Cheap Flights from Austin-Bergstrom to Knoxville from $145

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Flight deals from Austin-Bergstrom to Knoxville

Looking for a cheap last-minute deal or the best return flight from Austin-Bergstrom Airport to Knoxville Airport? If you want to travel next month, return fares start from $150. Find the lowest prices on one-way and return tickets right here.

Knoxville.$145 per passenger.Departing Mon, 17 Aug, returning Fri, 28 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 17 Aug, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Fri, 28 Aug, arriving in Austin-Bergstrom.Price includes taxes and charges.From $145, select.

Knoxville.$150 per passenger.Departing Fri, 11 Sep, returning Mon, 14 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 11 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Sep, arriving in Austin-Bergstrom.Price includes taxes and charges.From $150, select.

Knoxville.$155 per passenger.Departing Fri, 28 Aug, returning Mon, 14 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 28 Aug, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Sep, arriving in Austin-Bergstrom.Price includes taxes and charges.From $155, select.

Knoxville.$163 per passenger.Departing Mon, 14 Sep, returning Thu, 1 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 14 Sep, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 1 Oct, arriving in Austin-Bergstrom.Price includes taxes and charges.From $163, select.

Knoxville.$167 per passenger.Departing Sun, 4 Oct, returning Thu, 8 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Sun, 4 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Thu, 8 Oct, arriving in Austin-Bergstrom.Price includes taxes and charges.From $167, select.

Knoxville.$198 per passenger.Departing Sun, 18 Oct, returning Mon, 2 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Sun, 18 Oct, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 2 Nov, arriving in Austin-Bergstrom.Price includes taxes and charges.From $198, select.

Knoxville.$213 per passenger.Departing Mon, 2 Nov, returning Mon, 9 Nov.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 2 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 9 Nov, arriving in Austin-Bergstrom.Price includes taxes and charges.From $213, select.

Knoxville.$336 per passenger.Departing Fri, 11 Dec, returning Wed, 30 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Fri, 11 Dec, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Wed, 30 Dec, arriving in Austin-Bergstrom.Price includes taxes and charges.From $336, select.

Knoxville.$351 per passenger.Departing Mon, 30 Nov, returning Mon, 14 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Austin-Bergstrom on Mon, 30 Nov, arriving in Knoxville.Inbound direct flight with Allegiant Air departs from Knoxville on Mon, 14 Dec, arriving in Austin-Bergstrom.Price includes taxes and charges.From $351, select.

Knoxville.$565 per passenger.Departing Fri, 19 Feb, returning Mon, 22 Feb.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Austin-Bergstrom on Fri, 19 Feb, arriving in Knoxville.Inbound indirect flight with Southwest Airlines, departs from Knoxville on Mon, 22 Feb, arriving in Austin-Bergstrom.Price includes taxes and charges.From $565, select.

Knoxville.$565 per passenger.Departing Thu, 21 Jan, returning Sun, 24 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Austin-Bergstrom on Thu, 21 Jan, arriving in Knoxville.Inbound indirect flight with Southwest Airlines, departs from Knoxville on Sun, 24 Jan, arriving in Austin-Bergstrom.Price includes taxes and charges.From $565, select.

Knoxville.$652 per passenger.Departing Fri, 12 Mar, returning Tue, 16 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Fri, 12 Mar, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Tue, 16 Mar, arriving in Austin-Bergstrom.Price includes taxes and charges.From $652, select.

Knoxville.$668 per passenger.Departing Thu, 29 Apr, returning Sun, 2 May.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Thu, 29 Apr, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Sun, 2 May, arriving in Austin-Bergstrom.Price includes taxes and charges.From $668, select.

Knoxville.$669 per passenger.Departing Sat, 5 Jun, returning Sat, 12 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Austin-Bergstrom on Sat, 5 Jun, arriving in Knoxville.Inbound indirect flight with Delta, departs from Knoxville on Sat, 12 Jun, arriving in Austin-Bergstrom.Price includes taxes and charges.From $669, select.

Knoxville.$1,253 per passenger.Departing Thu, 25 Feb, returning Mon, 1 Mar.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Austin-Bergstrom on Thu, 25 Feb, arriving in Knoxville.Inbound indirect flight with Southwest Airlines, departs from Knoxville on Mon, 1 Mar, arriving in Austin-Bergstrom.Price includes taxes and charges.From $1,253, select.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Austin-Bergstrom to Knoxville flights are currently cheapest in August.

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Direct flights from Austin-Bergstrom to Knoxville

Austin-Bergstrom to Knoxville: Alternative routes

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

Knoxville

18km from central Knoxville

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from $145

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Austin to Knoxville: Flight information

The things to know before you go.

