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Cheap flights from Austin to Knoxville from $80

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 2/9. 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

Enter your travel dates to find the best prices.
Allegiant Air Logo
8:26 am - 11:37 am
AUS
-
TYS
2h 11mnonstop
Allegiant Air Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
$149Allegiant Air
vie., may. 29 - lun., jun. 1
Frontier Logo
3:16 pm - 3:30 pm
AUS
-
TYS
23h 14m
1 stop
Frontier Logo
4:30 pm - 12:16 am
TYS
-
AUS
8h 46m
1 stop
$169Frontier
jue., feb. 5 - lun., feb. 9
Frontier Logo
6:55 am - 3:30 pm
AUS
-
TYS
7h 35m
1 stop
Frontier Logo
4:30 pm - 12:16 am
TYS
-
AUS
8h 46m
1 stop
$195Frontier
vie., feb. 6 - lun., feb. 9
Frontier Logo
6:45 am - 7:18 pm
AUS
-
TYS
11h 33m
1 stop
Frontier Logo
8:13 pm - 11:13 pm
TYS
-
AUS
28h 00m
1 stop
$198Frontier
lun., feb. 16 - lun., feb. 23
Frontier Logo
10:16 am - 7:27 pm
AUS
-
TYS
8h 11m
1 stop
Frontier Logo
8:13 pm - 11:13 pm
TYS
-
AUS
28h 00m
1 stop
$207Frontier
vie., feb. 20 - lun., feb. 23
Frontier Logo
11:00 am - 3:28 pm
AUS
-
TYS
27h 28m
1 stop
Frontier Logo
4:20 pm - 12:21 am
TYS
-
AUS
9h 01m
1 stop
$214Frontier
jue., abr. 9 - lun., abr. 13
Multiple Airlines Logo
7:41 pm - 10:08 am
AUS
-
TYS
37h 27m
2 stops
Multiple Airlines Logo
8:13 pm - 11:13 pm
TYS
-
AUS
28h 00m
1 stop
$237Multiple Airlines
lun., feb. 16 - lun., feb. 23
Multiple Airlines Logo
8:30 am - 10:10 pm
AUS
-
TYS
36h 40m
2 stops
Multiple Airlines Logo
3:50 pm - 10:29 am
TYS
-
AUS
19h 39m
1 stop
$238Multiple Airlines
mié., feb. 18 - mié., feb. 25
Multiple Airlines Logo
7:15 am - 11:16 am
AUS
-
TYS
27h 01m
2 stops
Multiple Airlines Logo
3:50 pm - 8:53 pm
TYS
-
AUS
30h 03m
1 stop
$242Multiple Airlines
mié., feb. 18 - mié., feb. 25
Multiple Airlines Logo
10:16 am - 7:27 pm
AUS
-
TYS
8h 11m
1 stop
Multiple Airlines Logo
2:06 pm - 4:04 pm
TYS
-
AUS
26h 58m
1 stop
$243Multiple Airlines
vie., feb. 20 - lun., feb. 23

Frontier flights from Austin to Knoxville

Our best Frontier deals on Austin to Knoxville flight tickets
Frontier
Feb 5
AUS3:16 pmAustin Bergstrom
23h 14m
1 stop
TYS3:30 pmKnoxville McGhee Tyson
Feb 9
TYS4:30 pmKnoxville McGhee Tyson
8h 46m
1 stop
AUS12:16 amAustin Bergstrom
$169
Frontier
Feb 6
AUS6:55 amAustin Bergstrom
7h 35m
1 stop
TYS3:30 pmKnoxville McGhee Tyson
Feb 9
TYS4:30 pmKnoxville McGhee Tyson
8h 46m
1 stop
AUS12:16 amAustin Bergstrom
$195
Frontier
Feb 16
AUS6:45 amAustin Bergstrom
11h 33m
1 stop
TYS7:18 pmKnoxville McGhee Tyson
Feb 23
TYS8:13 pmKnoxville McGhee Tyson
28h 00m
1 stop
AUS11:13 pmAustin Bergstrom
$198

