Cheap flights from Idaho to Las Vegas from $33

The month of September is, on average, the cheapest month to fly to Las Vegas from Idaho, with most prices found around $198. The month of October is another great option to travel to Las Vegas, with average flight prices from Idaho averaging around $209.

Our data shows that Tuesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $305. Flights from Idaho to Las Vegas on a Thursday will generally be more expensive and average around $399. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Las Vegas is in the evening when flights can be purchased for as low as $286. Flights to Las Vegas are more costly in the morning, with an average ticket price of $387. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Las Vegas from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $281 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Idaho for as low as $217 on momondo.

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

Allegiant Air, Alaska Airlines, and Breeze Airways are the most popular carriers operating from Idaho to Las Vegas Harry Reid Intl

Southwest, Allegiant Air and Alaska Airlines are the top three most popular airlines that fly to Las Vegas from Idaho according to our data. Southwest is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 10 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 5 flights per day flying from Idaho to Las Vegas. The most common time of day flights depart is 10:00AM, with 50% of flights taking off at noon.

36 flights are operational weekly from Idaho to Las Vegas as of August 2026. The most popular departure day for this route is Thu, with 22% of flights per week taking off on this day.