Cheap flights from Colorado to the United States from $48

In general, October is the cheapest month to fly from Colorado to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $263. If you aren’t able to travel during the month of October, then book flights to United States from Colorado during August instead. Flights to United States in August, while not as cheap as those in October, still average around $263.

According to our data, Friday is the cheapest day to fly to United States from Colorado. The lowest ticket price found for a Friday departure recently was $339. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $501. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the afternoon when flights can be purchased for as low as $286. Try not to purchase tickets at noon because they tend to be around $523. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Denver Intl to Las Vegas Harry Reid Intl for the best Colorado - United States flight prices

You are more likely to see cheaper flights to United States from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around $271 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from Colorado for as low as $228 on momondo.

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

Frontier, Southwest, and United Airlines are the most popular carriers operating from Colorado to United States

Frontier, United Airlines and Southwest are the top three most popular airlines that fly to United States from Colorado according to our data. Frontier is the first choice among our users, with 50% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 10 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

343 flights are operational daily from Colorado to United States as of June 2026. The most popular departure time for this route is 1:00PM, with 39% of flights per day taking off at noon.

As of June 2026, there are 2,406 flights per week flying from Colorado to United States. The most common day of the week flights depart is Mon, with 18% of flights taking off on this day.