United Airlines flights from Austin to Knoxville

Our best United Airlines deals on Austin to Knoxville flight tickets
United Airlines
Feb 14
AUS12:17 pmAustin Bergstrom
7h 20m
2 stops
TYS8:37 pmKnoxville McGhee Tyson
Feb 21
TYS6:45 amKnoxville McGhee Tyson
6h 22m
1 stop
AUS12:07 pmAustin Bergstrom
$304
United Airlines
Jan 30
AUS9:35 amAustin Bergstrom
10h 17m
2 stops
TYS8:52 pmKnoxville McGhee Tyson
Feb 2
TYS1:59 pmKnoxville McGhee Tyson
10h 00m
2 stops
AUS10:59 pmAustin Bergstrom
$688

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 enero 21, 2026.
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

vie. 5/29

8:26 am-11:37 am

Nonstop2h 11m

Knoxville McGhee Tyson

lun. 6/1

6:00 am-7:36 am

Nonstop2h 36m

$149

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

jue. 2/5

3:16 pm-3:30 pm

1 stop23h 14m

Knoxville McGhee Tyson

lun. 2/9

4:30 pm-12:16 am

1 stop8h 46m

$169

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

vie. 2/6

6:55 am-3:30 pm

1 stop7h 35m

Knoxville McGhee Tyson

lun. 2/9

4:30 pm-12:16 am

1 stop8h 46m

$195

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

lun. 2/16

6:45 am-7:18 pm

1 stop11h 33m

Knoxville McGhee Tyson

lun. 2/23

8:13 pm-11:13 pm

1 stop28h 00m

$198

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

vie. 2/20

10:16 am-7:27 pm

1 stop8h 11m

Knoxville McGhee Tyson

lun. 2/23

8:13 pm-11:13 pm

1 stop28h 00m

$207

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

jue. 4/9

11:00 am-3:28 pm

1 stop27h 28m

Knoxville McGhee Tyson

lun. 4/13

4:20 pm-12:21 am

1 stop9h 01m

$214

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

lun. 2/16

7:41 pm-10:08 am

2 stops37h 27m

Knoxville McGhee Tyson

lun. 2/23

8:13 pm-11:13 pm

1 stop28h 00m

$237

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

mié. 2/18

8:30 am-10:10 pm

2 stops36h 40m

Knoxville McGhee Tyson

mié. 2/25

3:50 pm-10:29 am

1 stop19h 39m

$238

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

mié. 2/18

7:15 am-11:16 am

2 stops27h 01m

Knoxville McGhee Tyson

mié. 2/25

3:50 pm-8:53 pm

1 stop30h 03m

$242

AustinKnoxville

AUS - TYS

AUSTYS

Austin Bergstrom

vie. 2/20

10:16 am-7:27 pm

1 stop8h 11m

Knoxville McGhee Tyson

lun. 2/23

2:06 pm-4:04 pm

1 stop26h 58m

$243

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 December is, on average, the cheapest month to fly to Knoxville from Austin, with most prices found around $225. If you aren’t able to travel during the month of December, then book flights to Knoxville from Austin during October instead. Flights to Knoxville in October, while not as cheap as those in December, still average around $248.

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 $140. When flying out on a Wednesday, 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 afternoon when prices are around $215.

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 $282 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 $139 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.

Can stopping save me money on Austin to Knoxville flights?

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

How have Austin to Knoxville flight prices changed over time?

As of January 2026, prices for Austin to Knoxville flights are approximately 23% 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

$127

Fastest flight time

3h 59m

Direct flights

Tue and Sat

Airports in Knoxville

1 airport
The best one-way flight to Knoxville from Austin in the past 72 hours is $127. The best round-trip flight deal from Austin to Knoxville found on momondo in the last 72 hours is $140.
The fastest flight from Austin to Knoxville takes 3h 59m
Direct flights go from Austin to Knoxville on Tuesday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Knoxville. From Austin there are direct flights to 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. 3h 59m 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 $82Free CancellationRating
7.2
705 reviews
Search Allegiant Air flights
DeltaPriceFrom $125Free CancellationRating
7.9
8,087 reviews
Search Delta flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
9,188 reviews
Search United Airlines flights
American AirlinesPriceFrom $223Free CancellationRating
7.2
11,169 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
Murphy
Alcoa
Crossville
Maryville
Oak Ridge
Newport
Lenoir City
Kodak
Dandridge
Jefferson City
Clinton
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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