Cheap flights from Philadelphia to Colorado from $131

The month of April is, on average, the cheapest month to fly to Colorado from Philadelphia, with most prices found around $336. The month of May is another great option to travel to Colorado, with average flight prices from Philadelphia averaging around $340.

The cheapest day to depart from Philadelphia to Colorado is on a Wednesday when prices can be found for as low as $413. On the other hand, Sunday is the most expensive day to depart from Philadelphia because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $469.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $277. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $464 per ticket.

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

You are more likely to see cheaper flights to Colorado from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $381 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Philadelphia for as low as $323 on momondo.

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

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

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Colorado from Philadelphia according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 6 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 Philadelphia and Colorado is 15 per day as of October 2026. The most frequent departure time is 8:00AM, with 41% of daily flights leaving at noon.

107 flights are operational weekly from Philadelphia to Colorado as of October 2026. The most popular departure day for this route is Fri, with 17% of flights per week taking off on this day.