Cheap flights from Pennsylvania to Colorado from $99

The month of January is, on average, the cheapest month to fly to Colorado from Pennsylvania, with most prices found around $356. The month of February is another great option to travel to Colorado, with average flight prices from Pennsylvania averaging around $364.

The cheapest day to depart from Pennsylvania to Colorado is on a Saturday when prices can be found for as low as $405. 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 $467.

The cheapest time of day to fly to Colorado is in the evening when flights can be purchased for as low as $278. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $461 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 $378 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 $317 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.

Allegiant Air, American Airlines, and United Airlines 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 35% 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 11 per day as of September 2026. The most frequent departure time is 8:00AM, with 39% of daily flights leaving in the afternoon.

As of September 2026, there are 79 flights per week flying from Pennsylvania to Colorado. The most common day of the week flights depart is Mon, with 28% of flights taking off on this day.