Cheap flights from South Dakota to Las Vegas from $54

The month of November is, on average, the cheapest month to fly to Las Vegas from South Dakota, with most prices found around $225. The month of January is another great option to travel to Las Vegas, with average flight prices from South Dakota averaging around $236.

Our data shows that Sunday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $142. Flights from South Dakota to Las Vegas on a Wednesday will generally be more expensive and average around $346. 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 $192. Flights to Las Vegas are more costly at noon, with an average ticket price of $266. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Rapid City to Las Vegas Harry Reid Intl for the best South Dakota - Las Vegas Harry Reid Intl flight prices

You are more likely to see cheaper flights to Las Vegas from South Dakota when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $314 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from South Dakota for as low as $231 on momondo.

There is only 1 cabin class available to choose from on South Dakota 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 is the most popular carrier operating from South Dakota to Las Vegas Harry Reid Intl

Allegiant Air, United Airlines and American Airlines are the top three most popular airlines that fly to Las Vegas from South Dakota according to our data. Allegiant Air is the first choice among our users, with 61% 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.

2 flights are operational weekly from South Dakota to Las Vegas as of August 2026. The most popular departure day for this route is Thu, with 50% of flights per week taking off on this day.

The flight from South Dakota to Las Vegas depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Rapid City (a popular airport in South Dakota) to Las Vegas (the most popular airport in Las Vegas), then the flight time is 2h 21m on average. If you fly from Sioux Falls (another popular airport in South Dakota) to Las Vegas, then the average flight time is 2h 53m.