Cheap flights from San Antonio to Colorado from $48

The month of February is, on average, the cheapest month to fly to Colorado from San Antonio, with most prices found around $210. The month of April is another great option to travel to Colorado, with average flight prices from San Antonio averaging around $220.

The cheapest day to depart from San Antonio to Colorado is on a Thursday when prices can be found for as low as $317. On the other hand, Sunday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $412.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $261. At noon is when there is more demand to fly to Colorado, so prices are often more expensive at around $553 per ticket.

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

You are more likely to see cheaper flights to Colorado from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $238 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from San Antonio for as low as $174 on momondo.

There are 4 cabin classes available to choose from on San Antonio 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, Delta, and Southwest are the most popular carriers operating from San Antonio to Colorado

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Colorado from San Antonio according to our data. Frontier is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 5 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

The number of flights available between San Antonio and Colorado is 9 per day as of September 2026. The most frequent departure time is 9:00AM, with 40% of daily flights leaving in the afternoon.

The number of flights available between San Antonio and Colorado is 66 per week as of September 2026. The most frequent departure day is Fri, with 23% of weekly flights leaving on this day.