Cheap flights from Montana to Las Vegas from $43

The month of August is, on average, the cheapest month to fly to Las Vegas from Montana, with most prices found around $169. The month of July is another great option to travel to Las Vegas, with average flight prices from Montana averaging around $192.

Our data shows that Thursday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $266. Flights from Montana to Las Vegas on a Saturday will generally be more expensive and average around $400. 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 afternoon when flights can be purchased for as low as $243. Flights to Las Vegas are more costly in the evening, with an average ticket price of $357. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Billings Logan Intl to Las Vegas Harry Reid Intl for the best Montana - Las Vegas Harry Reid Intl flight prices

You are more likely to see cheaper flights to Las Vegas from Montana when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $254 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Montana for as low as $189 on momondo.

There is only 1 cabin class available to choose from on Montana 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, Delta, and Alaska Airlines are the most popular carriers operating from Montana to Las Vegas Harry Reid Intl

Allegiant Air, Delta and United Airlines are the top three most popular airlines that fly to Las Vegas from Montana according to our data. Allegiant Air is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 5 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

The number of flights available between Montana and Las Vegas is 1 per day as of August 2026. The most frequent departure time is 10:00AM, with 69% of daily flights leaving at noon.

The number of flights available between Montana and Las Vegas is 12 per week as of August 2026. The most frequent departure day is Thu, with 33% of weekly flights leaving on this day.