Cheap flights from Knoxville to Las Vegas from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Las Vegas departing on 11/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Multiple Airlines Logo
12:50 pm - 11:06 amTYS-LAS
25h 16m2 stops
Multiple Airlines Logo
10:46 am - 5:32 pmLAS-TYS
3h 46mnonstop
$253Multiple Airlines
Find Deal
Mon, Nov 17 - Fri, Nov 21
Multiple Airlines Logo
11:24 am - 10:10 pmTYS-LAS
13h 46m1 stop
Multiple Airlines Logo
3:06 pm - 4:03 pmLAS-TYS
21h 57m1 stop
$254Multiple Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Multiple Airlines Logo
6:33 pm - 2:40 pmTYS-LAS
23h 07m2 stops
Multiple Airlines Logo
10:19 am - 5:02 pmLAS-TYS
3h 43mnonstop
$257Multiple Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
Multiple Airlines Logo
2:22 pm - 10:07 amTYS-LAS
22h 45m2 stops
Multiple Airlines Logo
10:46 am - 5:32 pmLAS-TYS
3h 46mnonstop
$258Multiple Airlines
Find Deal
Mon, Nov 17 - Fri, Nov 21
Frontier Logo
4:26 pm - 11:42 pmTYS-LAS
10h 16m1 stop
Frontier Logo
6:00 am - 3:31 pmLAS-TYS
6h 31m1 stop
$259Frontier
Find Deal
Thu, Dec 18 - Thu, Dec 25
Allegiant Air Logo
1:36 pm - 3:04 pmTYS-LAS
4h 28mnonstop
Allegiant Air Logo
3:54 pm - 10:39 pmLAS-TYS
3h 45mnonstop
$275Allegiant Air
Find Deal
Mon, Mar 23 - Fri, Mar 27
Frontier Logo
4:52 pm - 11:42 pmTYS-LAS
9h 50m1 stop
Frontier Logo
12:59 am - 3:57 pmLAS-TYS
11h 58m1 stop
$302Frontier
Find Deal
Thu, Dec 4 - Sun, Dec 7
Delta Logo
3:57 pm - 9:47 pmTYS-LAS
8h 50m1 stop
Delta Logo
7:14 am - 6:58 pmLAS-TYS
8h 44m1 stop
$308Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
Allegiant Air Logo
1:36 pm - 3:04 pmTYS-LAS
4h 28mnonstop
Allegiant Air Logo
4:40 pm - 11:27 pmLAS-TYS
3h 47mnonstop
$309Allegiant Air
Find Deal
Mon, Mar 30 - Fri, Apr 3
United Airlines Logo
1:59 pm - 6:17 pmTYS-LAS
7h 18m1 stop
United Airlines Logo
11:50 pm - 10:57 amLAS-TYS
8h 07m1 stop
$315United Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 19

Allegiant Air flights from Knoxville to Las Vegas

Our best Allegiant Air deals on Knoxville to Las Vegas flight tickets
Allegiant Air
Mar 23
TYS1:36 pmKnoxville McGhee Tyson
4h 28m
LAS3:04 pmLas Vegas Harry Reid Intl
Mar 27
LAS3:54 pmLas Vegas Harry Reid Intl
3h 45m
TYS10:39 pmKnoxville McGhee Tyson
Allegiant Air
Mar 30
TYS1:36 pmKnoxville McGhee Tyson
4h 28m
LAS3:04 pmLas Vegas Harry Reid Intl
Apr 3
LAS4:40 pmLas Vegas Harry Reid Intl
3h 47m
TYS11:27 pmKnoxville McGhee Tyson
Allegiant Air
Nov 7
TYS7:55 amKnoxville McGhee Tyson
4h 17m
LAS9:12 amLas Vegas Harry Reid Intl
Nov 10
LAS10:07 amLas Vegas Harry Reid Intl
3h 48m
TYS4:55 pmKnoxville McGhee Tyson

Delta flights from Knoxville to Las Vegas

Our best Delta deals on Knoxville to Las Vegas flight tickets
Delta
Dec 2
TYS3:57 pmKnoxville McGhee Tyson
8h 50m
1 stop
LAS9:47 pmLas Vegas Harry Reid Intl
Dec 9
LAS7:14 amLas Vegas Harry Reid Intl
8h 44m
1 stop
TYS6:58 pmKnoxville McGhee Tyson
Delta
Nov 19
TYS3:53 pmKnoxville McGhee Tyson
8h 36m
1 stop
LAS9:29 pmLas Vegas Harry Reid Intl
Nov 22
LAS11:15 pmLas Vegas Harry Reid Intl
7h 22m
1 stop
TYS9:37 amKnoxville McGhee Tyson

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Las Vegas that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Knoxville to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 11/17

