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Cheap flights from Austin to Knoxville from $62

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Knoxville departing on 10/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Austin to Knoxville

Cheap round-trip flights

Allegiant Air Logo
6:41 pm - 9:50 pmAUS-TYS
2h 09mnonstop
Allegiant Air Logo
4:23 pm - 5:51 pmTYS-AUS
2h 28mnonstop
$122Allegiant Air
Find Deal
Sun, Oct 5 - Thu, Oct 16
Allegiant Air Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Allegiant Air Logo
12:50 pm - 2:29 pmTYS-AUS
2h 39mnonstop
$133Allegiant Air
Find Deal
Mon, Nov 3 - Fri, Nov 7
Allegiant Air Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Allegiant Air Logo
12:50 pm - 2:29 pmTYS-AUS
2h 39mnonstop
$138Allegiant Air
Find Deal
Mon, Nov 3 - Fri, Nov 7
Allegiant Air Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Allegiant Air Logo
12:50 pm - 2:29 pmTYS-AUS
2h 39mnonstop
$155Allegiant Air
Find Deal
Mon, Nov 3 - Mon, Nov 10
Allegiant Air Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Allegiant Air Logo
12:50 pm - 2:29 pmTYS-AUS
2h 39mnonstop
$160Allegiant Air
Find Deal
Mon, Nov 3 - Mon, Nov 10
Multiple Airlines Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Multiple Airlines Logo
6:11 pm - 11:12 pmTYS-AUS
30h 01m1 stop
$163Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Multiple Airlines Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Multiple Airlines Logo
6:11 pm - 11:12 pmTYS-AUS
30h 01m1 stop
$169Multiple Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 10
Multiple Airlines Logo
3:03 pm - 6:12 pmAUS-TYS
2h 09mnonstop
Multiple Airlines Logo
9:09 pm - 11:12 pmTYS-AUS
27h 03m1 stop
$171Multiple Airlines
Find Deal
Mon, Nov 3 - Fri, Nov 7
Frontier Logo
5:00 am - 5:22 pmAUS-TYS
11h 22m1 stop
Frontier Logo
7:17 pm - 12:32 amTYS-AUS
6h 15m1 stop
$209Frontier
Find Deal
Sun, Nov 2 - Thu, Nov 6
Frontier Logo
6:00 am - 6:22 pmAUS-TYS
11h 22m1 stop
Frontier Logo
7:17 pm - 12:32 amTYS-AUS
6h 15m1 stop
$231Frontier
Find Deal
Thu, Nov 13 - Sun, Nov 16

Allegiant Air flights from Austin to Knoxville

Our best Allegiant Air deals on Austin to Knoxville flight tickets
Allegiant Air
Oct 5
AUS6:41 pmAustin Bergstrom
2h 09m
TYS9:50 pmKnoxville McGhee Tyson
Oct 16
TYS4:23 pmKnoxville McGhee Tyson
2h 28m
AUS5:51 pmAustin Bergstrom
$122
Find similar
Allegiant Air
Nov 3
AUS3:03 pmAustin Bergstrom
2h 09m
TYS6:12 pmKnoxville McGhee Tyson
Nov 7
TYS12:50 pmKnoxville McGhee Tyson
2h 39m
AUS2:29 pmAustin Bergstrom
$133
Find similar
Allegiant Air
Nov 3
AUS3:03 pmAustin Bergstrom
2h 09m
TYS6:12 pmKnoxville McGhee Tyson
Nov 7
TYS12:50 pmKnoxville McGhee Tyson
2h 39m
AUS2:29 pmAustin Bergstrom
$138
Find similar

Frontier flights from Austin to Knoxville

Our best Frontier deals on Austin to Knoxville flight tickets
Frontier
Nov 2
AUS5:00 amAustin Bergstrom
11h 22m
1 stop
TYS5:22 pmKnoxville McGhee Tyson
Nov 6
TYS7:17 pmKnoxville McGhee Tyson
6h 15m
1 stop
AUS12:32 amAustin Bergstrom
$209
Find similar
Frontier
Nov 13
AUS6:00 amAustin Bergstrom
11h 22m
1 stop
TYS6:22 pmKnoxville McGhee Tyson
Nov 16
TYS7:17 pmKnoxville McGhee Tyson
6h 15m
1 stop
AUS12:32 amAustin Bergstrom
$231
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Austin 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 September 17, 2025.
Use the filters below to find and compare flights from Austin to Knoxville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Sun 10/5

