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Cheap flights from Las Vegas to Knoxville from $78

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Knoxville departing on 7/31. 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 Las Vegas to Knoxville

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
9:04 am - 3:58 pm
LAS
-
TYS
3h 54mnonstop
Allegiant Air Logo
6:30 am - 7:44 am
TYS
-
LAS
4h 14mnonstop
$159Allegiant Air
Fri, Sep 25 - Mon, Sep 28
Allegiant Air Logo
1:49 pm - 8:43 pm
LAS
-
TYS
3h 54mnonstop
Allegiant Air Logo
10:09 pm - 11:27 pm
TYS
-
LAS
4h 18mnonstop
$213Allegiant Air
Thu, Nov 5 - Mon, Nov 9
Multiple Airlines Logo
11:19 am - 6:13 pm
LAS
-
TYS
3h 54mnonstop
Multiple Airlines Logo
7:00 am - 11:36 am
TYS
-
LAS
7h 36m
1 stop
$225Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
Multiple Airlines Logo
9:24 pm - 7:36 pm
LAS
-
TYS
19h 12m
1 stop
Multiple Airlines Logo
2:47 pm - 3:54 pm
TYS
-
LAS
4h 07mnonstop
$233Multiple Airlines
Thu, Jul 30 - Mon, Aug 3
Frontier Logo
9:24 pm - 7:37 pm
LAS
-
TYS
19h 13m
1 stop
Frontier Logo
8:32 pm - 8:29 pm
TYS
-
LAS
26h 57m
1 stop
$238Frontier
Tue, Jun 9 - Mon, Jun 15
Multiple Airlines Logo
11:40 pm - 5:18 pm
LAS
-
TYS
14h 38m
1 stop
Multiple Airlines Logo
2:47 pm - 3:54 pm
TYS
-
LAS
4h 07mnonstop
$242Multiple Airlines
Wed, Jul 15 - Mon, Jul 27
Multiple Airlines Logo
6:30 am - 12:03 pm
LAS
-
TYS
26h 33m
1 stop
Multiple Airlines Logo
2:47 pm - 3:54 pm
TYS
-
LAS
4h 07mnonstop
$243Multiple Airlines
Thu, Jul 16 - Mon, Jul 27
Multiple Airlines Logo
12:59 am - 1:19 pm
LAS
-
TYS
9h 20m
1 stop
Multiple Airlines Logo
10:09 pm - 11:27 pm
TYS
-
LAS
4h 18mnonstop
$245Multiple Airlines
Wed, Nov 4 - Mon, Nov 9
Allegiant Air Logo
7:00 am - 1:57 pm
LAS
-
TYS
3h 57mnonstop
Allegiant Air Logo
2:47 pm - 3:54 pm
TYS
-
LAS
4h 07mnonstop
$248Allegiant Air
Fri, Jul 24 - Mon, Jul 27
Frontier Logo
6:15 am - 7:37 pm
LAS
-
TYS
10h 22m
1 stop
Frontier Logo
8:32 pm - 7:10 am
TYS
-
LAS
13h 38m
1 stop
$250Frontier
Wed, Jun 10 - Wed, Jun 17

Allegiant Air flights from Las Vegas to Knoxville

Our best Allegiant Air deals on Las Vegas to Knoxville flight tickets
Allegiant Air
Sep 25
LAS9:04 amLas Vegas Harry Reid Intl
3h 54m
TYS3:58 pmKnoxville McGhee Tyson
Sep 28
TYS6:30 amKnoxville McGhee Tyson
4h 14m
LAS7:44 amLas Vegas Harry Reid Intl
$159
Allegiant Air
Nov 5
LAS1:49 pmLas Vegas Harry Reid Intl
3h 54m
TYS8:43 pmKnoxville McGhee Tyson
Nov 9
TYS10:09 pmKnoxville McGhee Tyson
4h 18m
LAS11:27 pmLas Vegas Harry Reid Intl
$213
Allegiant Air
Jul 24
LAS7:00 amLas Vegas Harry Reid Intl
3h 57m
TYS1:57 pmKnoxville McGhee Tyson
Jul 27
TYS2:47 pmKnoxville McGhee Tyson
4h 07m
LAS3:54 pmLas Vegas Harry Reid Intl
$248

