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Cheap Flights from Knoxville (TYS) to Austin (AUS)

Compare Knoxville to Austin-Bergstrom flight deals

Find the cheapest month or even day of the year to fly to Austin-Bergstrom

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Flight deals from Knoxville to Austin-Bergstrom

Looking for a cheap last-minute deal or the best return flight from Knoxville to Austin-Bergstrom? Find the lowest prices on one-way and return tickets right here.
Austin.$131 per passenger.Departing Fri, 12 Dec, returning Mon, 15 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 12 Dec, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 15 Dec, arriving in Knoxville.Price includes taxes and charges.From $131, select.
Austin.$145 per passenger.Departing Thu, 16 Oct, returning Fri, 31 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Thu, 16 Oct, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 31 Oct, arriving in Knoxville.Price includes taxes and charges.From $145, select.
Austin.$153 per passenger.Departing Fri, 19 Sep, returning Thu, 2 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 19 Sep, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Thu, 2 Oct, arriving in Knoxville.Price includes taxes and charges.From $153, select.
Austin.$167 per passenger.Departing Thu, 16 Oct, returning Mon, 3 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Thu, 16 Oct, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 3 Nov, arriving in Knoxville.Price includes taxes and charges.From $167, select.
Austin.$183 per passenger.Departing Fri, 19 Sep, returning Mon, 22 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 19 Sep, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 22 Sep, arriving in Knoxville.Price includes taxes and charges.From $183, select.
Austin.$208 per passenger.Departing Mon, 15 Dec, returning Sat, 3 Jan.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 15 Dec, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Sat, 3 Jan, arriving in Knoxville.Price includes taxes and charges.From $208, select.
Austin.$229 per passenger.Departing Thu, 13 Nov, returning Sun, 16 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Knoxville on Thu, 13 Nov, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Sun, 16 Nov, arriving in Knoxville.Price includes taxes and charges.From $229, select.
Austin.$235 per passenger.Departing Mon, 3 Nov, returning Mon, 17 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 3 Nov, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 17 Nov, arriving in Knoxville.Price includes taxes and charges.From $235, select.

Find the cheapest month to fly from Knoxville to Austin-Bergstrom

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Knoxville to Austin-Bergstrom flights are currently cheapest in December.
Sep
from $183
Oct
from $145
Nov
from $229
Dec
from $131
Jan
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Feb
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Mar
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Apr
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May
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Jun
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Jul
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Aug
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Direct flights from Knoxville to Austin-Bergstrom

Knoxville to Austin-Bergstrom: Alternative routes

Compare routes from Knoxville to Austin below. You may find an airport to fly into that's cheaper, faster, or easier than Austin-Bergstrom.

Knoxville to Austin: Flight information

The things to know before you go.
Cheapest flight found$131
Cheapest month to flyDecember
Average flight time2 hrs, 32 mins
Most popular airlineAllegiant Air
Average flights per week2

Finding cheap flights from Knoxville to Austin-Bergstrom: Frequently asked questions

The best price we found for a return flight from Knoxville to Austin-Bergstrom is $131. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 32 minutes is the average flight time from Knoxville to Austin-Bergstrom.
Allegiant Air flies direct from Knoxville to Austin-Bergstrom.
As of September 2025, there are 2 flights per week flying from Knoxville to Austin-Bergstrom.
The cheapest month to fly from Knoxville to Austin-Bergstrom is usually December.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Knoxville Airport to Austin-Bergstrom Airport on Friday, 12 December 2025.
Yes – the average flight time is 2 hours and 32 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Austin-Bergstrom but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Austin is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Allegiant Air offers the cheapest flight tickets to Austin-Bergstrom.

Flying from McGhee Tyson Airport (TYS) to Austin-Bergstrom International Airport (AUS): what you need to know

  • Around 2 hours 30 minutes is how long you can expect to be in the air on a direct flight from McGhee Tyson Airport to Austin-Bergstrom International Airport.

  • Austin's timezone is UTC-5, which makes Austin one hour behind Knoxville.

  • Give yourself enough time to make your TYS to AUS flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months such as July, you'll want to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead of an international flight when you fly during a peak period in general.

  • Allegiant Air is your gateway to exploring Austin (and maybe even some other exciting parts of United States!). Check out the direct flights from McGhee Tyson Airport to Austin-Bergstrom International Airport offered by this popular carrier.

  • The airline that tops the list for bookings on this route is Allegiant Air.

  • With 76.19% of its services landing as planned, Allegiant Air is the most punctual carrier offering TYS to AUS flights.

How to find the cheapest flights from McGhee Tyson Airport (TYS) to Austin-Bergstrom International Airport (AUS)

  • Currently, $66 is the cheapest price we've seen for a one-way McGhee Tyson Airport to Austin-Bergstrom International Airport flight. The best price for a return ticket is $131. Keep in mind that fares may change due to availability at the time of booking.

  • Get cheap tickets from TYS to AUS by booking 11 months ahead. Based on our research, that's the sweet spot for picking up a bargain.

  • Organise your trip for October. That's the cheapest month for flights from McGhee Tyson Airport to Austin-Bergstrom International Airport. If you have flexibility with your dates, use the 'Whole month' tool to see the cheapest price across each month.

  • Getting your hands on cheap flights from TYS to AUS is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll let you know as soon as a lower fare pops up.

  • Pick your ideal departure and arrival times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from McGhee Tyson Airport to Austin-Bergstrom International Airport.

Handy information about McGhee Tyson Airport (TYS)

  • You'll find TYS at 2055 Alcoa Highway.

  • Of the flights that depart from McGhee Tyson Airport, 78.98% land on time at their destination.

  • To get to McGhee Tyson Airport from central Knoxville, it'll take about 20 minutes if you're going by car. This depends on traffic though. It's approximately 23 kilometres from the airport to the city centre.

  • Need a handy hotel close to TYS? If you're catching an early flight from McGhee Tyson Airport to Austin-Bergstrom International Airport, these accommodation options will put you moments from your departure gate:

Arriving at Austin-Bergstrom International Airport (AUS)

Getting from Austin-Bergstrom International Airport (AUS) to central Austin

  • AUS is located at 3600 Presidential Blvd.

  • Austin-Bergstrom International Airport to the centre of Austin has a drive time of about 25 minutes. It's approximately 19 kilometres away.

  • It takes around 3 hours 25 minutes if you're travelling by public transport.

When to fly to Austin-Bergstrom International Airport (AUS)

  • The quietest month for a flight from McGhee Tyson Airport to Austin-Bergstrom International Airport is April, while July is the most popular. Pick the best time to go to Austin based on whether you prefer a more fast-paced or easygoing experience.

  • When booking your flight from McGhee Tyson Airport to Austin-Bergstrom International Airport, think about the type of weather you enjoy. August is the warmest month in Austin, with temperatures ranging from 23ºC (73ºF) to 41ºC (106ºF).

  • Search for cheap tickets from TYS to AUS in January if you like cooler conditions. Temperatures are at their lowest around then, ranging between 3ºC (37ºF) and 19ºC (66ºF) on average.

Explore more of United States

  • You've done Austin, now it's time to explore other corners of United States. Travel around 241 kilometres east to Houston to tick off its top attractions. From The Houston Museum of Natural Science to The Museum of Fine Arts, Houston, Beck Building and Hermann Park, you've got a jam-packed schedule ahead.

  • Around 121 kilometres south-west of Austin, San Antonio is another favourite stop in United States. Experience major highlights starting with The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral.

Plan the rest of your trip from Knoxville to Austin

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.