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Cheap flights from Knoxville to Las Vegas from $97

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 10/15. 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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Find the cheapest flights from Knoxville to Las Vegas

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
1:17 pm - 2:31 pm
TYS
-
LAS
4h 14mnonstop
Allegiant Air Logo
11:19 am - 6:13 pm
LAS
-
TYS
3h 54mnonstop
$161Allegiant Air
Mon, Sep 7 - Fri, Sep 11
Allegiant Air Logo
2:47 pm - 4:06 pm
TYS
-
LAS
4h 19mnonstop
Allegiant Air Logo
2:48 pm - 9:46 pm
LAS
-
TYS
3h 58mnonstop
$213Allegiant Air
Fri, Aug 14 - Fri, Aug 21
Allegiant Air Logo
2:47 pm - 4:06 pm
TYS
-
LAS
4h 19mnonstop
Allegiant Air Logo
7:00 am - 1:57 pm
LAS
-
TYS
3h 57mnonstop
$218Allegiant Air
Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
6:30 am - 7:44 am
TYS
-
LAS
4h 14mnonstop
Allegiant Air Logo
10:24 am - 5:18 pm
LAS
-
TYS
3h 54mnonstop
$221Allegiant Air
Mon, Sep 14 - Thu, Sep 17
Multiple Airlines Logo
8:32 pm - 8:27 pm
TYS
-
LAS
26h 55m
1 stop
Multiple Airlines Logo
7:00 am - 1:57 pm
LAS
-
TYS
3h 57mnonstop
$226Multiple Airlines
Fri, Jul 31 - Fri, Aug 7
Allegiant Air Logo
2:47 pm - 4:06 pm
TYS
-
LAS
4h 19mnonstop
Allegiant Air Logo
7:00 am - 1:57 pm
LAS
-
TYS
3h 57mnonstop
$229Allegiant Air
Fri, Aug 7 - Mon, Aug 10
Multiple Airlines Logo
2:47 pm - 4:06 pm
TYS
-
LAS
4h 19mnonstop
Multiple Airlines Logo
9:24 pm - 7:36 pm
LAS
-
TYS
19h 12m
1 stop
$231Multiple Airlines
Mon, Aug 10 - Sun, Aug 16
Frontier Logo
8:32 pm - 5:29 pm
TYS
-
LAS
23h 57m
1 stop
Frontier Logo
12:59 am - 7:37 pm
LAS
-
TYS
15h 38m
1 stop
$234Frontier
Mon, Jun 8 - Tue, Jun 9
Multiple Airlines Logo
2:01 pm - 3:19 pm
TYS
-
LAS
4h 18mnonstop
Multiple Airlines Logo
6:00 am - 3:29 pm
LAS
-
TYS
6h 29m
1 stop
$236Multiple Airlines
Thu, Oct 15 - Sun, Oct 18
Allegiant Air Logo
12:49 pm - 2:07 pm
TYS
-
LAS
4h 18mnonstop
Allegiant Air Logo
1:45 pm - 8:39 pm
LAS
-
TYS
3h 54mnonstop
$237Allegiant Air
Fri, Oct 30 - Sun, Nov 1

Allegiant Air flights from Knoxville to Las Vegas

Our best Allegiant Air deals on Knoxville to Las Vegas flight tickets
Allegiant Air
Sep 7
TYS1:17 pmKnoxville McGhee Tyson
4h 14m
LAS2:31 pmLas Vegas Harry Reid Intl
Sep 11
LAS11:19 amLas Vegas Harry Reid Intl
3h 54m
TYS6:13 pmKnoxville McGhee Tyson
$161
Allegiant Air
Aug 14
TYS2:47 pmKnoxville McGhee Tyson
4h 19m
LAS4:06 pmLas Vegas Harry Reid Intl
Aug 21
LAS2:48 pmLas Vegas Harry Reid Intl
3h 58m
TYS9:46 pmKnoxville McGhee Tyson
$213
Allegiant Air
Aug 14
TYS2:47 pmKnoxville McGhee Tyson
4h 19m
LAS4:06 pmLas Vegas Harry Reid Intl
Aug 17
LAS7:00 amLas Vegas Harry Reid Intl
3h 57m
TYS1:57 pmKnoxville McGhee Tyson
$218

