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139 € Cheap Flights from Knoxville to Harry Reid International

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      Travellers and cabin class, 1 Adult, Economy
      Allegiant Air
      Southwest Airlines

      Compare Knoxville to Harry Reid International flight deals

      Find the cheapest month or even day of the year to fly to Harry Reid International

      Book the best Harry Reid International fare with no extra fees

      Flight deals from Knoxville to Harry Reid International

      Looking for a cheap last-minute deal or the best return flight from Knoxville Airport to Harry Reid International Airport? If you want to travel next month, return fares start from 140 €. Find the lowest prices on one-way and return tickets right here.
      Las Vegas.139 € per passenger.Departing Sun, 15 Nov, returning Fri, 4 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Sun, 15 Nov, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 4 Dec, arriving in Knoxville.Price includes taxes and charges.From 139 €, select.
      Las Vegas.140 € per passenger.Departing Mon, 19 Oct, returning Thu, 29 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 19 Oct, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Thu, 29 Oct, arriving in Knoxville.Price includes taxes and charges.From 140 €, select.
      Las Vegas.149 € per passenger.Departing Sun, 25 Oct, returning Sun, 1 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Sun, 25 Oct, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Sun, 1 Nov, arriving in Knoxville.Price includes taxes and charges.From 149 €, select.
      Las Vegas.152 € per passenger.Departing Sun, 1 Nov, returning Fri, 13 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Sun, 1 Nov, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 13 Nov, arriving in Knoxville.Price includes taxes and charges.From 152 €, select.
      Las Vegas.155 € per passenger.Departing Mon, 8 Feb, returning Fri, 19 Feb.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 8 Feb, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 19 Feb, arriving in Knoxville.Price includes taxes and charges.From 155 €, select.
      Las Vegas.174 € per passenger.Departing Mon, 14 Dec, returning Fri, 18 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Dec, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 18 Dec, arriving in Knoxville.Price includes taxes and charges.From 174 €, select.
      Las Vegas.196 € per passenger.Departing Mon, 12 Apr, returning Fri, 23 Apr.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 12 Apr, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 23 Apr, arriving in Knoxville.Price includes taxes and charges.From 196 €, select.
      Las Vegas.196 € per passenger.Departing Sun, 20 Sep, returning Fri, 2 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Sun, 20 Sep, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 2 Oct, arriving in Knoxville.Price includes taxes and charges.From 196 €, select.
      Las Vegas.206 € per passenger.Departing Fri, 11 Sep, returning Thu, 24 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 11 Sep, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Thu, 24 Sep, arriving in Knoxville.Price includes taxes and charges.From 206 €, select.
      Las Vegas.207 € per passenger.Departing Fri, 8 Jan, returning Mon, 11 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 8 Jan, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 11 Jan, arriving in Knoxville.Price includes taxes and charges.From 207 €, select.
      Las Vegas.265 € per passenger.Departing Mon, 14 Dec, returning Mon, 4 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Dec, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 4 Jan, arriving in Knoxville.Price includes taxes and charges.From 265 €, select.
      Las Vegas.288 € per passenger.Departing Mon, 19 Apr, returning Mon, 3 May.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 19 Apr, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 3 May, arriving in Knoxville.Price includes taxes and charges.From 288 €, select.
      Las Vegas.288 € per passenger.Departing Mon, 3 May, returning Fri, 14 May.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 3 May, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 14 May, arriving in Knoxville.Price includes taxes and charges.From 288 €, select.
      Las Vegas.307 € per passenger.Departing Fri, 22 Jan, returning Mon, 8 Feb.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 22 Jan, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 8 Feb, arriving in Knoxville.Price includes taxes and charges.From 307 €, select.
      Las Vegas.325 € per passenger.Departing Mon, 15 Mar, returning Fri, 19 Mar.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 15 Mar, arriving in Harry Reid International.Inbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 19 Mar, arriving in Knoxville.Price includes taxes and charges.From 325 €, select.
      Las Vegas.343 € per passenger.Departing Tue, 16 Feb, returning Tue, 2 Mar.Return flight with United.Outbound indirect flight with United, departs from Knoxville on Tue, 16 Feb, arriving in Harry Reid International.Inbound indirect flight with United, departs from Harry Reid International on Tue, 2 Mar, arriving in Knoxville.Price includes taxes and charges.From 343 €, select.

      Find the cheapest month to fly from Knoxville to Harry Reid International

      We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Knoxville to Harry Reid International flights are currently cheapest in October.
      Sep
      from 206 €
      Oct
      from 140 €
      Nov
      from 152 €
      Dec
      from 174 €
      Jan
      from 207 €
      Feb
      from 155 €
      Mar
      from 325 €
      Apr
      from 196 €
      May
      from 288 €
      Jun
      from 354 €
      Jul
      Find prices
      Aug
      Find prices

      Direct flights from Knoxville to Harry Reid International

      Allegiant Air
      Southwest Airlines

      Knoxville to Harry Reid International: Alternative routes

      Compare routes from Knoxville to Las Vegas below. You may find an airport to fly into that's cheaper, faster, or easier than Harry Reid International.

