Cheap Flights from Austin, TX to Knoxville, TN from $50

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On Cheapflightsplus.com you will find 3 direct and 437 connecting flights from Austin to Knoxville. You can compare airfare deals from 5 airlines and multiple travel sites from $50, book and save on cheap plane tickets and last minute offers. Also check out AUS-TYS flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Austin to Knoxville Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $50 (one-way), $86 (round-trip).

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Best Flights from Austin to Knoxville Today

Take a look at the list of non stop flights and flights with layovers from Austin to Knoxville with the lowest price of $50. The fastest direct flight takes 2h 16m and the fastest connecting – 4h 19m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $50 Find flight	13:28 Austin Austin-Bergstrom Intl	16:45 Knoxville Mc Ghee Tyson	2h 17m	Allegiant Air	G41431
from $73 Find flight	09:05 Austin Austin-Bergstrom Intl	12:22 Knoxville Mc Ghee Tyson	2h 17m	Allegiant Air	G43032
from $80 Find flight	08:28 Austin Austin-Bergstrom Intl	10:24+1 день Knoxville Mc Ghee Tyson	24h 56m layover 20h 39m - Sarasota	Allegiant Air	G43007 G43002
from $93 Find flight	19:28 Austin Austin-Bergstrom Intl	15:12+1 день Knoxville Mc Ghee Tyson	18h 44m layover 14h 37m - Sanford	Allegiant Air	G42825 G41411

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 15, 2025

Flight Schedule Austin (Texas) to Knoxville (Tennessee)

Full flight schedule will help you in detecting at what time planes fly from Austin to Knoxville. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

Departure	Flight Details	Flight Duration	Price
06:00 — 16:29	06:00 — 07:30 F91815 Frontier Airlines Austin — Denver 4h 20m stop 11:41 — 16:35 F92374 Frontier Airlines Denver — Knoxville	9h 29m including layover	Find flight from$120
08:28 — 10:24 +1 day	08:28 — 11:57 G43007 Allegiant Air Austin — Sarasota 20h 39m stop 11:35 — 13:23 G43002 Allegiant Air Sarasota — Knoxville	24h 56m including layover	Find flight from$80
08:28 — 13:23 +1 day	08:28 — 11:57 G41367 Allegiant Air Austin — Sarasota 23h 38m stop 11:35 — 13:23 G43001 Allegiant Air Sarasota — Knoxville	27h 55m including layover	Find flight from$85
08:37 — 10:55 +1 day	08:37 — 12:03 G42984 Allegiant Air Austin — Sarasota 21h 4m stop 09:07 — 10:55 G41378 Allegiant Air Sarasota — Knoxville	25h 18m including layover	Find flight from$98
08:37 — 13:23 +1 day	08:37 — 12:03 G43006 Allegiant Air Austin — Sarasota 23h 32m stop 11:35 — 13:23 G43001 Allegiant Air Sarasota — Knoxville	27h 46m including layover	Find flight from$104
08:48 — 12:04	08:48 — 12:04 G43033 Allegiant Air Austin — Knoxville	2h 16m	Find flight from$78
09:05 — 12:22	09:05 — 12:22 G43032 Allegiant Air Austin — Knoxville	2h 17m	Find flight from$73
09:50 — 11:18 +1 day	09:50 — 13:44 NK512 Spirit Airlines Austin — Miami 19h 31m stop 09:15 — 11:18 G4531 Allegiant Air Miami — Knoxville	24h 28m including layover	Find flight from$118
13:28 — 16:45	13:28 — 16:45 G41431 Allegiant Air Austin — Knoxville	2h 17m	Find flight from$50
19:28 — 15:12 +1 day	19:28 — 23:00 G42825 Allegiant Air Austin — Sanford 14h 37m stop 13:37 — 15:12 G41411 Allegiant Air Sanford — Knoxville	18h 44m including layover	Find flight from$93
19:28 — 19:11 +1 day	20:01 — 23:33 G42825 Allegiant Air Austin — Sanford 18h 36m stop 19:45 — 21:20 G42962 Allegiant Air Sanford — Knoxville	22h 43m including layover	Find flight from$93
20:01 — 10:11 +1 day	20:01 — 23:33 G42825 Allegiant Air Austin — Orlando 8h 54m stop 08:27 — 10:11 G43050 Allegiant Air Orlando — Knoxville	13h 10m including layover	Find flight from$102
20:01 — 10:11 +1 day	20:01 — 23:33 G41298 Allegiant Air Austin — Orlando 8h 54m stop 08:27 — 10:11 G43064 Allegiant Air Orlando — Knoxville	13h 10m including layover	Find flight from$113
20:01 — 21:20 +1 day	20:01 — 23:33 G41298 Allegiant Air Austin — Sanford 20h 12m stop 19:45 — 21:20 G42885 Allegiant Air Sanford — Knoxville	24h 19m including layover	Find flight from$113
20:05 — 21:21 +1 day	20:05 — 23:38 G42825 Allegiant Air Austin — Sanford 20h 8m stop 19:46 — 21:21 G42844 Allegiant Air Sanford — Knoxville	24h 16m including layover	Find flight from$116

