Cheap Flights from Knoxville, TN to Austin, TX from $37

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On Cheapflightsplus.com you will find 2 direct and 220 connecting flights from Knoxville to Austin. You can compare airfare deals from 2 airlines and multiple travel sites from $37, book and save on cheap plane tickets and last minute offers. Also check out TYS-AUS flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Knoxville to Austin 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: $37 (one-way), $63 (round-trip).

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Best Flights from Knoxville to Austin Today

Take a look at the list of non stop flights and flights with layovers from Knoxville to Austin with the lowest price of $37. The fastest direct flight takes 2h 20m and the fastest connecting – 4h 21m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $37 Find flight	06:55 Knoxville Mc Ghee Tyson	08:15 Austin Austin-Bergstrom Intl	2h 20m	Allegiant Air	G41410
from $54 Find flight	11:06 Knoxville Mc Ghee Tyson	12:38 Austin Austin-Bergstrom Intl	2h 32m	Allegiant Air	G43061
from $90 Find flight	15:01 Knoxville Mc Ghee Tyson	19:11 Austin Austin-Bergstrom Intl	5h 10m layover 1h 3m - Sanford	Allegiant Air	G41396 G41242
from $90 Find flight	18:15 Knoxville Mc Ghee Tyson	19:15+1 день Austin Austin-Bergstrom Intl	26h 0m layover 21h 47m - Sanford	Allegiant Air	G41418 G42917
from $98 Find flight	11:01 Knoxville Mc Ghee Tyson	11:29+1 день Austin Austin-Bergstrom Intl	25h 28m layover 20h 21m - Minneapolis	Allegiant Air	G41414 SY1685
from $102 Find flight	11:23 Knoxville Mc Ghee Tyson	08:55+1 день Austin Austin-Bergstrom Intl	22h 32m layover 17h 37m - Miami	Allegiant Air	G4502 NK517
from $103 Find flight	06:00 Knoxville Mc Ghee Tyson	20:02 Austin Austin-Bergstrom Intl	15h 2m layover 10h 28m - Orlando	Allegiant Air	G43063 NK1618
from $108 Find flight	14:28 Knoxville Mc Ghee Tyson	19:14+1 день Austin Austin-Bergstrom Intl	29h 46m layover 22h 43m - Las Vegas	Allegiant Air	G444 NK2627
from $109 Find flight	09:35 Knoxville Mc Ghee Tyson	15:22 Austin Austin-Bergstrom Intl	6h 47m layover 3h 21m - Houston	United Airlines	UA4841 UA2483
from $109 Find flight	07:00 Knoxville Mc Ghee Tyson	13:09 Austin Austin-Bergstrom Intl	7h 9m layover 3h 43m - Houston	United Airlines	UA4913 UA6180
from $121 Find flight	07:10 Knoxville Mc Ghee Tyson	07:57+1 день Austin Austin-Bergstrom Intl	25h 47m layover 19h 55m - Newark	Allegiant Air	G43038 NK2951
from $123 Find flight	15:01 Knoxville Mc Ghee Tyson	19:11 Austin Austin-Bergstrom Intl	5h 10m layover 1h 3m - Sanford	Allegiant Air	G41419 G41307
from $111 Find flight	20:54 Knoxville Mc Ghee Tyson	18:48+1 день Austin Austin-Bergstrom Intl	22h 54m layover 10h 23m - Miami 5h 26m - Covington	Allegiant Air	G42154 G4373 G4416
from $117 Find flight	07:00 Knoxville Mc Ghee Tyson	18:48+1 день Austin Austin-Bergstrom Intl	36h 48m layover 11h 34m - Clearwater 18h 51m - Covington	Allegiant Air	G43048 G4419 G4416
from $119 Find flight	08:00 Knoxville Mc Ghee Tyson	07:44+1 день Austin Austin-Bergstrom Intl	24h 44m layover 7h 14m - Fort Walton Beach 11h 11m - Grand Rapids	Allegiant Air	G41398 G43066 G4561
from $119 Find flight	08:00 Knoxville Mc Ghee Tyson	18:48+1 день Austin Austin-Bergstrom Intl	35h 48m layover 22h 54m - Fort Walton Beach 7h 9m - Covington	Allegiant Air	G41398 G43069 G4416

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on June 25, 2025

Flight Schedule Knoxville (Tennessee) to Austin (Texas)

