Cheap Flights from Denver International (DEN) to San Diego (SAN)

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Flight deals from Denver International to San Diego

Looking for a cheap last-minute deal or the best round-trip flight from Denver International to San Diego? Find the lowest prices on one-way and round-trip tickets right here.

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Find the cheapest month to fly from Denver International to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Denver International to San Diego flights are currently cheapest in May.

Direct flights from Denver International to San Diego

Alternative Denver International to San Diego routes

Looking for the cheapest, fastest or easiest route from Denver International to San Diego? You could fly into the following airports instead.

Denver to San Diego: Flight information

The things to know before you go.
Cheapest flight found$56
Cheapest month to flyMay
Average flight time2 hrs, 25 mins
Most popular airlineSouthwest Airlines
Average flights per week188

Finding cheap flights from Denver International to San Diego: Frequently asked questions

There are 3 airports in San Diego: San Diego International, El Cajon and McClellan – Palomar.
The best price we found for a round-trip flight from Denver International to San Diego is $56. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 25 minutes is the average flight time from Denver International to San Diego.
Southwest Airlines, United and Air Canada fly direct from Denver International to San Diego.
There are 188 flights per week flying from Denver International to San Diego, as of May 2024.
The cheapest month to fly from Denver International to San Diego is usually May.
If you're flying from Denver International Airport, the cheapest airport near San Diego is San Diego International – which is 2.5 miles away from the center of San Diego. We've found flights to this airport from $56.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Denver International Airport to San Diego on Tuesday, May 21, 2024.
Yes – the average flight time is 2 hours and 25 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to San Diego.

Booking Your Flight

Flying from mountainous Denver to the breezy seaside San Diego is a smooth and easy time. When you fly on this route, you’ll land at the San Diego International Airport and have your pick from a few different carriers:

  • United
  • Frontier
  • Spirit
  • American Airlines
  • Volaris

All flights along this route are direct, so you won’t need to worry about layovers. You’ll have your pick of flight times at any time of day that you prefer to fly, though it’s important to remember that San Diego’s time zone is one hour behind.

Leaving the Mountain City

Denver International Airport has three concourses, but you’ll probably depart from Concourse A. Concourse A also happens to be the busiest concourse, and also the concourse with an abundance of dining and shopping options. If you think you’re in the wrong concourse, the concourses are connected by a tramway which runs 24/7.

If you’re interested in art, there are murals on every wall of the airport, some of which are quite enjoyable.

Be sure to have your driver’s license ready so that you can board the plane. If you don’t have any summer clothing packed, you should probably pick some up, too—San Diego is warm, sunny, and a joy nearly all year long.

Arriving in Sunny San Diego

You’ll find yourself in Terminal 1 at the San Diego International Airport. Pick up your bags, and get ready to hop into a cab, call a rideshare, or rent a car. Rideshare apps are especially popular in San Diego, and they’ll be much cheaper than cabs or rental cars in addition to being quick and ubiquitous. Be aware that despite the abundance of rideshare cars, surge pricing is typically in effect 100% of the time around the airport.

 You’ll find that the traffic in San Diego is the harshest around rush hour, and is only moderate during other times of the day. Getting to downtown shouldn’t take too long once you clear the clump of traffic immediately surrounding the airport, although if you booked a hotel, there’s a good chance that you’ll have to go a bit farther than downtown.

Exploring San Diego

San Diego is a more expensive city than Denver, but not by much. Though lodging can get expensive, it’s easy to find a decent lunch for $10 and a good dinner for $30.

Expect to spend on transit very frequently if you don’t rent a car—the city has a good amount of sprawl.


More flight options

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.