12:50 pm-11:06 am

2 stops25h 16m

Las Vegas Harry Reid Intl

Fri 11/21

10:46 am-5:32 pm

Nonstop3h 46m

$253

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Tue 11/18

11:24 am-10:10 pm

1 stop13h 46m

Las Vegas Harry Reid Intl

Sat 11/22

3:06 pm-4:03 pm

1 stop21h 57m

$254

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Tue 12/2

6:33 pm-2:40 pm

2 stops23h 07m

Las Vegas Harry Reid Intl

Mon 12/8

10:19 am-5:02 pm

Nonstop3h 43m

$257

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 11/17

2:22 pm-10:07 am

2 stops22h 45m

Las Vegas Harry Reid Intl

Fri 11/21

10:46 am-5:32 pm

Nonstop3h 46m

$258

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Thu 12/18

4:26 pm-11:42 pm

1 stop10h 16m

Las Vegas Harry Reid Intl

Thu 12/25

6:00 am-3:31 pm

1 stop6h 31m

$259

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 3/23

1:36 pm-3:04 pm

Nonstop4h 28m

Las Vegas Harry Reid Intl

Fri 3/27

3:54 pm-10:39 pm

Nonstop3h 45m

$275

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Thu 12/4

4:52 pm-11:42 pm

1 stop9h 50m

Las Vegas Harry Reid Intl

Sun 12/7

12:59 am-3:57 pm

1 stop11h 58m

$302

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Tue 12/2

3:57 pm-9:47 pm

1 stop8h 50m

Las Vegas Harry Reid Intl

Tue 12/9

7:14 am-6:58 pm

1 stop8h 44m

$308

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 3/30

1:36 pm-3:04 pm

Nonstop4h 28m

Las Vegas Harry Reid Intl

Fri 4/3

4:40 pm-11:27 pm

Nonstop3h 47m

$309

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 1/17

1:59 pm-6:17 pm

1 stop7h 18m

Las Vegas Harry Reid Intl

Mon 1/19

11:50 pm-10:57 am

1 stop8h 07m

$315

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Las Vegas from

How to get the cheapest flight ticket from Knoxville to Las Vegas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Las Vegas?

The month of January is, on average, the cheapest month to fly to Las Vegas from Knoxville, with most prices found around $263. The month of August is another great option to travel to Las Vegas, with average flight prices from Knoxville averaging around $274.

What is the cheapest day to depart on your flight to Las Vegas?

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 $196. Flights from Knoxville to Las Vegas on a Thursday will generally be more expensive and average around $327. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Las Vegas?

The cheapest time of day to fly to Las Vegas is in the afternoon when flights can be purchased for as low as $225. Flights to Las Vegas are more costly in the morning, with an average ticket price of $250. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Knoxville McGhee Tyson to Las Vegas Harry Reid Intl flight route?

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

How far in advance should I book a flight to Las Vegas?

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 $322 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 $250 on momondo.

What cabin class options are available on Knoxville McGhee Tyson to Las Vegas Harry Reid Intl flights?

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

How have Knoxville to Las Vegas flight prices changed over time?

As of November 2025, prices for Knoxville to Las Vegas flights are approximately 14% more expensive when compared to flights at the same time last year.

When to book flights from Knoxville to Las Vegas

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Las Vegas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Knoxville to Las Vegas (TYS to LAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Las Vegas

Best Price Found

$154

Fastest flight time

4h 17m

Direct flights

Tue, Thu and Sat

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Knoxville in the past 72 hours is $154. The best round-trip flight deal from Knoxville to Las Vegas found on momondo in the last 72 hours is $209.
The fastest flight from Knoxville to Las Vegas takes 4h 17m
Direct flights go from Knoxville to Las Vegas on Tuesday, Thursday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
  • How far is Knoxville McGhee Tyson to Las Vegas Harry Reid Intl by plane?

    The distance between Knoxville McGhee Tyson and Las Vegas Harry Reid Intl is about 1734.7 mi. Flights usually cover this in 4h 17m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Knoxville McGhee Tyson Airport to Las Vegas Harry Reid Intl Airport are updated daily.

  • How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Las Vegas Harry Reid Intl Airport?

  • How old do you have to be to fly from Knoxville McGhee Tyson Airport to Las Vegas Harry Reid Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The required travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Las Vegas Harry Reid Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Knoxville to Las Vegas?

  • What is the most popular airline from Knoxville to Las Vegas?

Best airlines flying from Knoxville to Las Vegas

Compare and see reviews for airlines that fly from Knoxville to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $127Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
Allegiant AirPriceFrom $130Free CancellationRating
7.2
697 reviews
Search Allegiant Air flights
DeltaPriceFrom $237Free CancellationRating
7.9
8,001 reviews
Search Delta flights
United AirlinesPriceFrom $250Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
American AirlinesPriceFrom $260Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Laughlin
Mount Charleston
Henderson
Mesquite
Paradise
North Las Vegas
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Sunrise Manor
Winchester
Needles

Why use momondo?

Why should I use momondo to find a flight deal from Knoxville to Las Vegas?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Las Vegas from Knoxville.

Can I find flights from Knoxville to Las Vegas with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Las Vegas from Knoxville with this policy.

How can momondo help me find flights from Knoxville to Las Vegas?

Once all potential Knoxville to Las Vegas flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Knoxville to Las Vegas right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Knoxville to Las Vegas now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Las Vegas and let you know when they change.

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Sat 12/6
Sat 12/13

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