Cheap flights from Puerto Rico to Denver from $101

The cheapest month to fly to Denver from Puerto Rico is in March. Flight prices, which tend to average around $372, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in March, then you should wait until June to fly from Puerto Rico, when ticket prices are also cheap, with an average price of $404.

The cheapest day to depart on your flight to Denver is on a Thursday when prices can be found for as low as $534. 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 $738.

Fly from San Juan Luis Munoz Marin Intl to Denver Intl for the best Puerto Rico - Denver Intl flight prices

You are more likely to see cheaper flights to Denver from Puerto Rico when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $463 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Puerto Rico for as low as $310 on momondo.

There are 4 cabin classes available to choose from on Puerto Rico 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 63% on your flight if you consider stops on a Puerto Rico to Denver flight.

Frontier is the most popular carrier operating from Puerto Rico to Denver Intl

Frontier, United Airlines and American Airlines are the top three most popular airlines that fly to Denver from Puerto Rico according to our data. Frontier is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

As of February 2026, 1 flights take off from Puerto Rico and land in Denver each day. The most common flight departure time for this route is 2:00PM, with 100% of daily flights taking off in the afternoon.

The number of flights available between Puerto Rico and Denver is 7 per week as of February 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.