Frontier flights from Las Vegas to Knoxville

Our best Frontier deals on Las Vegas to Knoxville flight tickets
Frontier
Jun 9
LAS9:24 pmLas Vegas Harry Reid Intl
19h 13m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
Jun 15
TYS8:32 pmKnoxville McGhee Tyson
26h 57m
1 stop
LAS8:29 pmLas Vegas Harry Reid Intl
$238
Frontier
Jun 10
LAS6:15 amLas Vegas Harry Reid Intl
10h 22m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
Jun 17
TYS8:32 pmKnoxville McGhee Tyson
13h 38m
1 stop
LAS7:10 amLas Vegas Harry Reid Intl
$250
Frontier
Jun 12
LAS8:15 amLas Vegas Harry Reid Intl
8h 22m
1 stop
TYS7:37 pmKnoxville McGhee Tyson
Jun 15
TYS8:32 pmKnoxville McGhee Tyson
20h 16m
1 stop
LAS1:48 pmLas Vegas Harry Reid Intl
$252

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas to Knoxville 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 13, 2026.
Use the filters below to find and compare flights from Las Vegas to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Fri 9/25

9:04 am-3:58 pm

Nonstop3h 54m

Knoxville McGhee Tyson

Mon 9/28

6:30 am-7:44 am

Nonstop4h 14m

$159

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Thu 11/5

1:49 pm-8:43 pm

Nonstop3h 54m

Knoxville McGhee Tyson

Mon 11/9

10:09 pm-11:27 pm

Nonstop4h 18m

$213

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Fri 9/11

11:19 am-6:13 pm

Nonstop3h 54m

Knoxville McGhee Tyson

Sun 9/13

7:00 am-11:36 am

1 stop7h 36m

$225

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Thu 7/30

9:24 pm-7:36 pm

1 stop19h 12m

Knoxville McGhee Tyson

Mon 8/3

2:47 pm-3:54 pm

Nonstop4h 07m

$233

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Tue 6/9

9:24 pm-7:37 pm

1 stop19h 13m

Knoxville McGhee Tyson

Mon 6/15

8:32 pm-8:29 pm

1 stop26h 57m

$238

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Wed 7/15

11:40 pm-5:18 pm

1 stop14h 38m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-3:54 pm

Nonstop4h 07m

$242

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Thu 7/16

6:30 am-12:03 pm

1 stop26h 33m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-3:54 pm

Nonstop4h 07m

$243

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Wed 11/4

12:59 am-1:19 pm

1 stop9h 20m

Knoxville McGhee Tyson

Mon 11/9

10:09 pm-11:27 pm

Nonstop4h 18m

$245
Quickest round-trip

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Fri 7/24

7:00 am-1:57 pm

Nonstop3h 57m

Knoxville McGhee Tyson

Mon 7/27

2:47 pm-3:54 pm

Nonstop4h 07m

$248

Las VegasKnoxville

LAS - TYS

LASTYS

Las Vegas Harry Reid Intl

Wed 6/10

6:15 am-7:37 pm

1 stop10h 22m

Knoxville McGhee Tyson

Wed 6/17

8:32 pm-7:10 am

1 stop13h 38m

$250

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 Knoxville from

How to get the cheapest flight ticket from Las Vegas to Knoxville

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 Las Vegas and Knoxville?

What is the cheapest month to fly to Knoxville?

The month of January is, on average, the cheapest month to fly to Knoxville from Las Vegas, with most prices found around $239. If you aren’t able to travel during the month of January, then book flights to Knoxville from Las Vegas during September instead. Flights to Knoxville in September, while not as cheap as those in January, still average around $267.

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from Las Vegas to Knoxville is on a Thursday. Travelers who choose to depart for Knoxville on a Thursday will often find tickets for as low as $210. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Las Vegas to Knoxville for around $327.

