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Cheap flights from Knoxville to Las Vegas from $103

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 10/26. 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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Cheap round-trip flights

Frontier Logo
8:17 pm - 11:29 pmTYS-LAS
6h 12m1 stop
Frontier Logo
9:08 am - 7:32 pmLAS-TYS
7h 24m1 stop
$194Frontier
Find Deal
Fri, Oct 17 - Fri, Oct 24
Allegiant Air Logo
7:35 am - 9:10 amTYS-LAS
4h 35mnonstop
Allegiant Air Logo
10:00 am - 4:50 pmLAS-TYS
3h 50mnonstop
$202Allegiant Air
Find Deal
Mon, Jan 12 - Fri, Jan 16
Frontier Logo
7:17 pm - 7:38 pmTYS-LAS
27h 21m1 stop
Frontier Logo
12:59 am - 6:22 pmLAS-TYS
14h 23m1 stop
$219Frontier
Find Deal
Thu, Nov 13 - Sat, Nov 15
Multiple Airlines Logo
6:30 am - 6:46 pmTYS-LAS
15h 16m1 stop
Multiple Airlines Logo
10:19 am - 5:02 pmLAS-TYS
3h 43mnonstop
$221Multiple Airlines
Find Deal
Sun, Dec 7 - Fri, Dec 12
Multiple Airlines Logo
6:30 am - 7:45 amTYS-LAS
4h 15mnonstop
Multiple Airlines Logo
12:59 am - 1:33 pmLAS-TYS
9h 34m1 stop
$228Multiple Airlines
Find Deal
Sun, Oct 19 - Sat, Oct 25
Multiple Airlines Logo
7:00 am - 12:12 pmTYS-LAS
8h 12m1 stop
Multiple Airlines Logo
12:59 am - 6:22 pmLAS-TYS
14h 23m1 stop
$232Multiple Airlines
Find Deal
Sun, Oct 26 - Wed, Nov 5
Multiple Airlines Logo
6:30 am - 7:45 amTYS-LAS
4h 15mnonstop
Multiple Airlines Logo
7:00 am - 10:42 pmLAS-TYS
12h 42m1 stop
$234Multiple Airlines
Find Deal
Sun, Oct 19 - Sun, Oct 26
Delta Logo
5:16 pm - 10:29 pmTYS-LAS
8h 13m1 stop
Delta Logo
7:15 am - 4:31 pmLAS-TYS
6h 16m1 stop
$251Delta
Find Deal
Sat, Nov 1 - Wed, Nov 5
United Airlines Logo
4:58 pm - 8:46 pmTYS-LAS
6h 48m1 stop
United Airlines Logo
9:46 am - 8:33 pmLAS-TYS
7h 47m2 stops
$256United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
Delta Logo
4:48 pm - 10:29 pmTYS-LAS
8h 41m1 stop
Delta Logo
7:15 am - 4:31 pmLAS-TYS
6h 16m1 stop
$264Delta
Find Deal
Fri, Oct 31 - Wed, Nov 5

Frontier flights from Knoxville to Las Vegas

Our best Frontier deals on Knoxville to Las Vegas flight tickets
Frontier
Oct 17
TYS8:17 pmKnoxville McGhee Tyson
6h 12m
1 stop
LAS11:29 pmLas Vegas Harry Reid Intl
Oct 24
LAS9:08 amLas Vegas Harry Reid Intl
7h 24m
1 stop
TYS7:32 pmKnoxville McGhee Tyson
$194
Find similar
Frontier
Nov 13
TYS7:17 pmKnoxville McGhee Tyson
27h 21m
1 stop
LAS7:38 pmLas Vegas Harry Reid Intl
Nov 15
LAS12:59 amLas Vegas Harry Reid Intl
14h 23m
1 stop
TYS6:22 pmKnoxville McGhee Tyson
$219
Find similar
Frontier
Oct 27
TYS8:17 pmKnoxville McGhee Tyson
6h 12m
1 stop
LAS11:29 pmLas Vegas Harry Reid Intl
Oct 30
LAS9:12 amLas Vegas Harry Reid Intl
6h 10m
1 stop
TYS6:22 pmKnoxville McGhee Tyson
$243
Find similar