      Harry Reid International

      4km from central Las Vegas
      ClosestCheapest
      from 139 €
      Search flights

      North Las Vegas

      11km from central Las Vegas
      Search flights

      Henderson Executive

      16km from central Las Vegas
      Search flights

      Boulder City Municipal

      34km from central Las Vegas
      Search flights

      Knoxville to Las Vegas: Flight information

      The things to know before you go.
      Cheapest flight found139 €
      Cheapest month to flyNovember
      Average flight time4 hrs, 25 mins
      Most popular airlineAllegiant Air
      Average flights per week5

      Finding cheap flights from Knoxville to Harry Reid International: Frequently asked questions

      The best price we found for a return flight from Knoxville to Harry Reid International is 139 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
      4 hours and 25 minutes is the average flight time from Knoxville to Harry Reid International.
      Allegiant Air and Southwest Airlines fly direct from Knoxville to Harry Reid International.
      As of September 2026, there are 5 flights per week flying from Knoxville to Harry Reid International.
      The cheapest month to fly from Knoxville to Harry Reid International is usually November.
      After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Knoxville Airport to Harry Reid International Airport on Sunday, 15 November 2026.
      Yes – the average flight time is 4 hours and 25 minutes.
      We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Harry Reid International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

      We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Las Vegas is around 40 days in advance, so don’t leave your flight to the last minute.

      Currently, Allegiant Air offers the cheapest flight tickets to Harry Reid International.

      Flying from Knoxville Airport (TYS) to Harry Reid International Airport (LAS): what you need to know

      • Hop on a direct flight from Knoxville Airport to Harry Reid International Airport and you'll be travelling for an average of 4 hours 15 minutes.

      • The timezone in Las Vegas is UTC-8, which is three hours behind Knoxville.

      • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Show up at the airport on time to catch your TYS to LAS flight.

      • During popular months like October, it's a good idea to get to the airport earlier than usual. Arrive two hours before domestic departures and four hours ahead for international flights when you fly during a high season in general.

      • Travelling to Las Vegas (and then discovering more of the United States!) is a cinch with Allegiant Air. This popular carrier has direct flights from Knoxville Airport to Harry Reid International Airport.

      • Most travellers choose to travel with Allegiant Air on this route.

      • With a dependable 83.78% of services arriving as scheduled, Allegiant Air is the most punctual carrier offering TYS to LAS flights.

      How to find the cheapest flights from Knoxville Airport (TYS) to Harry Reid International Airport (LAS)

      • 57 € is currently the lowest price for a one-way Knoxville Airport to Harry Reid International Airport flight. Return flights start from 139 €. These prices can change based on demand.

      • Get cheap tickets from TYS to LAS by booking two months ahead. Based on our research, that's the sweet spot for picking up a bargain.

      • Schedule your trip for July. That's the cheapest month for flights from Knoxville Airport to Harry Reid International Airport. If you have flexibility with your dates, try out the 'Whole month' tool to find the cheapest airfare across each month.

      • There's no need to check every day to see if fares have dropped when you create a Price Alert. We'll send you an update the moment the price changes on cheap flights from TYS to LAS.

      • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Knoxville Airport to Harry Reid International Airport.

      Handy information about Knoxville Airport (TYS)

      • TYS is located at 2055 Alcoa Highway.

      • 76% of flights departing from Knoxville Airport touch down at their destination on schedule.

      • Central Knoxville to Knoxville Airport is approximately 24 kilometres. Depending on traffic, it'll take you about 25 minutes to get there if you're driving, ride-sharing or catching a taxi.

      • You can expect a journey time of around 50 minutes on public transport.

      • Searching for a handy hotel close to TYS? If you've booked an early flight from Knoxville Airport to Harry Reid International Airport, these accommodation options will have you sleeping moments from your departure gate:

      Arriving at Harry Reid International Airport (LAS)

      Getting from Harry Reid International Airport (LAS) to central Las Vegas

      • LAS is located at 5757 Wayne Newton Boulevard.

      • Harry Reid International Airport is approximately 8 kilometres from central Las Vegas. The drive time takes about 10 minutes.

      • If you're taking public transport, expect a journey time of around 25 minutes.

      When to fly to Harry Reid International Airport (LAS)

      • It's time to work out your dates for your flight from Knoxville Airport to Harry Reid International Airport. April is the most popular month to visit Las Vegas. If you want a quieter vibe, go in March.

      • The warmest month in Las Vegas is July, with temperatures ranging between 23ºC (73ºF) and 43ºC (109ºF). Book your flights from Knoxville Airport to Harry Reid International Airport in this month if this is the type of weather you enjoy.

      • Look for cheap tickets from TYS to LAS in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 0ºC (32ºF) and 16ºC (61ºF) on average.

      Explore more of the United States

      • Los Angeles is just one of the many cities in the United States waiting to be discovered once you've seen Las Vegas. Around 370 kilometres away to the south-west, its top attractions include Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

      • Around 418 kilometres south-east of Las Vegas, Phoenix is another favourite stop in the United States. Experience this destination's highlights firsthand at Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

      Prices shown on this page are estimated lowest prices only. Found in the last 12 days.