Allegiant AirDepart09:18
Fri, Nov 13AUS → TYS
2h 21m · Direct
$110one way, per person
View deal
- Cheapest fare
- $110
- Cheapest month
- November
- Direct flights
- Yes
- Flight time
- 2h 21m
Allegiant Air · Fri, Nov 13
from $110
Allegiant Air
1,430 km
Get a price alert
We'll email you when Austin → Knoxville drops to your price. It's free, and you can stop any time.
Today's cheapest fare is $110. We'll send one email to confirm. See our privacy policy.
Cheapest month to fly from Austin to Knoxville
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
Allegiant Air
Frontier AirlinesDepart13:55
Sat, Nov 14AUS → TYS
6h 00m · 2 stops
$232one way, per person
View deal
Plan the rest of your trip to Knoxville
Where to stay, what to do and getting around, from our travel partners.
About flights from Austin to Knoxville
Austin (AUS) and Knoxville (TYS) are about 1,430 km apart. Direct flights take around 2h 21m, and recent direct fares were with Allegiant Air. Over the next few months, one-way fares start from $110, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from Austin to Knoxville?
The cheapest one-way fare we've seen recently is $110 with Allegiant Air, departing Friday, November 13, 2026.
What is the cheapest month to fly from Austin to Knoxville?
November 2026 currently has the lowest fares, from $110 one way.
Are there direct flights from Austin to Knoxville?
Yes. Recent direct fares were with Allegiant Air.
How long is the flight from Austin to Knoxville?
A direct flight takes about 2h 21m. Austin and Knoxville are around 1,430 km apart.
Which airlines fly from Austin to Knoxville?
Recent fares on this route were with Allegiant Air and Frontier Airlines.
More cheap flights from Austin
- Austin to New Yorkfrom $136
- Austin to Denverfrom $80
- Austin to Tampafrom $74
- Austin to Fort Lauderdalefrom $135
- Austin to Las Vegasfrom $60
- Austin to Chicagofrom $141
- Austin to Mexico Cityfrom $89
- Austin to Los Angelesfrom $177
- Austin to Cancunfrom $229
- Austin to Atlantafrom $180
- Austin to Washingtonfrom $138
- Austin to Phoenixfrom $171