Cheap flights from Idaho Falls to Colorado from $93

The month of March is, on average, the cheapest month to fly to Colorado from Idaho Falls, with most prices found around $220. The month of October is another great option to travel to Colorado, with average flight prices from Idaho Falls averaging around $229.

The cheapest day to depart from Idaho Falls to Colorado is on a Thursday when prices can be found for as low as $487. On the other hand, Sunday is the most expensive day to depart from Idaho Falls because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $624.

The cheapest time of day to fly to Colorado is in the afternoon when flights can be purchased for as low as $410. In the morning is when there is more demand to fly to Colorado, so prices are often more expensive at around $574 per ticket.

Fly from Idaho Falls Fanning Field to Denver Intl for the best Idaho Falls Fanning Field - Colorado flight prices

You are more likely to see cheaper flights to Colorado from Idaho Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $273 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Idaho Falls for as low as $185 on momondo.

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

United Airlines is the most popular carrier operating from Idaho Falls Fanning Field to Colorado

United Airlines, Allegiant Air and Delta are the top three most popular airlines that fly to Colorado from Idaho Falls according to our data. United Airlines is the first choice among our users, with 94% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 3 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

As of April 2026, there are 4 flights per day flying from Idaho Falls to Colorado. The most common time of day flights depart is 5:00PM, with 57% of flights taking off in the afternoon.

The number of flights available between Idaho Falls and Colorado is 31 per week as of April 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.