Frontier flights from Knoxville to Las Vegas

Our best Frontier deals on Knoxville to Las Vegas flight tickets
Frontier
May 29
TYS8:19 pmKnoxville McGhee Tyson
18h 16m
1 stop
LAS11:35 amLas Vegas Harry Reid Intl
Jun 9
LAS9:24 pmLas Vegas Harry Reid Intl
19h 13m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
$217
Frontier
Jun 8
TYS8:32 pmKnoxville McGhee Tyson
23h 57m
1 stop
LAS5:29 pmLas Vegas Harry Reid Intl
Jun 9
LAS12:59 amLas Vegas Harry Reid Intl
15h 38m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
$234
Frontier
May 29
TYS8:19 pmKnoxville McGhee Tyson
6h 10m
1 stop
LAS11:29 pmLas Vegas Harry Reid Intl
Jun 10
LAS6:15 amLas Vegas Harry Reid Intl
10h 22m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
$240

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 May 15, 2026.
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

Cheapest round-trip
Quickest round-trip

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 9/7

1:17 pm-2:31 pm

Nonstop4h 14m

Las Vegas Harry Reid Intl

Fri 9/11

11:19 am-6:13 pm

Nonstop3h 54m

$161

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 8/14

2:47 pm-4:06 pm

Nonstop4h 19m

Las Vegas Harry Reid Intl

Fri 8/21

2:48 pm-9:46 pm

Nonstop3h 58m

$213

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 8/14

2:47 pm-4:06 pm

Nonstop4h 19m

Las Vegas Harry Reid Intl

Mon 8/17

7:00 am-1:57 pm

Nonstop3h 57m

$218

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 9/14

6:30 am-7:44 am

Nonstop4h 14m

Las Vegas Harry Reid Intl

Thu 9/17

10:24 am-5:18 pm

Nonstop3h 54m

$221

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 7/31

8:32 pm-8:27 pm

1 stop26h 55m

Las Vegas Harry Reid Intl

Fri 8/7

7:00 am-1:57 pm

Nonstop3h 57m

$226

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 8/7

2:47 pm-4:06 pm

Nonstop4h 19m

Las Vegas Harry Reid Intl

Mon 8/10

7:00 am-1:57 pm

Nonstop3h 57m

$229

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 8/10

2:47 pm-4:06 pm

Nonstop4h 19m

Las Vegas Harry Reid Intl

Sun 8/16

9:24 pm-7:36 pm

1 stop19h 12m

$231

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 6/8

8:32 pm-5:29 pm

1 stop23h 57m

Las Vegas Harry Reid Intl

Tue 6/9

12:59 am-7:37 pm

1 stop15h 38m

$234

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Thu 10/15

2:01 pm-3:19 pm

Nonstop4h 18m

Las Vegas Harry Reid Intl

Sun 10/18

6:00 am-3:29 pm

1 stop6h 29m

$236

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 10/30

12:49 pm-2:07 pm

Nonstop4h 18m

Las Vegas Harry Reid Intl

Sun 11/1

1:45 pm-8:39 pm

Nonstop3h 54m

$237

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 January is, on average, the cheapest month to fly to Las Vegas from Knoxville, with most prices found around $250. The month of August is another great option to travel to Las Vegas, with average flight prices from Knoxville averaging around $269.

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

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $203. Flights from Knoxville to Las Vegas on a Saturday will generally be more expensive and average around $344. 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 $231. Flights to Las Vegas are more costly at noon, with an average ticket price of $277. Departure times at noon 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 from Knoxville 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 $348 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 $220 on momondo.

Can stopping save me money on Knoxville to Las Vegas flights?

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

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

As of May 2026, prices for Knoxville to Las Vegas flights are approximately 32% 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

$124

Fastest flight time

4h 07m

Direct flights

Tue, 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 $124. The best round-trip flight deal from Knoxville to Las Vegas found on momondo in the last 72 hours is $220.
The fastest flight from Knoxville to Las Vegas takes 4h 07m
Direct flights go from Knoxville to Las Vegas on Tuesday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Las Vegas. From Knoxville there are direct flights to Las Vegas Harry Reid Intl (LAS).
Search flight deals

Frequently asked questions about flying from Knoxville to Las Vegas

  • 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 07m, 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 $112Free CancellationRating
5.6
2,951 reviews
Search Frontier flights
Allegiant AirPriceFrom $123Free CancellationRating
7.3
709 reviews
Search Allegiant Air flights
DeltaPriceFrom $163Free CancellationRating
7.9
8,453 reviews
Search Delta flights
United AirlinesPriceFrom $250Free CancellationRating
7.4
9,723 reviews
Search United Airlines flights
American AirlinesPriceFrom $251Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights

  • Allegiant Air Flights From Knoxville to Las Vegas

    Across 1 Allegiant Air flight from Knoxville to Las Vegas this week, the average price was $262, with the best Allegiant Air deals starting from $123 round-trip. 709 users have rated Allegiant Air on momondo, with an average score of 7.3/10.

Traveling to a place near Las Vegas?

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