Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Knoxville to Las Vegas from $75

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 2/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
7:35 am - 9:10 am
TYS
-
LAS
4h 35mnonstop
Allegiant Air Logo
4:11 pm - 10:54 pm
LAS
-
TYS
3h 43mnonstop
$182Allegiant Air
Mon, Jan 26 - Mon, Mar 2
Multiple Airlines Logo
8:30 am - 10:45 pm
TYS
-
LAS
17h 15m1 stop
Multiple Airlines Logo
12:18 pm - 7:03 pm
LAS
-
TYS
3h 45mnonstop
$208Multiple Airlines
Sun, Mar 1 - Wed, Mar 4
Frontier Logo
4:30 pm - 11:39 pm
TYS
-
LAS
10h 09m1 stop
Frontier Logo
6:00 am - 3:30 pm
LAS
-
TYS
6h 30m1 stop
$210Frontier
Mon, Feb 2 - Fri, Feb 6
Multiple Airlines Logo
7:35 am - 9:10 am
TYS
-
LAS
4h 35mnonstop
Multiple Airlines Logo
11:13 am - 8:39 am
LAS
-
TYS
18h 26m2 stops
$212Multiple Airlines
Mon, Feb 2 - Wed, Feb 4
Allegiant Air Logo
1:40 pm - 3:28 pm
TYS
-
LAS
4h 48mnonstop
Allegiant Air Logo
4:18 pm - 11:01 pm
LAS
-
TYS
3h 43mnonstop
$217Allegiant Air
Fri, Feb 13 - Mon, Feb 16
Allegiant Air Logo
7:35 am - 9:10 am
TYS
-
LAS
4h 35mnonstop
Allegiant Air Logo
10:00 am - 4:50 pm
LAS
-
TYS
3h 50mnonstop
$218Allegiant Air
Fri, Jan 9 - Mon, Jan 12
Frontier Logo
4:30 pm - 11:39 pm
TYS
-
LAS
10h 09m1 stop
Frontier Logo
6:00 am - 3:35 pm
LAS
-
TYS
6h 35m1 stop
$220Frontier
Mon, Jan 26 - Mon, Feb 2
Multiple Airlines Logo
4:30 pm - 2:46 pm
TYS
-
LAS
25h 16m1 stop
Multiple Airlines Logo
4:18 pm - 11:01 pm
LAS
-
TYS
3h 43mnonstop
$222Multiple Airlines
Mon, Feb 2 - Fri, Feb 20
Multiple Airlines Logo
3:50 pm - 11:44 pm
TYS
-
LAS
10h 54m1 stop
Multiple Airlines Logo
12:18 pm - 7:03 pm
LAS
-
TYS
3h 45mnonstop
$225Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Allegiant Air Logo
7:35 am - 9:10 am
TYS
-
LAS
4h 35mnonstop
Allegiant Air Logo
10:00 am - 4:50 pm
LAS
-
TYS
3h 50mnonstop
$228Allegiant Air
Mon, Jan 26 - Mon, Feb 2

