Cheap Flights from Denver (DEN) to San Diego (SEE)

Popular airlines from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Diego Intl. SAN. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $127
SAN
San Diego Intl.
CheapestClosest
Average driving time to city center5 min
Flights from $127
Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $305
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $305
Select flight to McClellan-Palomar CLD. Average driving time to city center is 38 minutes. Flights from $229
CLD
McClellan-Palomar
Average driving time to city center38 min
Flights from $229
Flights from Denver (DEN) to San Diego (SEE)
Origin airport
Denver Intl.
Destination airport
Gillespie Field
Distance
837 mi

Denver to San Diego Flights

The cheapest times to fly from Denver to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Denver to San Diego are during the month of . You can find some of the cheapest flights from Denver to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to San Diego

Sunday is one of the best days to book for cheap flights from Denver to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Denver to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Denver to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Denver to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Denver to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field) cost?
Snag a cheap one-way flight or cheap return flight from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between DEN and SEE. You'll often find the lowest fares during the off-season.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)?
To find the cheapest airline flying from DEN to SEE, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)?
Direct flights from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DEN to SEE?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on a range of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)?
To land at San Diego, CA (SEE-Gillespie Field) without delays, pick a flight that leaves from Denver Intl. Airport (DEN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Diego County from Denver Intl. Airport (DEN)?
Check out your flight options from Denver Intl. Airport (DEN) to San Diego Intl. Airport (SAN). This is the only airport in San Diego County you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field) last-minute?
Booking your flight from DEN to SEE right before your journey is generally more expensive. But if you're flexible with your departure times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a DEN to SEE flight and hotel package?
You'll generally save money by securing a DEN to SEE flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred flights and accommodations, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to San Diego, CA (SEE-Gillespie Field)?
If you booked your DEN to SEE flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.