Cheap flights from San Francisco to Colorado from $99

The month of October is, on average, the cheapest month to fly to Colorado from San Francisco, with most prices found around $261. The month of January is another great option to travel to Colorado, with average flight prices from San Francisco averaging around $274.

The cheapest day to depart from San Francisco to Colorado is on a Wednesday when prices can be found for as low as $339. On the other hand, Sunday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $437.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $322. At noon is when there is more demand to fly to Colorado, so prices are often more expensive at around $438 per ticket.

Fly from San Francisco to Denver Intl for the best San Francisco - Colorado flight prices

You are more likely to see cheaper flights to Colorado from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $301 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from San Francisco for as low as $240 on momondo.

There are 4 cabin classes available to choose from on San Francisco to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Southwest, and Delta are the most popular carriers operating from San Francisco to Colorado

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Colorado from San Francisco according to our data. Frontier is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 7 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

30 flights are operational daily from San Francisco to Colorado as of September 2026. The most popular departure time for this route is 4:00PM, with 37% of flights per day taking off in the afternoon.

The number of flights available between San Francisco and Colorado is 214 per week as of September 2026. The most frequent departure day is Mon, with 29% of weekly flights leaving on this day.