Frontier flights from Knoxville to Las Vegas

Our best Frontier deals on Knoxville to Las Vegas flight tickets
Frontier
Feb 2
TYS4:30 pmKnoxville McGhee Tyson
10h 09m
1 stop
LAS11:39 pmLas Vegas Harry Reid Intl
Feb 6
LAS6:00 amLas Vegas Harry Reid Intl
6h 30m
1 stop
TYS3:30 pmKnoxville McGhee Tyson
$210
Find similar
Frontier
Jan 26
TYS4:30 pmKnoxville McGhee Tyson
10h 09m
1 stop
LAS11:39 pmLas Vegas Harry Reid Intl
Feb 2
LAS6:00 amLas Vegas Harry Reid Intl
6h 35m
1 stop
TYS3:35 pmKnoxville McGhee Tyson
$220
Find similar
Frontier
Feb 16
TYS8:13 pmKnoxville McGhee Tyson
6h 31m
1 stop
LAS11:44 pmLas Vegas Harry Reid Intl
Feb 20
LAS8:14 amLas Vegas Harry Reid Intl
8h 13m
1 stop
TYS7:27 pmKnoxville McGhee Tyson
$260
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 26
TYS7:35 amKnoxville McGhee Tyson
4h 35m
LAS9:10 amLas Vegas Harry Reid Intl
Mar 2
LAS4:11 pmLas Vegas Harry Reid Intl
3h 43m
TYS10:54 pmKnoxville McGhee Tyson
$182
Find similar
Allegiant Air
Feb 13
TYS1:40 pmKnoxville McGhee Tyson
4h 48m
LAS3:28 pmLas Vegas Harry Reid Intl
Feb 16
LAS4:18 pmLas Vegas Harry Reid Intl
3h 43m
TYS11:01 pmKnoxville McGhee Tyson
$217
Find similar
Allegiant Air
Jan 9
TYS7:35 amKnoxville McGhee Tyson
4h 35m
LAS9:10 amLas Vegas Harry Reid Intl
Jan 12
LAS10:00 amLas Vegas Harry Reid Intl
3h 50m
TYS4:50 pmKnoxville McGhee Tyson
$218
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 December 30, 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 1/26

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Mon 3/2

4:11 pm-10:54 pm

Nonstop3h 43m

$182

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sun 3/1

8:30 am-10:45 pm

1 stop17h 15m

Las Vegas Harry Reid Intl

Wed 3/4

12:18 pm-7:03 pm

Nonstop3h 45m

$208

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 2/2

4:30 pm-11:39 pm

1 stop10h 09m

Las Vegas Harry Reid Intl

Fri 2/6

6:00 am-3:30 pm

1 stop6h 30m

$210

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 2/2

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Wed 2/4

11:13 am-8:39 am

2 stops18h 26m

$212

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 2/13

1:40 pm-3:28 pm

Nonstop4h 48m

Las Vegas Harry Reid Intl

Mon 2/16

4:18 pm-11:01 pm

Nonstop3h 43m

$217

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/9

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Mon 1/12

10:00 am-4:50 pm

Nonstop3h 50m

$218

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 1/26

4:30 pm-11:39 pm

1 stop10h 09m

Las Vegas Harry Reid Intl

Mon 2/2

6:00 am-3:35 pm

1 stop6h 35m

$220

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 2/2

4:30 pm-2:46 pm

1 stop25h 16m

Las Vegas Harry Reid Intl

Fri 2/20

4:18 pm-11:01 pm

Nonstop3h 43m

$222

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 2/25

3:50 pm-11:44 pm

1 stop10h 54m

Las Vegas Harry Reid Intl

Wed 3/4

12:18 pm-7:03 pm

Nonstop3h 45m

$225

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 1/26

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Mon 2/2

10:00 am-4:50 pm

Nonstop3h 50m

$228

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $262. 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 $220. Flights to Las Vegas are more costly in the morning, with an average ticket price of $255. 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 $326 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 $244 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.

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 December 2025, prices for Knoxville to Las Vegas flights are approximately 108% 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

$166

Fastest flight time

4h 08m

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 $166. The best round-trip flight deal from Knoxville to Las Vegas found on momondo in the last 72 hours is $196.
The fastest flight from Knoxville to Las Vegas takes 4h 08m
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 in Las Vegas. From Knoxville there are direct flights to 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 08m, 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
5.7
3,066 reviews
Search Frontier flights
Allegiant AirPriceFrom $130Free CancellationRating
7.2
701 reviews
Search Allegiant Air flights
DeltaPriceFrom $226Free CancellationRating
7.9
8,016 reviews
Search Delta flights
United AirlinesPriceFrom $250Free CancellationRating
7.4
9,123 reviews
Search United Airlines flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,074 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 $255, with the best Allegiant Air deals starting from $130 round-trip. 701 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
Paradise
Mesquite
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.

An easier way to manage your Las Vegas trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 1/29
Thu 2/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States