£59 Cheap Flights from Denver (DEN) to San Diego (SAN)

You can find one-way and return flights from Denver, CO (DEN) to San Diego, CA (SAN) with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when DEN to SAN ticket fares go up or down.

The cheapest months to fly from Denver, CO (DEN) to San Diego, CA (SAN) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

Enter DEN to SAN and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

Alaska Airlines is one of the cheapest airlines offering nonstop return flights from Denver, CO (DEN-Denver Intl.) to San Diego, CA (SAN-San Diego Intl.), with tickets starting from around £86 for flights that can be booked for departure within the next year. JetBlue Airways offers one of the cheapest connecting return flights on this route, with tickets starting from around £247. These prices are per adult in economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.

To find a cheap flight from Denver, CO (DEN) to San Diego, CA (SAN), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The cheapest months to fly from Denver, CO (DEN-Denver Intl.) to San Diego, CA (SAN-San Diego Intl.) are typically January and February, with average return flights around £151. However, the most popular months for this route are September and August, meaning you'll find plenty of flight options during those times. If you're looking for the best value, aiming for January or February will help you save on your fare.

Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Denver, CO (DEN) to San Diego, CA (SAN). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.

Flying nonstop from DEN to SAN takes around 2 hours 30 minutes, with the route covering approximately 1,371 kilometers. Flights with a layover typically take 5 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Select the "Business class" and "First class" filters when looking for Denver, CO (DEN) to San Diego, CA (SAN) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.

It's easy to earn miles on a Denver, CO (DEN) to San Diego, CA (SAN) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

Typically, booking a last minute flight from Denver, CO (DEN) to San Diego, CA (SAN) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Denver, CO (DEN) to San Diego, CA (SAN) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Denver, CO (DEN) to San Diego, CA (SAN) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.