6:41 pm-9:50 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Thu 10/16

4:23 pm-5:51 pm

Nonstop2h 28m

$122

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Fri 11/7

12:50 pm-2:29 pm

Nonstop2h 39m

$133

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Fri 11/7

12:50 pm-2:29 pm

Nonstop2h 39m

$138

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Mon 11/10

12:50 pm-2:29 pm

Nonstop2h 39m

$155

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Mon 11/10

12:50 pm-2:29 pm

Nonstop2h 39m

$160

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Mon 11/10

6:11 pm-11:12 pm

1 stop30h 01m

$163

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Mon 11/10

6:11 pm-11:12 pm

1 stop30h 01m

$169

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Mon 11/3

3:03 pm-6:12 pm

Nonstop2h 09m

Knoxville McGhee Tyson

Fri 11/7

9:09 pm-11:12 pm

1 stop27h 03m

$171

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Sun 11/2

5:00 am-5:22 pm

1 stop11h 22m

Knoxville McGhee Tyson

Thu 11/6

7:17 pm-12:32 am

1 stop6h 15m

$209

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

Thu 11/13

6:00 am-6:22 pm

1 stop11h 22m

Knoxville McGhee Tyson

Sun 11/16

7:17 pm-12:32 am

1 stop6h 15m

$231

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 Austin 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 cheapest month to fly to Knoxville?

The month of August is, on average, the cheapest month to fly to Knoxville from Austin, with most prices found around $261. If you aren’t able to travel during the month of August, then book flights to Knoxville from Austin during January instead. Flights to Knoxville in January, while not as cheap as those in August, still average around $268.

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

The cheapest day to depart from Austin to Knoxville is on a Sunday. Travelers who choose to depart for Knoxville on a Sunday will often find tickets for as low as $110. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Austin to Knoxville for around $340.

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

In the evening is the cheapest time of day to fly from Austin to Knoxville when you can find flight prices for as low as $104. Flying to Knoxville in the evening 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 $210.

What is the cheapest Austin Bergstrom to Knoxville McGhee Tyson flight route?

Fly from Austin Bergstrom to Knoxville McGhee Tyson for the best Austin Bergstrom - Knoxville McGhee Tyson flight prices

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

You are more likely to see cheaper flights to Knoxville from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $291 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Austin for as low as $193 on momondo.

What cabin class options are available on Austin Bergstrom to Knoxville McGhee Tyson flights?

There is only 1 cabin class available to choose from on Austin Bergstrom to Knoxville McGhee Tyson flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Austin to Knoxville flight prices changed over time?

As of September 2025, prices for Austin to Knoxville flights are approximately 44% more expensive when compared to flights at the same time last year.

When to book flights from Austin to Knoxville

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

Cheap Austin to Knoxville (AUS to TYS) flight deals and tips

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

Best Price Found

$120

Fastest flight time

2h 04m

Direct flights

Mon, Tue, Thu, Fri and Sat

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Austin in the past 72 hours is $120. The best round-trip flight deal from Austin to Knoxville found on momondo in the last 72 hours is $156.
The fastest flight from Austin to Knoxville takes 2h 04m
Direct flights go from Austin to Knoxville on Monday, Tuesday, Thursday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)
Search flight deals

  • How far is Austin Bergstrom to Knoxville McGhee Tyson by plane?

    The straight-line distance from Austin Bergstrom to Knoxville McGhee Tyson is 889.3 mi. 2h 04m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Austin Bergstrom Airport to Knoxville McGhee Tyson Airport?

    Prices for flights from Austin Bergstrom Airport to Knoxville McGhee Tyson Airport refresh daily.

  • How many operators does momondo search for flights from Austin Bergstrom Airport to Knoxville McGhee Tyson Airport?

  • How old do you have to be to fly from Austin Bergstrom 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 Austin Bergstrom Airport to Knoxville McGhee Tyson Airport.

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

    The travel and health documents you'll need for your trip to Knoxville McGhee Tyson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline from Austin to Knoxville?

Best airlines flying from Austin to Knoxville

Compare and see reviews for airlines that fly from Austin to Knoxville with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $85Free CancellationRating
7.2
699 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $174Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
7,961 reviews
Search Delta flights
American AirlinesPriceFrom $230Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

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
Crossville
Maryville
Murphy
Alcoa
Oak Ridge
Lenoir City
Newport
Kodak
Dandridge
Clinton
Jefferson City
Rockford

Why use momondo?

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

Finding the right flight to Knoxville from Austin is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Knoxville quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Austin to Knoxville flights to just show those with flexible booking policies.

How can momondo help me find flights from Austin to Knoxville?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Knoxville from Austin.

I’m not ready to book a flight from Austin to Knoxville right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Austin to Knoxville flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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