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Cheap flights from Knoxville to Austin from $81

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Austin departing on 1/8. 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 Knoxville to Austin

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
8:38 am - 11:59 am
AUS
-
TYS
2h 21mnonstop
$172Allegiant Air
Mon, Jun 1 - Mon, Jun 8
Frontier Logo
4:46 pm - 12:14 am
TYS
-
AUS
8h 28m1 stop
Frontier Logo
6:45 am - 3:28 pm
AUS
-
TYS
7h 43m1 stop
$183Frontier
Mon, Jan 5 - Thu, Jan 8
Multiple Airlines Logo
11:59 am - 9:35 pm
TYS
-
AUS
10h 36m1 stop
Multiple Airlines Logo
7:25 am - 8:39 am
AUS
-
TYS
24h 14m1 stop
$186Multiple Airlines
Sat, Jan 10 - Wed, Jan 14
Multiple Airlines Logo
9:29 am - 9:35 pm
TYS
-
AUS
13h 06m1 stop
Multiple Airlines Logo
4:59 pm - 10:10 am
AUS
-
TYS
16h 11m1 stop
$187Multiple Airlines
Thu, Jan 15 - Thu, Jan 22
Frontier Logo
4:25 pm - 12:16 am
TYS
-
AUS
8h 51m1 stop
Frontier Logo
6:55 am - 3:35 pm
AUS
-
TYS
7h 40m1 stop
$197Frontier
Fri, Jan 23 - Mon, Feb 2
Multiple Airlines Logo
9:29 am - 9:35 pm
TYS
-
AUS
13h 06m1 stop
Multiple Airlines Logo
7:25 am - 12:05 pm
AUS
-
TYS
27h 40m2 stops
$214Multiple Airlines
Thu, Jan 15 - Thu, Jan 22
Multiple Airlines Logo
7:15 am - 11:24 pm
TYS
-
AUS
17h 09m1 stop
Multiple Airlines Logo
7:25 am - 5:09 pm
AUS
-
TYS
8h 44m1 stop
$220Multiple Airlines
Mon, Jan 26 - Sat, Jan 31
Multiple Airlines Logo
7:15 am - 9:35 pm
TYS
-
AUS
15h 20m2 stops
Multiple Airlines Logo
11:30 am - 8:39 am
AUS
-
TYS
20h 09m1 stop
$221Multiple Airlines
Mon, Jan 26 - Sat, Jan 31
Multiple Airlines Logo
11:59 am - 9:35 pm
TYS
-
AUS
10h 36m1 stop
Multiple Airlines Logo
4:59 pm - 5:53 pm
AUS
-
TYS
23h 54m2 stops
$225Multiple Airlines
Sat, Jan 10 - Wed, Jan 14
Multiple Airlines Logo
9:29 am - 9:35 pm
TYS
-
AUS
13h 06m1 stop
Multiple Airlines Logo
7:25 am - 12:05 pm
AUS
-
TYS
27h 40m3 stops
$234Multiple Airlines
Thu, Jan 15 - Thu, Jan 22

Frontier flights from Knoxville to Austin

Our best Frontier deals on Knoxville to Austin flight tickets
Frontier
Jan 5
TYS4:46 pmKnoxville McGhee Tyson
8h 28m
1 stop
AUS12:14 amAustin Bergstrom
Jan 8
AUS6:45 amAustin Bergstrom
7h 43m
1 stop
TYS3:28 pmKnoxville McGhee Tyson
$183
Find similar
Frontier
Jan 23
TYS4:25 pmKnoxville McGhee Tyson
8h 51m
1 stop
AUS12:16 amAustin Bergstrom
Feb 2
AUS6:55 amAustin Bergstrom
7h 40m
1 stop
TYS3:35 pmKnoxville McGhee Tyson
$197
Find similar
Frontier
Jan 1
TYS4:26 pmKnoxville McGhee Tyson
8h 48m
1 stop
AUS12:14 amAustin Bergstrom
Jan 5
AUS6:45 amAustin Bergstrom
8h 06m
1 stop
TYS3:51 pmKnoxville McGhee Tyson
$532
Find similar

Delta flights from Knoxville to Austin

Our best Delta deals on Knoxville to Austin flight tickets
Delta
Jan 13
TYS2:37 pmKnoxville McGhee Tyson
6h 08m
1 stop
AUS7:45 pmAustin Bergstrom
Jan 20
AUS5:20 amAustin Bergstrom
5h 53m
1 stop
TYS12:13 pmKnoxville McGhee Tyson
$242
Find similar
Delta
Feb 28
TYS12:00 pmKnoxville McGhee Tyson
4h 46m
1 stop
AUS3:46 pmAustin Bergstrom
Mar 7
AUS8:10 amAustin Bergstrom
6h 05m
1 stop
TYS3:15 pmKnoxville McGhee Tyson
$289
Find similar
Delta
Feb 28
TYS6:20 amKnoxville McGhee Tyson
7h 41m
1 stop
AUS1:01 pmAustin Bergstrom
Mar 5
AUS5:20 amAustin Bergstrom
5h 51m
1 stop
TYS12:11 pmKnoxville McGhee Tyson
$309
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Knoxville to Austin 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 December 18, 2025.
Use the filters below to find and compare flights from Knoxville to Austin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 6/1

