$61 Find Cheap Flights from Denver to San Diego - Compare and Save

You can use three lactation rooms located post-security at Terminal 1 West Rotunda, second level, near the elevator. There’s also a room at Terminal 1 East Rotunda on the ground level after the security checkpoint. In Terminal 2, the lactation room is on the second level close to Gate 34-35. The rooms are fitted with a hand washing station, comfortable seating, artwork, electrical outlets, soft lighting, and a children’s seat.

Different airlines, including United Airlines and Frontier, fly nonstop from Denver International Airport to San Diego International Airport. Frontier also flies through the McCarran International Airport (LAS), but the flight could take longer. Book through KAYAK for details on different flights if you want to find the shortest route.

Yes, the Denver International Airport allows pets. To help you manage your pet, the airport offers a pet relief area in each concourse. There’s also one at the Jeppesen Terminal. The relief rooms are located post-security in the cores of A, B, and C Gates. All pet relief rooms have artificial turf flooring and a drainage system. There are disposal containers and bags.

Travelers who need special assistance can contact their airlines prior to the trip to request assistance. At the San Diego International Airport, all terminals are wheelchair accessible. You can find an accessible shuttle, and if you need help, there are telephones at the airport’s reservation boards.

Wi-Fi at the San Diego International Airport is available in 2h sessions. If you want to connect quickly, enable your device's wireless connection and search for #SANfreewifi, then connect. To use the service longer, you just need to log back in when the session expires.

Denver Airport (DEN) offers several options for parking. The Garage East Parking and Garage West Parking garages are located on either side of the main terminal. Next to these garages you’ll find the Economy East and Economy West parking lots, which are connected to the main terminal by pedestrian walkways and the airport’s free shuttle service. Two satellite shuttle lots (Mt. Elbert and Pikes Peak) offer a very low parking rate and free shuttle service to the airport. You should allow at least 30 minutes to reach the terminal from these lots.

Yes, Denver’s A Line commuter rail service runs between Denver Union Station in Downtown Denver to the airport. The trip takes just under 40min, and you’ll arrive at the airport’s train station in the DEN Transit Center, which is a short walk from the terminal.

Yes, the Westin Denver International Airport is DEN’s only on-site hotel. It is located above the Transit Center, making for an easy walk to the Jeppesen Terminal. Hotel amenities include valet parking and a cocktail bar that serves snacks and light meals.

There are six airline lounges at Denver International Airport. The American Airlines Admirals Club, British Airways Executive Club, and Delta Sky Club are all located in the Gate A concourse, and United has three lounges (Club East, Club West, and Club Fly) in the Gate B concourse. In addition to the airline lounges, select American Express cardholders can relax in the Centurion Lounge in the Gate C concourse while US service members and their families can enjoy some time before their flight at the USO Denver, located just over the bridge to Gate A from the main terminal.

At San Diego International Airport (SAN), all of the car rental counters are located off-site in the Consolidated Rental Car Center. This center is connected to the airport by the free shuttle bus service. The rental car lot is next to the Rental Car Center.

Yes, the #992 buses of San Diego’s Metropolitan Transit System pick up passengers at both of SAN’s terminals and make regular trips to Broadway and State Street in Downtown San Diego. The trip downtown takes less than 20min.

Among airlines operating Denver to San Diego flights:

• Frontier: offers free seat selection
• Alaska Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

4 airlines operate flights between Denver and San Diego. The airlines offering nonstop flights on this route include:
• Southwest
• United Airlines
• Alaska Airlines
• Frontier

Flights from Denver to San Diego usually depart from Denver Intl (DEN) and arrive at San Diego (SAN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Frontier: a cabin bag and a checked bag in Economy Class
• Alaska Airlines: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Four cabin classes are available on flights from Denver to San Diego:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $193 round-trip, compared to $206 via a layover through Salt Lake City (SLC).

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines and Southwest. Other aircraft seen on the route include Airbus A321neo variants.

One-stop flights from Denver to San Diego most commonly connect through:

• Phoenix Sky Harbor Intl (PHX) - 60% of one-stop connections
• Salt Lake City (SLC) - 30% of one-stop connections
• Las Vegas Harry Reid Intl (LAS) - 10% of one-stop connections

Phoenix Sky Harbor Intl (PHX) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 15% on the Denver to San Diego route. Wednesday is the cheapest departure day at $178 round-trip on average, while Monday is the most expensive at $208, a difference of $30. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Denver to San Diego route, 20% of flights were delayed in the past 3 months, with delays averaging 1 hour 53 minutes.

Morning is the busiest departure period on Denver to San Diego flights, with 41% of flights leaving in that window. Night departures account for 26%, afternoon flights for 20%, and evening flights for 13%.

Some of the most popular sights in San Diego are Gaslamp Quarter, San Diego Convention Center and SeaWorld San Diego. These are among the most viewed places in San Diego on KAYAK.

A nonstop flight from Denver to San Diego takes 2h 28m, covering 852 miles.

These are the earliest and latest flight times available from Denver to San Diego:

• Earliest: departs at 6:00 am and lands at 8:28 am
• Latest: departs at 10:32 pm and lands at 1:00 am.

The flight takes about 2h 28m.

Last-minute fares on this route - booked within 2 weeks of departure - run 45% above the route average of $193. Book 5 weeks before departure for the lowest fares.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

One-way fares from Denver to San Diego are currently lower than usual. Average one-way flight prices are about $85, which is 39% below the typical average for this route.

Alaska Airlines is slightly above the route average for timely arrivals, while Frontier has a lower on-time arrival rate. On-time arrival rates on Denver to San Diego flights are:

• Alaska Airlines: 87% on time
• Frontier: 84% on time
• United Airlines: 83% on time

Overall, flights on this route are on time 80% of the time on average.

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 08m, compared with 5h 29m via Phoenix Sky Harbor Intl (PHX) and 6h 53m via Las Vegas Harry Reid Intl (LAS).

San Diego is 1 hour behind Denver (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
· Dollar
· Payless
· Europcar
· Thrifty
· Fox

Round-trip flights from Denver to San Diego range from $119 to $270, with an average of $193 over the past 12 months. Anything below $119 counts as a good deal.

Alaska Airlines is the only airline on the Denver to San Diego route offering in-flight Wi-Fi. Pricing depends on fare class.