SAN to DEN Flight Deals: From Sunny San Diego to the Mile High City
Cheapest flight found
$63
Last updated Mar 13, 2026
Prices by Month
Price History
Tracking the May 7, 2026 departure — the cheapest date we found.
Price Behavior: SAN → DEN
Based on 6 months of fare data collected by Trip Manta.
Lowest Fare
$63
Highest Fare
$133
Median Fare
$124
Price Spread
$70
Prices vary significantly — hourly tracking is especially valuable here.
Cheapest month to fly: May 2026 (from $63)
Most expensive month: April 2026 (from $133)
Biggest price drop caught: $35 between consecutive checks
Most frequent cheapest airline: Frontier
What This Means for You
Flights from San Diego to Denver range from $63 to $133, a $70 spread across the months we track. If your dates are flexible, May 2026 tends to have the lowest fares. Because prices on this route change significantly, setting up hourly price alerts gives you the best chance of catching a short-lived drop before it corrects. We have caught drops as large as $35 between hourly checks on this route.
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From
San Diego (SAN)
To
Denver (DEN)
Airport Information
San Diego (SAN)
San Diego International Airport (SAN) is famous for its breathtaking approach over the downtown skyscrapers and its incredibly convenient location just three miles from the city's heart. As a major gateway to the Pacific, SAN provides a modern travel experience with its Terminal 2 expansion, featuring local San Diego eateries and sustainable design elements. It serves as a primary point of departure for those looking to swap the coastal breeze for mountain air.
Denver (DEN)
Denver International Airport (DEN) is an architectural marvel characterized by its white fabric roof, which is designed to resemble the snowy peaks of the Rockies. Located about 25 miles from downtown, it is one of the busiest airports in the world, serving as a massive connecting point for domestic and international flights. Passengers can enjoy a wide array of amenities, including an outdoor plaza, rotating art exhibits, and a seamless connection to the city via the A-Line commuter rail.
Frequently Asked Questions
How long is the direct flight from San Diego to Denver?
A non-stop flight typically takes approximately 2 hours and 20 minutes to 2 hours and 35 minutes, depending on wind conditions.
Which airlines offer non-stop service between SAN and DEN?
Southwest Airlines, United Airlines, and Frontier Airlines frequently offer direct, non-stop flights between these two cities.
Is there a time difference between San Diego and Denver?
Yes, Denver is in the Mountain Time Zone, which is one hour ahead of San Diego's Pacific Time Zone.
What is the best way to get from Denver airport to downtown?
The RTD A-Line commuter train is the most efficient method, taking about 37 minutes to reach Denver Union Station in the city center.
When is the cheapest month to fly from San Diego to Denver?
Usually, January and February offer the lowest prices, provided you avoid the peak holiday travel dates at the start of the year.
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Our Methodology
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How Often Do Prices Drop?
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