6:00 am-7:36 am

Nonstop2h 36m

Austin Bergstrom

Mon 6/8

8:38 am-11:59 am

Nonstop2h 21m

$172

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 1/5

4:46 pm-12:14 am

1 stop8h 28m

Austin Bergstrom

Thu 1/8

6:45 am-3:28 pm

1 stop7h 43m

$183

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Sat 1/10

11:59 am-9:35 pm

1 stop10h 36m

Austin Bergstrom

Wed 1/14

7:25 am-8:39 am

1 stop24h 14m

$186

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 1/15

9:29 am-9:35 pm

1 stop13h 06m

Austin Bergstrom

Thu 1/22

4:59 pm-10:10 am

1 stop16h 11m

$187

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 1/23

4:25 pm-12:16 am

1 stop8h 51m

Austin Bergstrom

Mon 2/2

6:55 am-3:35 pm

1 stop7h 40m

$197

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 1/15

9:29 am-9:35 pm

1 stop13h 06m

Austin Bergstrom

Thu 1/22

7:25 am-12:05 pm

2 stops27h 40m

$214

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 1/26

7:15 am-11:24 pm

1 stop17h 09m

Austin Bergstrom

Sat 1/31

7:25 am-5:09 pm

1 stop8h 44m

$220

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 1/26

7:15 am-9:35 pm

2 stops15h 20m

Austin Bergstrom

Sat 1/31

11:30 am-8:39 am

1 stop20h 09m

$221

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Sat 1/10

11:59 am-9:35 pm

1 stop10h 36m

Austin Bergstrom

Wed 1/14

4:59 pm-5:53 pm

2 stops23h 54m

$225

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 1/15

9:29 am-9:35 pm

1 stop13h 06m

Austin Bergstrom

Thu 1/22

7:25 am-12:05 pm

3 stops27h 40m

$234

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 Austin from

How to get the cheapest flight ticket from Knoxville to Austin

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 Austin?

The cheapest month to fly to Austin from Knoxville is in October. Flight prices, which tend to average around $206, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in October, then December is your next best option. Flight prices from Knoxville to Austin during December average around $237.

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

The cheapest day to depart on your flight to Austin is on a Tuesday when prices can be found for as low as $124. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Knoxville to Austin for around $159.

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

At noon is the cheapest time of day to fly from Knoxville to Austin when you can find flight prices for as low as $99. Flying to Austin at noon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the afternoon, with an average ticket price of $155. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

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

You are more likely to see cheaper flights to Austin from Knoxville when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $290 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Knoxville for as low as $133 on momondo.

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

There is only 1 cabin class available to choose from on Knoxville McGhee Tyson to Austin Bergstrom 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 Knoxville to Austin flights?

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

How have Knoxville to Austin flight prices changed over time?

As of December 2025, prices for Knoxville to Austin flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Knoxville to Austin

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

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

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

Best Price Found

$304

Fastest flight time

2h 34m

Direct flights

Tue and Sun

Airports in Austin

1 airport
The best one-way flight to Austin from Knoxville in the past 72 hours is $304. The best round-trip flight deal from Knoxville to Austin found on momondo in the last 72 hours is $122.
The fastest flight from Knoxville to Austin takes 2h 34m
Direct flights go from Knoxville to Austin on Tuesday and Sunday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Austin. From Knoxville there are direct flights to Austin Bergstrom (AUS).
Search flight deals

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

    A flight from Knoxville McGhee Tyson to Austin Bergstrom will travel around 889.3 mi. A reasonable flight in good conditions will take 2h 34m.

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

    Prices for flights from Knoxville McGhee Tyson Airport to Austin Bergstrom Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Knoxville McGhee Tyson Airport to Austin Bergstrom Airport.

  • What documentation or ID do you need to fly to Austin Bergstrom Airport?

    The necessary travel and health documents for your Austin Bergstrom 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 Knoxville to Austin?

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

Best airlines flying from Knoxville to Austin

Compare and see reviews for airlines that fly from Knoxville to Austin with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $88Free CancellationRating
7.2
700 reviews
Search Allegiant Air flights
DeltaPriceFrom $214Free CancellationRating
7.9
8,005 reviews
Search Delta flights
United AirlinesPriceFrom $233Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
American AirlinesPriceFrom $248Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights

Traveling to a place near Austin?

Book flights to Austin if you plan to visit one of these locations
Fredericksburg
Wimberley
San Marcos
Round Rock
Georgetown
Canyon Lake
Marble Falls
Horseshoe Bay
Cedar Park
Dripping Springs
Pflugerville
Kyle
Seguin
Bastrop
Buda
Flatonia

Why use momondo?

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

Finding the right flight to Austin from Knoxville 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 Austin quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Austin from Knoxville with this policy.

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

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

Of course. momondo tracks the price of Knoxville to Austin flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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