regional, Laramie Regional, Pueblo Memorial.
What buses and trains depart from San Diego?
A number of bus and train companies depart from San Diego, including Amtrak train, Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between San Diego and Denver?
What is Virtual Interlining and how do I use it?
Which airlines fly between San Diego and Denver?
When's the best time to travel between San Diego and Denver?
What flights operate between San Diego and Denver?
How many airports are there near San Diego?
How many airports are there near Denver?
Is it possible to reach San Diego by bus or train?
What time do nonstop (direct) flights between San Diego and Denver depart?
What time do nonstop (direct) flights between San Diego and Denver arrive?
What time do flights between San Diego and Denver depart?
What time do flights between San Diego and Denver 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.

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