Full flight schedule will help you in detecting at what time planes fly from Knoxville to Austin. 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
06:55 — 08:15	06:55 — 08:15 G41410 Allegiant Air Knoxville — Austin	2h 20m	Find flight from$37
11:06 — 12:38	11:06 — 12:38 G43061 Allegiant Air Knoxville — Austin	2h 32m	Find flight from$54
06:00 — 20:02	06:00 — 07:37 G43063 Allegiant Air Knoxville — Orlando 10h 28m stop 18:05 — 20:02 NK1618 Spirit Airlines Orlando — Austin	15h 2m including layover	Find flight from$103
07:00 — 13:09	07:00 — 08:24 UA4913 United Airlines Knoxville — Houston 3h 43m stop 12:07 — 13:09 UA6180 United Airlines Houston — Austin	7h 9m including layover	Find flight from$109
09:35 — 15:22	09:35 — 10:59 UA4841 United Airlines Knoxville — Houston 3h 21m stop 14:20 — 15:22 UA2483 United Airlines Houston — Austin	6h 47m including layover	Find flight from$109
11:01 — 11:29 +1 day	11:01 — 12:19 G41414 Allegiant Air Knoxville — Minneapolis 20h 21m stop 08:40 — 11:29 SY1685 Sun Country Airlines Minneapolis — Austin	25h 28m including layover	Find flight from$98
12:00 — 15:21	12:00 — 13:27 UA4302 United Airlines Knoxville — Houston 51m stop 14:20 — 15:22 UA2483 United Airlines Houston — Austin	4h 21m including layover	Find flight from$141
14:28 — 19:14 +1 day	14:28 — 15:35 G444 Allegiant Air Knoxville — Las Vegas 22h 43m stop 14:18 — 19:14 NK2627 Spirit Airlines Las Vegas — Austin	29h 46m including layover	Find flight from$108
14:57 — 19:15	14:57 — 16:28 G41423 Allegiant Air Knoxville — Sanford 1h 6m stop 17:34 — 19:15 G42917 Allegiant Air Sanford — Austin	5h 18m including layover	Find flight from$137
15:01 — 19:11	15:01 — 16:32 G41396 Allegiant Air Knoxville — Sanford 1h 3m stop 17:35 — 19:11 G41242 Allegiant Air Sanford — Austin	5h 10m including layover	Find flight from$90
15:01 — 19:11	15:01 — 16:32 G41419 Allegiant Air Knoxville — Sanford 1h 3m stop 17:35 — 19:11 G41307 Allegiant Air Sanford — Austin	5h 10m including layover	Find flight from$123
16:31 — 08:55 +1 day	16:31 — 18:35 G4509 Allegiant Air Knoxville — Miami 12h 25m stop 07:00 — 08:55 NK517 Spirit Airlines Miami — Austin	17h 24m including layover	Find flight from$153
18:15 — 19:15 +1 day	18:15 — 19:47 G41418 Allegiant Air Knoxville — Sanford 21h 47m stop 17:34 — 19:15 G42917 Allegiant Air Sanford — Austin	26h including layover	Find flight from$90
18:19 — 19:11 +1 day	18:19 — 19:52 G43027 Allegiant Air Knoxville — Sanford 21h 43m stop 17:35 — 19:11 G41307 Allegiant Air Sanford — Austin	25h 52m including layover	Find flight from$156
07:00 — 18:48 +1 day	07:00 — 08:41 G43048 Allegiant Air Knoxville — Clearwater 11h 34m stop 20:15 — 22:28 G4419 Allegiant Air Clearwater — Covington 18h 51m stop 17:19 — 18:48 G4416 Allegiant Air Covington — Austin	36h 48m including layover	Find flight from$117
08:00 — 07:44 +1 day	08:00 — 08:21 G41398 Allegiant Air Knoxville — Fort Walton Beach 7h 14m stop 15:35 — 18:49 G43066 Allegiant Air Fort Walton Beach — Grand Rapids 11h 11m stop 07:30 — 09:36 G4561 Allegiant Air Grand Rapids — Austin	24h 44m including layover	Find flight from$119
08:00 — 18:48 +1 day	08:00 — 08:21 G41398 Allegiant Air Knoxville — Fort Walton Beach 22h 54m stop 07:15 — 10:10 G43069 Allegiant Air Fort Walton Beach — Covington 7h 9m stop 17:19 — 18:48 G4416 Allegiant Air Covington — Austin	35h 48m including layover	Find flight from$119
09:07 — 10:58 +1 day	09:07 — 11:06 G42117 Allegiant Air Knoxville — Miami 11h 21m stop 22:27 — 00:54 NK777 Spirit Airlines Miami — Las Vegas 5h 21m stop 06:15 — 10:58 G431 Allegiant Air Las Vegas — Austin	26h 51m including layover	Find flight from$157
12:19 — 10:57 +1 day	12:19 — 14:00 G41404 Allegiant Air Knoxville — Clearwater 5h 19m stop 19:19 — 20:56 G4220 Allegiant Air Clearwater — Fletcher 12h 34m stop 09:30 — 10:57 G4224 Allegiant Air Fletcher — Austin	23h 38m including layover	Find flight from$127
16:38 — 10:58 +1 day	16:38 — 18:37 G42106 Allegiant Air Knoxville — Miami 3h 50m stop 22:27 — 00:54 NK777 Spirit Airlines Miami — Las Vegas 5h 21m stop 06:15 — 10:58 G431 Allegiant Air Las Vegas — Austin	19h 20m including layover	Find flight from$151
20:54 — 18:48 +1 day	20:54 — 22:55 G42154 Allegiant Air Knoxville — Miami 10h 23m stop 09:18 — 11:53 G4373 Allegiant Air Miami — Covington 5h 26m stop 17:19 — 18:48 G4416 Allegiant Air Covington — Austin	22h 54m including layover	Find flight from$111
20:54 — 18:48 +1 day	20:54 — 22:55 G4533 Allegiant Air Knoxville — Miami 10h 23m stop 09:18 — 11:53 G4369 Allegiant Air Miami — Covington 5h 26m stop 17:19 — 18:48 G4416 Allegiant Air Covington — Austin	22h 54m including layover	Find flight from$149

