Whether you're traveling for business or pleasure, solo, or with the whole family, you'll enjoy the flexibility of flying Southwest®.
Find your next flight from Denver to San Diego now!
Looking for low fares? Check out this upcoming flight:
Denver, CO to San Diego, CA
*Restrictions and exclusions apply. Seats and dates are limited. Select markets. 27 travel days available. Fares are updated hourly. Fares displayed on external channels may no longer be available at time of booking. To find the most updated fare, please visit Southwest.com.
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Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.
Find low faresTravel tips for your next Southwest flight
How to board the plane earlier:
Southwest seats are first come, first served based on check-in order. But there are ways to board the plane earlier!
- Purchase EarlyBird Check-In®1 for automatic check-in and a better boarding position.
Enjoy movies, sips, and snacks during your flight.
Take advantage of inflight entertainment with free movies4, free live TV5, free texting6, and $8 inflight Internet7.
We also offer free sodas, coffee, and snacks8—learn more about the inflight food and beverage experience.
Take advantage of free same-day standby9.
Have a change of travel plans? We offer free same-day standby for all fare types. This means that you can retain your current flight while listing for standby on an earlier flight. If a seat becomes available, it’s yours at no charge!
Make the most of our Rapid Rewards® Program.
Rapid Rewards Members can redeem their points for flights, hotel stays, rental cars, gift cards, and more. And your points never expire!
| Fare | Fly one-way from $79 (departing on 8/13)* |
|---|---|
| Departing from | Denver International Airport (DEN) |
| Arriving at | San Diego International Airport (SAN) |
| Average flight time | 2 hours 22 minutes |
| Distance | 853 miles |
| 150† | Weekly flights |
|---|---|
| 6‡ | Nonstop flights per day Monday through Friday |
| 6 ‡ | Nonstop flights on Saturday |
| 7 ‡ | Nonstop flights on Sunday |
Other popular flights from Denver:
†Weekly flights based on DOT published scheduled average flights Monday through Sunday between 6/1/2025 and 6/30/2025. Note: route may not operate every day of the week.
‡Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 6/1/2025 and 6/30/2025.
Explore San Diego.
Layer on the sunscreen and get ready to catch some rays in sunny San Diego! The destination nicknamed America’s Finest City has over 68 miles of beaches, making it a favorite spot for surfers, families, and watersport enthusiasts alike. Choose from beachy spots including La Jolla Shores—popular for kayaking, snorkeling, and scuba diving—classic Mission Beach Boardwalk, and laid-back Coronado Beach. Tired of the beach but still want to enjoy the weather? Partake in other outdoor activities such as hiking through the salt marshes and waterfowl refuges of Torrey Pines State Reserve and whale watching at Sunset Cliffs Natural Park.
San Diego, the oldest city in California, has a rich cultural history and many notable landmarks. Take a tour of the USS Midway Aircraft Carrier Museum—one of the United States military's largest ships—or visit the museum at California’s first mission, Mission Basilica San Diego de Alcala. Wander through the shops and galleries in the historic Gaslamp Quarter and admire the restored late-19th- and early 20th-century Victorian buildings.
Downtown San Diego is just minutes from the airport, so your vacation can get started right away! Kids and adults alike will love a visit to the world-famous San Diego Zoo. And no trip to San Diego is complete without visiting Balboa Park, home to the botanical gardens, the Museum of Man, the Museum of Natural History, and the San Diego Museum of Art.
Questions we hear the most
The average flight time from Denver to San Diego is 2 hours 22 minutes.
There are 150 weekly flights from Denver to San Diego on Southwest Airlines.
Yes, Southwest flies nonstop from Denver to San Diego 6 times per day from Monday through Friday.
Yes, Southwest flies nonstop from Denver to San Diego 6 times per day on Saturdays and 7 times per day on Sundays.
To find the lowest fares by day and time to fly Denver to San Diego with Southwest, check out our Low Fare Calendar.
You can rent a car at San Diego International Airport—book yours with your flight.
Yes! Flights from Denver to San Diego—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Visit the Southwest Airlines® Help Center for helpful information and answers to frequently asked questions.
1EarlyBird Check-In® pricing starts at $15 one-way, and is subject to availability. Pricing may vary based on the popularity and length of each (one-way) flight. Please see optional travel charges for more details.
2Upgraded boarding prices and benefits are per eligible segment. Flights must be within 24 hours of departure to be eligible for upgraded boarding.
4Where available. Available only on WiFi-enabled aircraft. Limited-time offer.
5Due to licensing restrictions, on WiFi-enabled international flights, free live TV and iHeartRadio may not be available for the full duration of flight.
6Texting only allows access to iMessage and WhatsApp (which must be downloaded and activated before connecting to SouthwestWiFi).
7Internet access for $8 per device from takeoff to landing. Price is subject to change. May not be available for the full duration of flight. In order to provide a top-notch Internet experience, we prohibit access to certain high-bandwidth applications and websites. We also prohibit access to certain obscene or offensive content.
8Flights traveling 175 miles or less will have only water available. Complimentary snacks are served on flights over 175 miles. If you’re flying between Hawaii and the continental U.S., you’ll have even more snacks to choose from.
9Free same-day standby: You can list for same-day standby for an earlier flight via a Southwest Customer Service Agent at the airport or the Southwest app or mobile web. You must request to be added to the same-day standby list at least 10 minutes prior to the scheduled departure of your original flight or the no-show policy will apply. If using the app or mobile web, you must list your name 30 minutes ahead of scheduled departure. You will receive a message based on the contact preference selected during booking if you are cleared on the flight. Group bookings and Unaccompanied Minors are not eligible for same-day standby. You will be required to pay any government taxes and fees associated with these itinerary changes but refunds will be provided. Your original boarding position is not guaranteed on your standby flight. Southwest Business Customers booked through travel agencies may need to see a Southwest agent at the airport for a standby listing. See Southwest.com/standby for more details.