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on September 15, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Austin to Knoxville depends on and how to choose the most interesting flight option for you.

Distance between Austin and Knoxville is 1418 miles. Time difference between the cities is 1h. Airplanes depart 05:00 to 20:57 from 3 Austin airports and arrive 05:00 to 20:57 to 1 Knoxville airport. Average flight time is 2h 17m.

The fastest flight 2h 16m
Average flight time 2h 17m
The earliest flight 05:00
The latest flight 20:57
Distance 882 ml

The cheapest months to travel to Knoxville are august (from 50 $), july (from 73 $), june (from 78 $).

The most expensive months are october (from 127 $), september (from 118 $), may (from 102 $).

What is the lowest airfare Austin to Knoxville?

The cheapest plane ticket found by our users is $50. This airfare is for economy class on one-way G41431 flight by Allegiant Air for August 15, 2025 which leaves Austin-Bergstrom Intl in Austin at 13:28 am and arrives at Knoxville Mc Ghee Tyson at 16:45.

Economy class

$50

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Business class

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First class

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Popular Airlines on the Route

The flight Austin — Knoxville is served by 5 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 2 departures per week at the price of from $ 1175 . And the most expensive tickets are offered by Alaska Airlines airline - from $ 1175.

Direct flights

There are 3 nonstop flights on the route. The fastest direct flight is G43033 by Allegiant Air takes 2h 16m and the cheapest is G41431 by Allegiant Air for $50.

G4 - Allegiant Air

from $50

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Connecting Flights

There are 437 flights with layovers on the route. The fastest connecting flight is UA1646 by United Airlines takes 4h 19m and the cheapest is G41431 by Allegiant Air for $80.

AS - Alaska Airlines

from $1175

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F9 - Frontier Airlines

from $120

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UA - United Airlines

from $136

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G4 - Allegiant Air

from $80

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NK - Spirit Airlines

from $118

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Airports

You can fly from Austin to Knoxville from 3 airports (Austin-Bergstrom Intl, Austin, Camp Maybry AHP).

Austin airports

Austin-Bergstrom Intl-AUS

from $50
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Austin-ASQ

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Camp Maybry AHP-MMR

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Knoxville airports

Mc Ghee Tyson-TYS

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Airplanes

There are flights to Knoxville from Austin by 5 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Austin

You may also consider searching for discounted plane tickets to some other popular places from Austin within United States.

Austin — Las Vegas

from $66

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Austin — New York

from $78

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Austin — Denver

from $67

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Austin — Boston

from $62

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Austin — Orlando

from $73

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Austin — Seattle

from $66

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Austin — Miami

from $57

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Austin — Dallas

from $54

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Austin — Atlanta

from $57

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Austin — Los Angeles

from $68

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Top International Destinations from Austin

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

Austin — London

from $56

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Austin — Cancun

from $54

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Austin — Mexico City

from $64

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Austin — Paris

from $56

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Austin — Toronto

from $67

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Austin — Madrid

from $72

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Austin — Puerto Vallarta

from $61

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Austin — Montreal

from $76

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Austin — Dublin

from $79

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Austin — San Juan

from $62

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How to book a plane ticket yourself?

Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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