Cheapest flight found	$145
Cheapest month to fly	August
Average flight time	2 hrs, 18 mins
Most popular airline	Allegiant Air
Average flights per week	3

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

How much are return flights from Austin-Bergstrom to Knoxville?

The best price we found for a return flight from Austin-Bergstrom to Knoxville is $145. 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.

How long does it take to fly from Austin-Bergstrom to Knoxville?

2 hours and 18 minutes is the average flight time from Austin-Bergstrom to Knoxville.

Which airlines fly direct from Austin-Bergstrom to Knoxville?

Allegiant Air, Southwest Airlines and Delta fly direct from Austin-Bergstrom to Knoxville.

How many flights are there a week from Austin-Bergstrom to Knoxville?

As of August 2026, there are 3 flights per week flying from Austin-Bergstrom to Knoxville.

When is the cheapest time to fly from Austin-Bergstrom to Knoxville?

The cheapest month to fly from Austin-Bergstrom to Knoxville is usually August.

Which upcoming date is cheapest to fly from Austin-Bergstrom Airport to Knoxville Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Austin-Bergstrom Airport to Knoxville Airport on Monday, 17 August 2026.

Can I get a direct flight from Austin-Bergstrom Airport to Knoxville Airport?

Yes – the average flight time is 2 hours and 18 minutes.

How can I find the best flight deal to Knoxville?

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 Knoxville 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.

When is the best time to book flights to Knoxville?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Knoxville is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Austin-Bergstrom Airport to Knoxville with?

Currently, Allegiant Air offers the cheapest flight tickets to Knoxville.

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

Book a direct flight from Austin-Bergstrom Airport to Knoxville Airport and you'll be travelling for an average of 2 hours 20 minutes.
Your AUS to TYS flight won't wait if you're late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.
Be prepared for bigger queues during popular months like July. Arriving up to four hours in advance for international flights and two hours for domestic departures is a smart move.
You can travel nonstop to Knoxville, the United States. Take off with one of these airlines offering direct flights from Austin-Bergstrom Airport to Knoxville Airport:
The airline with the highest passenger demand on this route is Allegiant Air.
Allegiant Air is the most punctual carrier offering AUS to TYS flights.
We make it a breeze to book a flight with a stopover. To see your options for tickets from Austin-Bergstrom Airport to Knoxville Airport, deselect 'Direct flights only.' Then, pick a flight offering a stop long enough to tour the city of your choice. Popular stopovers between AUS and TYS include:
- Atlanta Hartsfield-Jackson Airport
- Dallas Fort Worth International Airport
- Houston George Bush Intercntl. Airport

Handy information about Austin-Bergstrom Airport (AUS)

The address for AUS is 3600 Presidential Blvd.
Of the flights that depart from Austin-Bergstrom Airport, 77% land on time at their destination.
To reach Austin-Bergstrom Airport from central Austin, it'll take around 20 minutes if you're travelling by car. This depends on traffic though. It's approximately 16 kilometres from the airport to the city centre.
Expect a journey time of about 45 minutes on public transport.
Catching an early flight from Austin-Bergstrom Airport to Knoxville Airport? Avoid the hassle of rushing to the airport (and sneak in some extra precious sleep) by choosing one of these stays near AUS:

Arriving at Knoxville Airport (TYS)

If you're arriving on a late Austin-Bergstrom Airport to Knoxville Airport flight, few things top the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and sleeping not long after at one of these accommodation options near TYS:
Travel at your own speed with a Knoxville Airport rental car. Pick up your wheels from Budget, Alamo or Avis and experience more of Knoxville and beyond.
For the best deal, reserve your vehicle from Knoxville Airport about three weeks ahead.

When to fly to Knoxville Airport (TYS)

It's time to pick your trip dates for your flight from Austin-Bergstrom Airport to Knoxville Airport. October is the busiest month to visit Knoxville. If you'd like a more relaxed vibe, go in March.
Before locking in your flight from Austin-Bergstrom Airport to Knoxville Airport, think about the type of weather you enjoy. July is the warmest month in Knoxville, with the temperature ranging from 17ºC to 32ºC.
January has average temperatures of between -6ºC and 11ºC. Look for cheap tickets from AUS to TYS sometime then if you like cooler conditions.

Explore more of the United States

You've seen Knoxville, now it's time to explore other parts of the United States. Journey about 451 kilometres north to Columbus to check off its top sights. From Franklin Park Conservatory and Botanical Gardens to Whetstone Park / Park of Roses and Ohio Theatre, there's plenty to keep you busy.
Indianapolis is another well-known destination in the United States and is around 467 kilometres north-west of Knoxville. No trip is complete without experiencing Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis.