Cheap flights from Las Vegas to Idaho from $49

In general, May is the cheapest month to fly from Las Vegas to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $28. If you don’t want to visit Idaho in May, then you should wait until August to fly from Las Vegas, when ticket prices are also cheap, with an average price of $34.

Our data shows that Friday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $160. On the other hand, Tuesday is the most expensive day to depart from Las Vegas because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $291.

According to our data, the cheapest time of day to fly to Idaho is in the evening. momondo users have found flights departing from Las Vegas to Idaho in the evening for as low as $174. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $252 per ticket.

Fly from Las Vegas Harry Reid Intl to Idaho Falls Fanning Field for the best Las Vegas Harry Reid Intl - Idaho flight prices

You are more likely to see cheaper flights to Idaho from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $214 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Las Vegas for as low as $112 on momondo.

Southwest, Delta, and United Airlines are the most popular carriers operating from Las Vegas Harry Reid Intl to Idaho

Southwest, Allegiant Air and Alaska Airlines are the top three most popular airlines that fly to Idaho from Las Vegas according to our data. Southwest is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

As of May 2026, there are 5 flights per day flying from Las Vegas to Idaho. The most common time of day flights depart is 2:00PM, with 48% of flights taking off in the afternoon.

As of May 2026, there are 41 flights per week flying from Las Vegas to Idaho. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.