SAN to DEN Flight Deals: From Sunny San Diego to the Mile High City
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$62.98
Last updated Feb 16, 2026
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Tracking the May 7, 2026 departure — the cheapest date we found.
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San Diego (SAN)
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Denver (DEN)
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Search FlightsSpanning the distance between the sun-drenched beaches of Southern California and the majestic peaks of the Rocky Mountains, the flight from San Diego International (SAN) to Denver International (DEN) is a popular corridor for travelers of all stripes. This two-and-a-half-hour journey transports you from a Mediterranean climate to a high-altitude urban center known for its rugged outdoor spirit and sophisticated cultural offerings. Whether you are heading to Denver for a corporate summit, a weekend of hiking in the nearby foothills, or to catch a game at Coors Field, the frequent flight schedule between these two major Western hubs makes planning your itinerary remarkably straightforward and flexible for any budget.
Travel Tips
When flying from San Diego to Denver, it is wise to arrive at SAN at least two hours early, especially during the morning rush, as the airport's proximity to downtown can sometimes lead to unexpected traffic congestion. Upon landing in Denver, give your body time to acclimate to the 5,280-foot elevation by drinking plenty of water and limiting strenuous activity during your first 24 hours to avoid altitude sickness. For the best airfare, consider flying on a Tuesday or Wednesday when demand is lower and airlines are more likely to offer discounted seat inventories. Additionally, if you plan on exploring the mountains beyond the city, renting a car with all-wheel drive is highly recommended during the winter season to safely navigate the snow-covered passes leading out of the Mile High City.
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.
Seasonal Pricing Patterns
Travelers will typically find the highest airfares on the SAN to DEN route during the peak winter ski season, particularly in December and March, as well as during the height of summer in July. For those seeking the best value, the shoulder seasons of April to May and September to October offer a sweet spot of pleasant weather and lower ticket prices. Booking your journey at least three to four weeks in advance is generally the most effective strategy for securing the lowest possible economy fares.
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.