Cheap flights from Washington, D.C. Reagan-National Airport to Colorado from $131

The month of February is, on average, the cheapest month to fly to Colorado from Washington, D.C. Reagan-National Airport, with most prices found around $234. The month of January is another great option to travel to Colorado, with average flight prices from Washington, D.C. Reagan-National Airport averaging around $238.

The cheapest day to depart from Washington, D.C. Reagan-National Airport to Colorado is on a Tuesday when prices can be found for as low as $312. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. Reagan-National Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $355.

The cheapest time of day to fly to Colorado is in the morning when flights can be purchased for as low as $319. In the afternoon is when there is more demand to fly to Colorado, so prices are often more expensive at around $350 per ticket.

Fly from Washington, D.C. Reagan-National to Denver Intl for the best Washington, D.C. Reagan-National - Colorado flight prices

You are more likely to see cheaper flights to Colorado from Washington, D.C. Reagan-National Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $340 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Washington, D.C. Reagan-National Airport for as low as $291 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. Reagan-National Airport to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, United Airlines, and Delta are the most popular carriers operating from Washington, D.C. Reagan-National to Colorado

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to Colorado from Washington, D.C. Reagan-National Airport according to our data. Frontier is the first choice among our users, with 80% 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 Washington, D.C. Reagan-National Airport and Colorado is 5 per day as of October 2026. The most frequent departure time is 4:00PM, with 44% of daily flights leaving at noon.

As of October 2026, there are 36 flights per week flying from Washington, D.C. Reagan-National Airport to Colorado. The most common day of the week flights depart is Fri, with 36% of flights taking off on this day.