Allegiant Air flights from Knoxville to Las Vegas

Our best Allegiant Air deals on Knoxville to Las Vegas flight tickets
Allegiant Air
Jan 12
TYS7:35 amKnoxville McGhee Tyson
4h 35m
LAS9:10 amLas Vegas Harry Reid Intl
Jan 16
LAS10:00 amLas Vegas Harry Reid Intl
3h 50m
TYS4:50 pmKnoxville McGhee Tyson
$202
Find similar
Allegiant Air
Dec 22
TYS8:00 amKnoxville McGhee Tyson
4h 29m
LAS9:29 amLas Vegas Harry Reid Intl
Dec 26
LAS10:19 amLas Vegas Harry Reid Intl
3h 43m
TYS5:02 pmKnoxville McGhee Tyson
$236
Find similar
Allegiant Air
Sep 25
TYS4:50 pmKnoxville McGhee Tyson
4h 13m
LAS6:03 pmLas Vegas Harry Reid Intl
Sep 28
LAS9:05 amLas Vegas Harry Reid Intl
3h 55m
TYS4:00 pmKnoxville McGhee Tyson
$295
Find similar

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 September 22, 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

Fri 10/17

8:17 pm-11:29 pm

1 stop6h 12m

Las Vegas Harry Reid Intl

Fri 10/24

9:08 am-7:32 pm

1 stop7h 24m

$194

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 1/12

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Fri 1/16

10:00 am-4:50 pm

Nonstop3h 50m

$202

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Thu 11/13

7:17 pm-7:38 pm

1 stop27h 21m

Las Vegas Harry Reid Intl

Sat 11/15

12:59 am-6:22 pm

1 stop14h 23m

$219

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sun 12/7

6:30 am-6:46 pm

1 stop15h 16m

Las Vegas Harry Reid Intl

Fri 12/12

10:19 am-5:02 pm

Nonstop3h 43m

$221

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sun 10/19

6:30 am-7:45 am

Nonstop4h 15m

Las Vegas Harry Reid Intl

Sat 10/25

12:59 am-1:33 pm

1 stop9h 34m

$228

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sun 10/26

7:00 am-12:12 pm

1 stop8h 12m

Las Vegas Harry Reid Intl

Wed 11/5

12:59 am-6:22 pm

1 stop14h 23m

$232

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sun 10/19

6:30 am-7:45 am

Nonstop4h 15m

Las Vegas Harry Reid Intl

Sun 10/26

7:00 am-10:42 pm

1 stop12h 42m

$234

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 11/1

5:16 pm-10:29 pm

1 stop8h 13m

Las Vegas Harry Reid Intl

Wed 11/5

7:15 am-4:31 pm

1 stop6h 16m

$251

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Tue 11/11

4:58 pm-8:46 pm

1 stop6h 48m

Las Vegas Harry Reid Intl

Tue 11/18

9:46 am-8:33 pm

2 stops7h 47m

$256

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 10/31

4:48 pm-10:29 pm

1 stop8h 41m

Las Vegas Harry Reid Intl

Wed 11/5

7:15 am-4:31 pm

1 stop6h 16m

$264

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 typical price of a round-trip flight between Knoxville and Las Vegas?

What is the cheapest month to fly to Las Vegas?

The month of August is, on average, the cheapest month to fly to Las Vegas from Knoxville, with most prices found around $274. The month of January is another great option to travel to Las Vegas, with average flight prices from Knoxville averaging around $288.

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 $342. 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 evening when flights can be purchased for as low as $158. Flights to Las Vegas are more costly in the morning, with an average ticket price of $261. 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 $324 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 $293 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 September 2025, prices for Knoxville to Las Vegas flights are approximately 22% cheaper 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

$92

Fastest flight time

4h 13m

Direct flights

Mon, Tue, Thu, Fri and Sat

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Knoxville in the past 72 hours is $92. The best round-trip flight deal from Knoxville to Las Vegas found on momondo in the last 72 hours is $227.
The fastest flight from Knoxville to Las Vegas takes 4h 13m
Direct flights go from Knoxville to Las Vegas on Monday, Tuesday, Thursday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

  • 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 15m, 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 $118Free CancellationRating
5.8
3,166 reviews
Search Frontier flights
Allegiant AirPriceFrom $130Free CancellationRating
7.2
699 reviews
Search Allegiant Air flights
DeltaPriceFrom $238Free CancellationRating
7.9
7,971 reviews
Search Delta flights
United AirlinesPriceFrom $250Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
American AirlinesPriceFrom $267Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Allegiant Air Flights From Knoxville to Las Vegas

    Across 2 Allegiant Air flights from Knoxville to Las Vegas this week, the average price was $255, with the best Allegiant Air deals starting from $130 round-trip. 699 users have rated Allegiant Air on momondo, with an average score of 7.2/10.

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
North Las Vegas
Paradise
Kingman
Pahrump
Primm
Furnace Creek
Boulder City
Winchester
Sunrise Manor
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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