Cheap flights from Knoxville to Las Vegas from $72

The month of August is, on average, the cheapest month to fly to Las Vegas from Knoxville, with most prices found around $291. The month of February is another great option to travel to Las Vegas, with average flight prices from Knoxville averaging around $328.

Our data shows that Wednesday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $181. Flights from Knoxville to Las Vegas on a Thursday will generally be more expensive and average around $360. 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 $256. Flights to Las Vegas are more costly in the afternoon, with an average ticket price of $421. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl for the best Knoxville McGhee Tyson - Las Vegas Harry Reid Intl flight prices

You are more likely to see cheaper flights to Las Vegas from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $379 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Knoxville for as low as $241 on momondo.

There is only 1 cabin class available to choose from on Knoxville to Las Vegas flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Knoxville to Las Vegas.

As of October 2026, prices for Knoxville to Las Vegas flights are approximately 13% cheaper when compared to flights at the same time last year.

Allegiant Air is the most popular carrier operating from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl

Allegiant Air, American Airlines and Delta are the top three most popular airlines that fly to Las Vegas from Knoxville according to our data. Allegiant Air is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Las Vegas. Keep in mind that there are 6 different airlines that fly to Las Vegas on a routine basis, so you have a few additional options to choose from.

Dallas (DFW) was the most common stop: 80% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $310.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 6h 53m.

Dallas (DFW) has the shortest average layover time for this route: 1h 47m.