Compare Cheap Flights from San Diego to Denver
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Round Trip Flights from San Diego to Denver
Last updated on Thursday 11/12/2026 at 05:00 AM, the fares mentioned above are for flight tickets and inclusive of fuel surcharges, service fee and taxes. Based on historical data, these fares are subject to change without prior notice and cannot be guaranteed at the time of booking. Kindly go through our terms and conditions before booking.
Book San Diego To Denver Flights
Do you know a city that sits just one mile above sea level? Denver- The Mile High City is exactly one mile high from the 13th step on the west side of the State Capitol Building. Many other facts make it an intriguing city to explore. Denver has 300 days of sunshine in a year, it sits close to the foothills of the Rocky Mountains, and overlooks more than 200 named peaks.
The city is full of parks and gardens (20,000 acres), while 14,000 acres of lush land outside Denver add more to the greenery around. Travelers can hike up the hills and mountains, or add on adventures like mountain biking or skiing, and snowboarding. Places such as Red Rocks Park and Amphitheatre, Washington Park, Stranahan's Whiskey Distillery & Cocktail Bar, and Denver Botanic Gardens are a few attractions that are a must-visit.
For those planning a vacation from San Diego, you can book cheap flights to Denver online. Usually, the city experiences extremely hot summers from June to September. However, this is also the time for long scenic drives, festivities, and wine-tasting tours. This means lights from San Diego to Denver can be expensive. Similarly, winters from December to February offer pleasant weather for a relaxing vacation; however, the fares for SAN to DEV flight tickets are comparatively cheaper. To specify the months, November and March are the best times to get cheap flights from San Diego to Denver (SAN to DEN). Denver International Airport, which is also one of the largest airports in the US, serves Denver, offering frequent connections from San Diego International Airport. You can compare SAN to DEN flight fares online with Packedbag and save on your flight expenses. For more, call us anytime. Our team is here to assist you 24x7.
Finding Cheap Flights From San Diego To Denver : Frequently Asked Questions
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How much are round-trip flights from San Diego to Denver?
Average cost of a round-trip flight from San Diego to Denver is around $438.
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Which upcoming date is cheapest to fly from San Diego to Denver?
In the next 90 days, flights from San Diego to Denver on will be the cheapest on February 06, 2027, December 11, 2026, and December 16, 2026.
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What?s the cheapest day of the week to fly from San Diego to Denver?
On an average, flights from San Diego to Denver tend to be cheapest on Friday.
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Which airlines offers the cheapest fares from San Diego to Denver?
At the moment, FRONTIER AIRLINES and SOUTHWEST AIRLINES offer the cheapest flights from San Diego to Denver.
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When is the peak season for traveling from San Diego to Denver?
November to January is the peak season to travel from San Diego to Denver.
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When does the first flight depart from San Diego to Denver?
The first flight from San Diego to Denver departs at 06:15 AM.
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When does the last flight from San Diego to Denver depart?
The last flight from San Diego to Denver departs at 01:05 PM.
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Cheapest Months to fly to Denver
The cheapest months to visit Denver are from February through April.
* The mentioned flight facts are based on the last 3 months' data. Information regarding the highest and lowest booking months is based on the last 12 months' data.
Major Carriers Operating Flights From San Diego To Denver
ALASKA AIRLINES
$164
$437
AMERICAN AIRLINES
$165
$486
UNITED AIRLINES
$203
$467
Low Cost Carriers Operating Flights From San Diego To Denver
FRONTIER AIRLINES
$106
$278
SOUTHWEST AIRLINES
$156
$242
ALASKA AIRLINES
$164
$437
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