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$78+ 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — LAS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Las Vegas Harry Reid Intl are usually found in August or January, booked 27 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap 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 September 11, 2025.

Round-trip from

$197
(Kiwi.com)

One-way from

$78
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$288

Good round-trip deal

$192 or less

Good one-way deal

$97 or less
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
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 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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Find 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 September 11, 2025.

This Booking.com deal was found by Cheapflights users on 9/11. 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.
Thu 11/137:17 pmTYS - LAS
1 stop27h 21mFrontier
Sat 11/1512:59 amLAS - TYS
1 stop14h 23mFrontier
Deal found 9/11$201
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:43 pmTYS - LAS
Nonstop4h 15mAllegiant Air
Fri 10/316:30 amLAS - TYS
Nonstop3h 53mAllegiant Air
Deal found 9/9$207
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares 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 9/10$209
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/196:30 amTYS - LAS
Nonstop4h 15mAllegiant Air
Fri 10/246:30 amLAS - TYS
Nonstop3h 53mAllegiant Air
Deal found 9/9$212
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/84:50 pmTYS - LAS
1 stop6h 56mUnited Airlines
Tue 11/1112:40 pmLAS - TYS
1 stop7h 15mUnited Airlines
Deal found 9/10$215
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1310:12 pmTYS - LAS
Nonstop4h 15mMultiple Airlines
Thu 10/168:38 amLAS - TYS
1 stop9h 29mMultiple Airlines
Deal found 9/9$220
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sun 10/196:30 amTYS - LAS
Nonstop4h 15mMultiple Airlines
Thu 10/238:38 amLAS - TYS
1 stop9h 29mMultiple Airlines
Deal found 9/10$225
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2111:00 amTYS - LAS
Nonstop4h 13mAllegiant Air
Thu 9/259:05 amLAS - TYS
Nonstop3h 55mAllegiant Air
Deal found 9/10$227
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:43 pmTYS - LAS
Nonstop4h 15mMultiple Airlines
Wed 11/59:33 amLAS - TYS
1 stop28h 16mMultiple Airlines
Deal found 9/9$231
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:25 amTYS - LAS
1 stop8h 45mDelta
Mon 12/812:43 amLAS - TYS
1 stop5h 53mDelta
Deal found 9/9$237
This Booking.com deal was found by Cheapflights users on 9/11. 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.
Thu 11/67:17 pmTYS - LAS
2 stops30h 33mFrontier
Sat 11/82:03 pmLAS - TYS
2 stops25h 19mFrontier
Deal found 9/11$239
This Priceline deal was found by Cheapflights users on 9/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:17 pmTYS - LAS
1 stop6h 12mFrontier
Fri 10/249:08 amLAS - TYS
1 stop7h 24mFrontier
Deal found 9/10$240

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 September 11, 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

Thu 12/4

3:56 pm-9:29 pm

1 stop8h 33m

Las Vegas Harry Reid Intl

Mon 12/8

12:43 am-9:36 am

1 stop5h 53m

$291

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Thu 12/4

3:56 pm-10:33 pm

1 stop9h 37m

Las Vegas Harry Reid Intl

Sat 12/6

9:53 am-8:00 pm

1 stop7h 07m

$291

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 10/17

8:10 pm-11:30 pm

1 stop6h 20m

Las Vegas Harry Reid Intl

Tue 10/21

10:10 pm-9:00 am

1 stop7h 50m

$308

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 10/11

8:50 am-2:56 pm

1 stop9h 06m

Las Vegas Harry Reid Intl

Sat 10/18

7:45 am-10:50 pm

2 stops12h 05m

$310

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Fri 11/14

3:51 pm-9:28 pm

1 stop8h 37m

Las Vegas Harry Reid Intl

Mon 11/17

12:43 am-9:37 am

1 stop5h 54m

$315

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 11/15

3:51 pm-8:19 pm

1 stop7h 28m

Las Vegas Harry Reid Intl

Tue 11/18

12:43 am-9:37 am

1 stop5h 54m

$315

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 11/19

5:45 am-12:33 pm

2 stops9h 48m

Las Vegas Harry Reid Intl

Sat 11/22

11:50 pm-10:48 am

1 stop7h 58m

$328

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Sat 11/22

3:51 pm-9:28 pm

1 stop8h 37m

Las Vegas Harry Reid Intl

Tue 11/25

12:43 am-9:37 am

1 stop5h 54m

$344

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Tue 10/7

12:00 pm-3:38 pm

1 stop6h 38m

Las Vegas Harry Reid Intl

Fri 10/10

11:59 pm-10:10 am

1 stop7h 11m

$348

KnoxvilleLas Vegas

TYS - LAS

TYSLAS

Knoxville McGhee Tyson

Wed 11/12

5:25 am-9:39 am

1 stop7h 14m

Las Vegas Harry Reid Intl

Wed 11/12

12:43 am-9:37 am

1 stop5h 54m

$358

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 20 results
1
2

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 August 29, 2025.

To ensure you get the cheapest price possible for a flight from Knoxville to Las Vegas, you should look to book at least 27 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 $198). Flying from Knoxville to Las Vegas in March is currently the most expensive (average of $269). 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 September 11, 2025.

It’s optimal to fly from Knoxville to Las Vegas in the evening. By choosing this option you can save up to 37% 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 September 7, 2025.

Travelers seeking maximum savings on their Knoxville to Las Vegas flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday afternoons 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 September 11, 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
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
702 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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, 5 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 8h 33m. 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 ($107), Allegiant Air ($130), and Delta ($238) offers the cheapest pricing from Knoxville to Las Vegas. These flights start at 66% lower than the current average price 3 months from now.

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

    Looking at all options, your cheapest flight can be booked for $87. While the most popular route (Knoxville McGhee Tyson - Las Vegas Harry Reid Intl) can be booked for $174 on average, our data indicates $185 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. Charlotte sees the next most layovers on Knoxville to Las Vegas flights.

  • 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.

  • What are some popular points of interest to see during a layover in Charlotte?

    Carowind, Mint Museum Uptown, and NASCAR Hall of Fame are currently the most popular points of interest in Charlotte at the moment. Carowind, Mint Museum Uptown, and NASCAR Hall of Fame can be accessed by traveling approximately 8.2 mi, 5.4 mi, and 5.7 mi, respectively from Charlotte Douglas. Those landing in Charlotte looking to spend some time exploring during their layover can rent a car for about $44 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 $198). Flying from Knoxville to Las Vegas in March is currently the most expensive (average of $269). 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
Paradise
Henderson
North Las Vegas
Sunrise Manor
Winchester
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Primm
Mount Charleston
Mesquite
Needles
Boulder City

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$107Average$240FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$130Average$256FlexibilityNo cancel feeOn-time88%
DeltaCheapest$238Average$362FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$250Average$402FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$262Average$393FlexibilityNo cancel feeOn-time71%

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