Cheap Alaska Airlines flights Denver (DEN) to San Diego (SAN)

Set the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines return flights from $182 from DEN to SAN. Affordable one-way tickets are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for one-way or return flights to San Diego in January or November. You could find a cheap fare with Alaska Airlines during these quieter months.

For cheap Alaska Airlines fares from Denver Intl. Airport (DEN) to San Diego Intl. Airport (SAN), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Simply enter your dates, hit search and check “Nonstop” on Expedia to browse any direct flights from DEN to SAN with Alaska Airlines or another airline.

Find Alaska Airlines’s earliest flights from DEN to SAN by checking our “Early Morning” and “Morning” filters. Not only will you arrive at your destination sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

San Diego Intl. Airport (SAN) is the main San Diego hub for Alaska Airlines flights from Denver Intl. Airport (DEN).

Heading from DEN to SAN with Alaska Airlines comes with plenty of perks, including a rewarding loyalty program and an excellent in-flight experience. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That’s on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of booking, but your airline may charge a fee after that. For more details about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to make changes without being charged, check the “Changes included” and “No cancel fee” filters when organizing your next escape.