Cheap flights from Pennsylvania to Colorado from $105

The month of October is, on average, the cheapest month to fly to Colorado from Pennsylvania, with most prices found around $334. The month of January is another great option to travel to Colorado, with average flight prices from Pennsylvania averaging around $355.

The cheapest day to depart from Pennsylvania to Colorado is on a Friday when prices can be found for as low as $377. On the other hand, Sunday is the most expensive day to depart from Pennsylvania because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $453.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $276. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $445 per ticket.

Fly from Allentown-Bethlehem to Denver Intl for the best Pennsylvania - Colorado flight prices

You are more likely to see cheaper flights to Colorado from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $356 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Pennsylvania for as low as $283 on momondo.

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

Frontier, Southwest, and Allegiant Air are the most popular carriers operating from Pennsylvania to Colorado

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Colorado from Pennsylvania according to our data. United Airlines is the first choice among our users, with 34% 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.

The number of flights available between Pennsylvania and Colorado is 89 per day as of July 2026. The most frequent departure time is 8:00AM, with 41% of daily flights leaving in the afternoon.

As of July 2026, there are 627 flights per week flying from Pennsylvania to Colorado. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.