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

*Departure and arrival times - local. Updated on June 25, 2025

Flight Information

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

Distance between Knoxville and Austin is 1418 miles. Time difference between the cities is 1h. Airplanes depart 05:45 to 21:30 from 1 Knoxville airport and arrive 05:45 to 21:30 to 3 Austin airports. Average flight time is 2h 26m.

The fastest flight 2h 20m
Average flight time 2h 26m
The earliest flight 05:45
The latest flight 21:30
Distance 882 ml

The cheapest months to travel to Austin are july (from 50 $), august (from 54 $), june (from 58 $).

The most expensive months are september (from 189 $), october (from 136 $), may (from 68 $).

What is the lowest airfare Knoxville to Austin?

The cheapest plane ticket found by our users is $37. This airfare is for economy class on one-way G41410 flight by Allegiant Air for July 4, 2025 which leaves Mc Ghee Tyson in Knoxville at 06:55 am and arrives at Austin Austin-Bergstrom Intl at 08:15.

Economy class

$37

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Business class

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First class

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Popular Airlines on the Route

The flight Knoxville — Austin is served by 2 regular airlines and 1 low-cost airline. Most of the flights on this route are operated by United Airlines - 80 departures per week at the price of from $ 109 . And the most expensive tickets are offered by United Airlines airline - from $ 453.

Direct flights

There are 2 nonstop flights on the route. The fastest direct flight is G41410 by Allegiant Air takes 2h 20m and the cheapest is G41410 by Allegiant Air for $37.

G4 - Allegiant Air

from $37

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Connecting Flights

There are 220 flights with layovers on the route. The fastest connecting flight is UA4302 by United Airlines takes 4h 21m and the cheapest is G41410 by Allegiant Air for $90.

UA - United Airlines

from $109

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G4 - Allegiant Air

from $90

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Airports

You can fly from Knoxville to Austin from 1 airports (Mc Ghee Tyson).

Knoxville airports

Mc Ghee Tyson-TYS

from $37
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Austin airports

Austin-Bergstrom Intl-AUS

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Austin-ASQ

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Camp Maybry AHP-MMR

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Airplanes

There are flights to Austin from Knoxville by 2 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Knoxville

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

Knoxville — Orlando

from $73

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Knoxville — Las Vegas

from $74

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Knoxville — Chicago

from $76

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Knoxville — Denver

from $74

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Knoxville — Miami

from $66

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Knoxville — Boston

from $69

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Knoxville — Houston

from $54

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Knoxville — New Orleans

from $56

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Knoxville — Tampa

from $80

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Knoxville — Austin

from $54

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Top International Destinations from Knoxville

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.

Knoxville — Cancun

from $69

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Knoxville — Panama City

from $61

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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.
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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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