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$46+ Cheap flights from Knoxville to Austin (TYS - AUS)

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — AUS
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Find cheap flights from Knoxville to Austin with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Austin Bergstrom are usually found in May or October, booked 58 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Knoxville to Austin

Cheapest flights from Knoxville to Austin
Explore the most affordable flight options available from Knoxville to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 10, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 4/7. 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 6/296:30 am
TYS
-
AUS
Nonstop2h 18m
Allegiant Air
Mon 7/68:42 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/7$98
This Cheapflightsfares deal was found by Cheapflights users on 4/8. 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 6/156:30 am
TYS
-
AUS
Nonstop2h 18m
Allegiant Air
Fri 6/198:38 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/8$110
This Cheapflightsfares deal was found by Cheapflights users on 4/7. 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.
Fri 5/296:00 am
TYS
-
AUS
Nonstop2h 36m
Allegiant Air
Mon 6/18:26 am
AUS
-
TYS
Nonstop2h 11m
Allegiant Air
Deal found 4/7$123
This Cheapflightsfares deal was found by Cheapflights users on 4/7. 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.
Fri 6/57:25 am
TYS
-
AUS
Nonstop2h 18m
Allegiant Air
Mon 6/89:33 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/7$127
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 7/276:30 am
TYS
-
AUS
Nonstop2h 22m
Allegiant Air
Fri 7/318:42 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/9$139
This Kiwi.com deal was found by Cheapflights users on 4/8. 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.
Fri 6/126:30 am
TYS
-
AUS
Nonstop2h 18m
Allegiant Air
Mon 6/158:38 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/8$141
This Cheapflightsfares deal was found by Cheapflights users on 4/8. 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 6/16:00 am
TYS
-
AUS
Nonstop2h 36m
Allegiant Air
Fri 6/59:33 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 4/8$149

Find flight deals from Knoxville to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Austin (AUS). 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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$98
(Cheapflightsfares)

One-way from

$46
(Kiwi.com)

Popular in

March

Cheapest in

May

Average price

$338

Good round-trip deal

$197 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Austin Bergstrom flight deals.
Search Deals
Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Austin Bergstrom flights.
Search Deals
From Knoxville McGhee Tyson to Austin Bergstrom
Search Deals
One-way flight from Knoxville McGhee Tyson to Austin Bergstrom
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Knoxville McGhee Tyson to Austin Bergstrom.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated April 10, 2026.
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

Cheapest round-trip

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 6/15

8:32 pm-9:13 am

1 stop13h 41m

Austin Bergstrom

Fri 6/19

8:38 am-11:59 am

Nonstop2h 21m

$209

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 5/29

6:45 pm-12:05 am

1 stop6h 20m

Austin Bergstrom

Tue 6/2

7:10 am-12:00 pm

1 stop3h 50m

$310

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 9/24

7:00 am-1:09 pm

1 stop7h 09m

Austin Bergstrom

Mon 9/28

5:30 pm-11:19 pm

1 stop4h 49m

$339

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 5/29

6:35 am-10:05 am

1 stop4h 30m

Austin Bergstrom

Mon 6/1

10:10 am-8:20 pm

2 stops9h 10m

$339
Quickest round-trip

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 6/15

7:45 pm-12:45 am

1 stop6h 00m

Austin Bergstrom

Fri 6/19

4:30 pm-9:10 pm

1 stop3h 40m

$339

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 6/15

3:54 pm-10:12 pm

1 stop7h 18m

Austin Bergstrom

Fri 6/19

1:31 pm-7:55 pm

1 stop5h 24m

$353

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 5/22

6:00 am-7:36 am

Nonstop2h 36m

Austin Bergstrom

Mon 5/25

9:13 pm-7:31 pm

3 stops21h 18m

$353

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 10/5

4:00 pm-10:45 pm

1 stop7h 45m

Austin Bergstrom

Sat 10/10

7:05 am-11:55 am

1 stop3h 50m

$354

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 6/22

7:45 pm-12:45 am

1 stop6h 00m

Austin Bergstrom

Fri 6/26

11:30 am-9:10 pm

2 stops8h 40m

$354

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 5/8

6:35 am-12:00 pm

2 stops6h 25m

Austin Bergstrom

Sun 5/10

1:40 pm-9:05 pm

1 stop6h 25m

$383

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/5

Showing 1-10 of 21 resultsSorted by cheapest first
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3

Compare providers for flights from Knoxville to Austin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Austin in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Austin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Austin flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Knoxville to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin 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 Austin

How far ahead should I book a flight from Knoxville to Austin?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Austin. Price data was last updated on April 3, 2026.

Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Austin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Knoxville to Austin?

Currently, May is the cheapest month in which you can book a flight from Knoxville to Austin (average of $86). Flying from Knoxville to Austin in February is currently the most expensive (average of $238). 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 AUS?

Find hourly flight availability from Knoxville to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 10, 2026.

One of the essential ways to save on airfare from Knoxville to Austin is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 47% on airfare.

How much does it cost to fly round-trip from Knoxville to Austin?

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated April 10, 2026.
Read through reviews of airlines operating flights from Knoxville to Austin, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,334 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,402 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,561 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Allegiant Air
7.3
Good
705 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.1
Good
11,564 reviews
Southwest
8.0
Very good
4,334 reviews

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Austin. 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 Austin flight route?

    This flight path from Knoxville McGhee Tyson to Austin Bergstrom was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Knoxville to Austin?

    Departing from Knoxville to Austin will take you 6h 20m. Knoxville and Austin are separated by a distance of 881 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Knoxville to Austin round-trip?

    Flying on Frontier is currently your cheapest option to Austin, with prices starting at $80. Additional round-trip tickets that might be worth considering are offered by Allegiant Air and Delta, with the lowest prices starting at $86 and $118, respectively. Frontier is 73% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Knoxville to Austin one-way?

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $45. Users have also found prices from $74 and $125 on Frontier and American Airlines, respectively.

  • What are the cheapest flights from Knoxville to Austin?

    The cheapest flight price from Knoxville to Austin is $166. On average you can expect to pay $250. The most popular route, (Knoxville McGhee Tyson - Austin Bergstrom), can usually be booked for $98.

  • Can I find deals for flights from Knoxville to Austin that include hotel bookings?

    Yes. In addition to deals on Knoxville to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Austin.

  • Can I find deals for business class flights from Knoxville to Austin?

    Yes. Cheapflights offers flight deals from Knoxville to Austin 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 Austin?

    Currently, May is the cheapest month in which you can book a flight from Knoxville to Austin (average of $86). Flying from Knoxville to Austin in February is currently the most expensive (average of $238). 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 Austin?

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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Knoxville to Austin

Discover the top 6 airlines that operate flights from Knoxville to Austin. 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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$80Average$390FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$86Average$146FlexibilityNo cancel feeOn-time88%
DeltaCheapest$118Average$333FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$233Average$318FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$358FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$279Average$367FlexibilityNo cancel feeOn-time63%

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