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$88+ Cheap flights from Knoxville to Las Vegas (TYS - LAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LAS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Find cheap flights from Knoxville to Las Vegas with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl are usually found in January or August, booked 69 days in advance, depart on a Wednesday or Monday and return on a Tuesday

Cheap flight deals from Knoxville to Las Vegas

Cheapest flights from Knoxville to Las Vegas
Explore the most affordable flight options available from Knoxville to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Expedia deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:26 pmTYS - LAS
1 stop18h 39mFrontier
Wed 12/2412:59 amLAS - TYS
1 stop11h 32mFrontier
Deal found 12/9$232
This Frontier deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:46 pmTYS - LAS
1 stop9h 56mFrontier
Thu 12/256:00 amLAS - TYS
1 stop6h 31mFrontier
Deal found 12/9$258
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:10 pmTYS - LAS
1 stop10h 30mMultiple Airlines
Fri 1/910:00 amLAS - TYS
Nonstop3h 50mMultiple Airlines
Deal found 12/10$263
This Frontier deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:46 pmTYS - LAS
1 stop9h 56mFrontier
Thu 12/256:00 amLAS - TYS
1 stop6h 31mFrontier
Deal found 12/9$278
This Mytrip deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:00 amTYS - LAS
Nonstop4h 29mAllegiant Air
Fri 12/1910:19 amLAS - TYS
Nonstop3h 43mAllegiant Air
Deal found 12/11$288
This Gotogate deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:00 amTYS - LAS
Nonstop4h 29mAllegiant Air
Fri 1/910:00 amLAS - TYS
Nonstop3h 50mAllegiant Air
Deal found 12/10$305
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:00 amTYS - LAS
Nonstop4h 29mMultiple Airlines
Tue 12/161:16 amLAS - TYS
2 stops35h 15mMultiple Airlines
Deal found 12/10$309
This Frontier deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:46 pmTYS - LAS
1 stop9h 56mFrontier
Mon 12/2912:59 amLAS - TYS
1 stop11h 52mFrontier
Deal found 12/10$312
This Booking.com deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:00 amTYS - LAS
Nonstop4h 29mAllegiant Air
Fri 12/1910:19 amLAS - TYS
Nonstop3h 43mAllegiant Air
Deal found 12/11$328

Find flight deals from Knoxville to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Las Vegas (LAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$232
(Expedia)

One-way from

$88
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$440

Good round-trip deal

$206 or less

Good one-way deal

$92 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Las Vegas Harry Reid Intl flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Las Vegas Harry Reid Intl flights.
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From Knoxville McGhee Tyson to Las Vegas Harry Reid Intl
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One-way flight from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl.
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Price to beat on a one-way flight from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl.
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Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from Knoxville to Las Vegas that are best for you.

Fly from

Knoxville

Fly to

Las Vegas

Route

Depart

Return

Price

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 1/10

9:30 am-2:59 pm

1 stop8h 29m

Las Vegas Harry Reid Intl

Sat 1/17

11:50 pm-10:57 am

1 stop8h 07m

$244

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/9

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Fri 1/16

10:00 am-4:50 pm

Nonstop3h 50m

$246

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 2/4

11:10 am-5:53 pm

2 stops9h 43m

Las Vegas Harry Reid Intl

Fri 2/6

12:30 am-10:32 am

1 stop7h 02m

$256

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/9

7:35 am-9:10 am

Nonstop4h 35m

Las Vegas Harry Reid Intl

Fri 1/16

11:51 am-11:09 am

3 stops20h 18m

$275

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 1/7

4:25 pm-9:59 pm

1 stop8h 34m

Las Vegas Harry Reid Intl

Wed 1/14

11:01 am-8:52 pm

1 stop6h 51m

$303

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 2/18

7:30 am-2:08 pm

1 stop9h 38m

Las Vegas Harry Reid Intl

Sat 2/21

10:45 am-11:12 pm

1 stop9h 27m

$305

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/23

4:55 pm-9:59 pm

1 stop8h 04m

Las Vegas Harry Reid Intl

Tue 1/27

11:01 am-8:52 pm

1 stop6h 51m

$310

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/30

6:41 pm-11:15 pm

1 stop7h 34m

Las Vegas Harry Reid Intl

Sat 1/31

10:15 pm-9:24 am

1 stop8h 09m

$315

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 1/23

4:00 pm-8:05 pm

1 stop7h 05m

Las Vegas Harry Reid Intl

Tue 1/27

12:47 pm-10:47 pm

2 stops7h 00m

$320

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Mon 1/12

7:35 am-9:10 am

Nonstop4h 35m

$88

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 19 results
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Compare providers for flights from Knoxville to Las Vegas