What is the cheapest time of day to depart on your flight to Knoxville?

In the afternoon is the cheapest time of day to fly from Las Vegas to Knoxville when you can find flight prices for as low as $252. Flying to Knoxville in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the morning when prices are around $278.

What is the cheapest Las Vegas Harry Reid Intl to Knoxville McGhee Tyson flight route?

Fly from Las Vegas Harry Reid Intl to Knoxville McGhee Tyson for the best Las Vegas Harry Reid Intl - Knoxville McGhee Tyson flight prices

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

You are more likely to see cheaper flights to Knoxville from Las Vegas when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $324 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Las Vegas for as low as $137 on momondo.

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

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

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

As of May 2026, prices for Las Vegas to Knoxville flights are approximately 13% cheaper when compared to flights at the same time last year.

When to book flights from Las Vegas to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Las Vegas to Knoxville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Las Vegas to Knoxville (LAS to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Las Vegas to Knoxville

Best Price Found

$152

Fastest flight time

3h 54m

Direct flights

Tue, Fri and Sat

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Las Vegas in the past 72 hours is $152. The best round-trip flight deal from Las Vegas to Knoxville found on momondo in the last 72 hours is $283.
The fastest flight from Las Vegas to Knoxville takes 3h 54m
Direct flights go from Las Vegas to Knoxville on Tuesday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Knoxville. From Las Vegas there are direct flights to Knoxville McGhee Tyson (TYS).
Search flight deals

Frequently asked questions about flying from Las Vegas to Knoxville

  • How far is Las Vegas Harry Reid Intl to Knoxville McGhee Tyson by plane?

    Las Vegas Harry Reid Intl and Knoxville McGhee Tyson are 1734.7 mi apart from one another. A reasonable flight in good conditions will take 3h 54m.

  • When did momondo last update prices for flights from Las Vegas Harry Reid Intl Airport to Knoxville McGhee Tyson Airport?

    Prices for flights from Las Vegas Harry Reid Intl Airport to Knoxville McGhee Tyson Airport are updated daily.

  • How many operators does momondo search for flights from Las Vegas Harry Reid Intl Airport to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from Las Vegas Harry Reid Intl Airport to Knoxville McGhee Tyson 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 Las Vegas Harry Reid Intl Airport to Knoxville McGhee Tyson Airport.

  • What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

    The necessary travel and health documents for your Knoxville McGhee Tyson Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Las Vegas to Knoxville?

  • What is the most popular airline from Las Vegas to Knoxville?

Best airlines flying from Las Vegas to Knoxville

Compare and see reviews for airlines that fly from Las Vegas to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $134Free CancellationRating
7.3
708 reviews
Search Allegiant Air flights
DeltaPriceFrom $145Free CancellationRating
7.9
8,450 reviews
Search Delta flights
American AirlinesPriceFrom $250Free CancellationRating
7.1
11,661 reviews
Search American Airlines flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,708 reviews
Search United Airlines flights

  • Allegiant Air Flights From Las Vegas to Knoxville

    Allegiant Air flight deals from Las Vegas to Knoxville start from $134 round-trip. Over the 1 Allegiant Air flight for this route in a normal week, average airfare is usually $266 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Pigeon Forge
Gatlinburg
Cherokee
Bryson City
Morristown
Corbin
Alcoa
Crossville
Maryville
Murphy
Oak Ridge
Newport
Lenoir City
Kodak
Dandridge
Clinton
Jefferson City
Rockford

Why use momondo?

Why should I use momondo to find a flight deal from Las Vegas to Knoxville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Las Vegas to Knoxville for you.

Can I find flights from Las Vegas to Knoxville with flexible booking policies on momondo?

All flight searches from Las Vegas to Knoxville on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Las Vegas to Knoxville?

Once all potential Las Vegas to Knoxville 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 Las Vegas to Knoxville right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from Las Vegas and alert you when they change.

An easier way to manage your Knoxville trip

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