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67 € Cheap Flights from Knoxville to Austin-Bergstrom

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 Airport to Austin-Bergstrom Airport? If you want to travel next month, return fares start from 67 €. Find the lowest prices on one-way and return tickets right here.
Austin.67 € per passenger.Departing Mon, 31 Aug, returning Fri, 11 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 31 Aug, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 11 Sep, arriving in Knoxville.Price includes taxes and charges.From 67 €, select.
Austin.67 € per passenger.Departing Fri, 14 Aug, returning Fri, 28 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 14 Aug, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 28 Aug, arriving in Knoxville.Price includes taxes and charges.From 67 €, select.
Austin.80 € per passenger.Departing Thu, 1 Oct, returning Sun, 18 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Thu, 1 Oct, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Sun, 18 Oct, arriving in Knoxville.Price includes taxes and charges.From 80 €, select.
Austin.86 € per passenger.Departing Mon, 14 Sep, returning Sun, 4 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Sep, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Sun, 4 Oct, arriving in Knoxville.Price includes taxes and charges.From 86 €, select.
Austin.88 € per passenger.Departing Fri, 31 Jul, returning Mon, 17 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 31 Jul, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 17 Aug, arriving in Knoxville.Price includes taxes and charges.From 88 €, select.
Austin.89 € per passenger.Departing Mon, 14 Sep, returning Fri, 18 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Sep, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 18 Sep, arriving in Knoxville.Price includes taxes and charges.From 89 €, select.
Austin.94 € per passenger.Departing Mon, 26 Oct, returning Mon, 2 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 26 Oct, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 2 Nov, arriving in Knoxville.Price includes taxes and charges.From 94 €, select.
Austin.116 € per passenger.Departing Mon, 2 Nov, returning Fri, 13 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 2 Nov, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 13 Nov, arriving in Knoxville.Price includes taxes and charges.From 116 €, select.
Austin.118 € per passenger.Departing Mon, 14 Dec, returning Wed, 23 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Dec, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Wed, 23 Dec, arriving in Knoxville.Price includes taxes and charges.From 118 €, select.
Austin.126 € per passenger.Departing Mon, 23 Nov, returning Fri, 11 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Mon, 23 Nov, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 11 Dec, arriving in Knoxville.Price includes taxes and charges.From 126 €, select.
Austin.131 € per passenger.Departing Fri, 17 Jul, returning Mon, 20 Jul.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Knoxville on Fri, 17 Jul, arriving in Austin-Bergstrom.Inbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 20 Jul, arriving in Knoxville.Price includes taxes and charges.From 131 €, select.
Austin.331 € per passenger.Departing Mon, 27 Jul, returning Tue, 8 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Knoxville on Mon, 27 Jul, arriving in Austin-Bergstrom.Inbound indirect flight with Delta, departs from Austin-Bergstrom on Tue, 8 Sep, arriving in Knoxville.Price includes taxes and charges.From 331 €, 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 August.
Jul
from 131 €
Aug
from 67 €
Sep
from 89 €
Oct
from 80 €
Nov
from 116 €
Dec
from 118 €
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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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.

Austin-Bergstrom

10km from central Austin
ClosestCheapest
from 67 €
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Killeen Gray AAF

88km from central Austin
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Knoxville to Austin: Flight information

The things to know before you go.
Cheapest flight found67 €
Cheapest month to flyAugust
Average flight time2 hrs, 33 mins
Most popular airlineAllegiant Air
Average flights per week3

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 67 €. 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 33 minutes is the average flight time from Knoxville to Austin-Bergstrom.
Allegiant Air, Southwest Airlines and Delta fly direct from Knoxville to Austin-Bergstrom.
As of July 2026, there are 3 flights per week flying from Knoxville to Austin-Bergstrom.
The cheapest month to fly from Knoxville to Austin-Bergstrom is usually August.
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, 14 August 2026.
Yes – the average flight time is 2 hours and 33 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 Knoxville Airport (TYS) to Austin-Bergstrom Airport (AUS): what you need to know

  • The average time for a direct flight from Knoxville Airport to Austin-Bergstrom Airport is 2 hours 25 minutes.

  • The timezone in Austin is UTC-6, which is one hour behind Knoxville.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Make sure you're at the airport on time to catch your TYS to AUS flight.

  • You can expect longer lines in popular months like October. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a smart move.

  • A range of airlines operate direct flights from Knoxville Airport to Austin-Bergstrom Airport, so jetting off to Austin (and then discovering more of the United States!) is easy. The most popular carriers that fly nonstop include:

  • The airline that serves the most passengers on this route is Allegiant Air.

  • Among carriers operating TYS to AUS flights, Allegiant Air has the highest percentage of on-time landings.

How to find the cheapest flights from Knoxville Airport (TYS) to Austin-Bergstrom Airport (AUS)

  • The lowest price we've found for a one-way Knoxville Airport to Austin-Bergstrom Airport flight is 36 €. A return ticket is currently 67 €. Depending on the availability and when you book, these fares could change.

  • Book five months before flying. After crunching the numbers on our calendar, this is how far you should book ahead to find cheap tickets from TYS to AUS.

  • October is the cheapest month for flights from Knoxville Airport to Austin-Bergstrom Airport. If you need to fly during a different time of year, the 'Whole month' tool will give you the lowest airfares across every month.

  • Save time searching for cheap flights from TYS to AUS by setting up a Price Alert. You'll receive an email or push notification on the app when a lower fare becomes available.

  • Secure the right flight for you with the help of the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Knoxville Airport to Austin-Bergstrom Airport, use the 'Sort by' tool. You can also filter results by airline, departure and arrival times, and journey duration.

Handy information about Knoxville Airport (TYS)

  • You'll find TYS at 2055 Alcoa Highway.

  • When it comes to the on-time performance of Knoxville Airport, 76% of flights meet their scheduled arrival time.

  • To get to Knoxville Airport from central Knoxville, it'll take about 25 minutes if you're planning to drive. This depends on traffic, however. It's approximately 24 kilometres from the airport to the city centre.

  • Planning to catch public transport? Expect a journey time of around 50 minutes.

  • Get your travels off to a relaxed start by staying near TYS. Whether you have an early flight from Knoxville Airport to Austin-Bergstrom Airport or want to avoid feeling rushed, these hotels are perfect:

Arriving at Austin-Bergstrom Airport (AUS)

When to fly to Austin-Bergstrom Airport (AUS)

  • It's time to pick your dates for your flight from Knoxville Airport to Austin-Bergstrom Airport. July is the most popular month to visit Austin. If you want a quieter vibe, go in March.

  • Before locking in your flight from Knoxville Airport to Austin-Bergstrom Airport, think about the type of weather you enjoy. August is the warmest month in Austin, with the temperature ranging from 23ºC (73ºF) to 41ºC (106ºF).

  • If you like cooler conditions, look for a cheap ticket from TYS to AUS in January. Temperatures average between 3ºC (37ºF) and 19ºC (66ºF) then.

Explore more of the United States

  • Austin has its own special appeal, but there are so many other corners of the United States just waiting to be discovered. Around 241 kilometres east of Austin, a trip to Houston will keep you on the go. Start with leading sights like The Museum of Fine Arts, Houston, Beck Building, Houston Museum of Natural Science and The Menil Collection.

  • San Antonio is another standout destination in the United States and is around 121 kilometres south-west of Austin. No journey is complete without experiencing San Antonio River Walk, San Antonio River walk and Alamo Plaza.

Plan the rest of your trip from Knoxville to Austin

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.