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Las Vegas in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Las Vegas flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Las Vegas flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Knoxville-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Las Vegas flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Las Vegas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Knoxville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Knoxville to Las Vegas

How far ahead should I book a flight from Knoxville to Las Vegas?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Las Vegas. Price data was last updated on December 5, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to Las Vegas, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Knoxville to Las Vegas?

Currently, August is the cheapest month in which you can book a flight from Knoxville to Las Vegas (average of $79). Flying from Knoxville to Las Vegas in April is currently the most expensive (average of $128). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TYS to LAS?

Find hourly flight availability from Knoxville to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from Knoxville to Las Vegas in the evening. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Knoxville to Las Vegas?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Las Vegas. Price data was last updated on December 6, 2025.

Travelers seeking maximum savings on their Knoxville to Las Vegas flight should consider departing on Friday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Las Vegas. Reviews last updated December 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Knoxville to Las Vegas. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,048 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Allegiant Air
7.2
Good
699 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,008 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Las Vegas. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Knoxville to Las Vegas flight route?

    Within the past month, 4 users have taken a look at flights from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl.

  • How long is the flight from Knoxville to Las Vegas?

    Departing from Knoxville to Las Vegas will take you 4h 35m. Knoxville and Las Vegas are separated by a distance of 1734 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Knoxville to Las Vegas round-trip?

    According to our current data, Frontier ($72), Delta ($125), and Allegiant Air ($130) offers the cheapest pricing from Knoxville to Las Vegas. These flights start at 77% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Knoxville to Las Vegas one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $54. Allegiant Air flights start at $75 while deals on American Airlines start at $125 one-way.

  • What are the cheapest flights from Knoxville to Las Vegas?

    Looking at all options, your cheapest flight can be booked for $85. While the most popular route (Knoxville McGhee Tyson - Las Vegas Harry Reid Intl) can be booked for $191 on average, our data indicates $200 when flying from Knoxville to Las Vegas.

  • Where are the most common layover locations when flying from Knoxville to Las Vegas?

    Of the flights from Knoxville to Las Vegas that have layovers, most of them stop in Dallas.

  • What are some popular things to do or see while on a layover in Dallas?

    The majority of Dallas visitors spend their time at American Airlines Center, Dallas World Aquarium, and Dos Equis Pavilion. American Airlines Center, Dallas World Aquarium and Dos Equis Pavilion are located about 15.0 mi, 15.5 mi, and 18.3 mi, respectively from Dallas/Fort Worth if you are interested in checking them out. Travelers in need of a car in Dallas can rent one for about $50 per day.

  • Where are the least popular layover locations for Knoxville to Las Vegas flights?

    Knoxville to Las Vegas flights that have layovers will least frequently stop in Atlanta.

  • Can I find deals for flights from Knoxville to Las Vegas that include hotel bookings?

    Yes. In addition to deals on Knoxville to Las Vegas flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Las Vegas?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Las Vegas.

  • Can I find deals for business class flights from Knoxville to Las Vegas?

    Yes. Cheapflights offers flight deals from Knoxville to Las Vegas by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Las Vegas?

    Currently, August is the cheapest month in which you can book a flight from Knoxville to Las Vegas (average of $79). Flying from Knoxville to Las Vegas in April is currently the most expensive (average of $128). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
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Top 5 airlines flying from Knoxville to Las Vegas

Discover the top 5 airlines that operate flights from Knoxville to Las Vegas. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$291FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$130Average$255FlexibilityNo cancel feeOn-time88%
DeltaCheapest$236Average$348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$250Average$400FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$396FlexibilityNo cancel feeOn-time71%

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