Cheap flights from San Francisco to Denver from $87

The cheapest month to fly to Denver from San Francisco is in October. Flight prices, which tend to average around $224, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in October, then you should wait until September to fly from San Francisco, when ticket prices are also cheap, with an average price of $229.

The cheapest day to depart on your flight to Denver is on a Saturday when prices can be found for as low as $315. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $382.

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $282. Flights at noon are often more expensive with an average ticket price of $414.

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

You are more likely to see cheaper flights to Denver from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $260 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from San Francisco for as low as $206 on momondo.

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

You could potentially save up to 11% on your flight if you consider stops on a San Francisco to Denver flight.

As of April 2026, prices for San Francisco to Denver flights are approximately 72% more expensive when compared to flights at the same time last year.

Southwest and Alaska Airlines are the most popular carriers operating from San Francisco to Denver Intl

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Denver from San Francisco according to our data. Frontier is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 8 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between San Francisco and Denver have experienced a delay on any given week. The average delay length over the past 12 months has been 145 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

As of April 2026, there are 46 flights per day flying from San Francisco to Denver. The most common time of day flights depart is 2:00PM, with 37% of flights taking off in the afternoon.

The number of flights available between San Francisco and Denver is 325 per week as of April 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.