TYS - AUS

$38 Find Cheap Flights from Knoxville to Austin - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Austin departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Everything you should know

Cheapest round-trip
$78
Typical prices: $203-$338
Allegiant Air
Fri 8/14Mon 8/17
TYS - AUS • Non-stop
Cheapest one-way
$38
Typical prices: $83-$208
Allegiant Air
Fri 8/14
TYS - AUS • Non-stop
Nonstop flights
Mon, Thu, Fri, Sat, Sun
You can fly direct with Allegiant Air, Southwest and others. Average duration is 2h 26m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 9 weeks in advance save around 56% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Knoxville to Austin (TYS-AUS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Austin that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Austin

Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
6:30 am - 8:06 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
8:56 am - 12:17 pm
AUS
-
TYS
2h 21mnonstop
$78Allegiant Air
Fri, Aug 14 - Mon, Aug 17
Allegiant Air Logo
6:30 am - 8:06 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
8:56 am - 12:17 pm
AUS
-
TYS
2h 21mnonstop
$83Allegiant Air
Mon, Aug 31 - Mon, Sep 7
Multiple Airlines Logo
8:30 am - 4:39 pm
TYS
-
AUS
33h 09m
2 stops
Multiple Airlines Logo
9:13 am - 12:27 pm
AUS
-
TYS
2h 14mnonstop
$189Multiple Airlines
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
4:18 pm - 10:03 am
TYS
-
AUS
18h 45m
1 stop
Multiple Airlines Logo
10:13 am - 1:27 pm
AUS
-
TYS
2h 14mnonstop
$199Multiple Airlines
Wed, Sep 23 - Mon, Sep 28
American Airlines Logo
7:18 pm - 11:16 pm
TYS
-
AUS
4h 58m
1 stop
American Airlines Logo
8:00 am - 1:53 pm
AUS
-
TYS
4h 53m
1 stop
$289American Airlines
Thu, Nov 12 - Mon, Nov 16
Delta Logo
12:34 pm - 5:36 pm
TYS
-
AUS
6h 02m
1 stop
Delta Logo
6:41 pm - 11:57 pm
AUS
-
TYS
4h 16m
1 stop
$289Delta
Wed, Sep 23 - Mon, Sep 28
Southwest Logo
8:05 am - 3:10 pm
TYS
-
AUS
8h 05m
1 stop
Southwest Logo
6:20 am - 12:20 pm
AUS
-
TYS
5h 00m
2 stops
$294Southwest
Wed, Sep 23 - Mon, Sep 28
Southwest Logo
8:05 am - 4:20 pm
TYS
-
AUS
9h 15m
2 stops
Southwest Logo
6:20 am - 12:20 pm
AUS
-
TYS
5h 00m
2 stops
$299Southwest
Fri, Sep 4 - Tue, Sep 8
American Airlines Logo
5:33 pm - 10:35 pm
TYS
-
AUS
6h 02m
1 stop
American Airlines Logo
8:45 am - 3:57 pm
AUS
-
TYS
6h 12m
1 stop
$318American Airlines
Fri, Sep 4 - Tue, Sep 8
Delta Logo
10:28 am - 1:51 pm
TYS
-
AUS
4h 23m
1 stop
Delta Logo
6:25 am - 12:51 pm
AUS
-
TYS
5h 26m
1 stop
$318Delta
Booking Insights

KAYAK's insights & trends for Knoxville to Austin flights

Get data-powered insights and trends into flights from Knoxville to Austin to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Knoxville to Austin?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Austin departing in August.

Flight prices are below average for this route right now.

Flights to Austin from Knoxville usually cost between $203 and $338 in August.
The lowest price found in the past 5 days was $78 on Allegiant Air (Aug 14-Aug 17).

What’s the cheapest day of the week to fly from Knoxville to Austin?

The average price of all round-trip flights from Knoxville to Austin clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Austin on a Tuesday and more expensive on a Saturday. On your return trip to Knoxville, you should consider flying back on a Monday, and avoid Wednesdays for better deals.

What is the cheapest month to fly from Knoxville to Austin?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Knoxville to Austin, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Knoxville to Austin is June, where tickets cost $197 (return) on average. On the other hand, the most expensive months are February and March, where the average cost of round-trip tickets is $384 and $373 respectively.

How far in advance should I book a flight from Knoxville to Austin?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Knoxville to Austin, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Knoxville to Austin, you should book around 9 weeks before departure, which saves you about 56% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

May

Cheapest flight

$38
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 30% lower on average.
Flight from Knoxville to Austin

When to book flights from Knoxville to Austin

Are your dates flexible? Find out the best times to travel from Knoxville to Austin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to Austin

  • What seat selection options are available on American Airlines flights from Knoxville to Austin?

    Main Cabin seats are standard economy seats on American Airlines flights from Knoxville to Austin that come with your ticket purchase and include basic amenities like a reclining seat, overhead bin storage, and in-flight entertainment. Main Cabin Extra seats are economy seats with extra legroom and priority boarding. Preferred seats are standard Main Cabin seats that are located in more desirable areas of the plane.

  • How do I go from Austin Bergstrom Airport (AUS) to the city center?

    Capital Metro operates a bus from Austin Airport's Lower Level to Downtown Austin. This is an affordable option and can take around 30 minutes depending on traffic and route. Services like Uber and Lyft are available to transport passengers from the airport to the city center. This may be a more convenient option, but can be more expensive than the bus. Several car rental companies operate at AUS, and travelers can rent a car to drive to the city center at their own pace.

  • What is the luggage allowance on United Airlines flights from Knoxville to Austin?

    The luggage allowance on United Airlines flights from Knoxville to Austin can vary depending on the ticket fare. The maximum exterior dimension of standard checked baggage is 62 inches and the maximum weight can range from 50 lbs to 70 lbs depending on the fare class. Additional checked baggage fees apply for any bags that exceed the size or weight limit, or for any additional bags beyond the allowed number.

  • What services does Delta offer Economy class passengers on flights from Knoxville to Austin?

    Passengers can stream movies, TV shows, and other entertainment options directly to their personal devices using Delta's onboard Wi-Fi network on flights from Knoxville to Austin. Economy passengers can also enjoy complimentary snacks and non-alcoholic beverages during their flight, and the airline offers a pay-per-view entertainment option if you wish to enhance their in-flight entertainment experience.

  • How many flights are there between Knoxville and Austin per day?

    There is a maximum of 1 nonstop flight a day that takes off from Knoxville and lands in Austin, with an average flight time of 2h 26m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 2 flights.

  • What is the cheapest flight from Knoxville to Austin?

    In the last 5 days, the lowest price for a flight from Knoxville to Austin was $38 for a one-way ticket and $78 for a round-trip.

  • Do I need a passport to fly between Knoxville and Austin?

    A passport is not required to fly from Knoxville to Austin.

  • Which airports will I be using when flying from Knoxville to Austin?

    Knoxville airport is called Knoxville McGhee Tyson and the only airport in Austin is Austin Bergstrom.

  • Which airlines offer Wi-Fi service onboard planes from Knoxville to Austin?

    American Airlines, Alaska Airlines, and Delta offer inflight Wi-Fi service on the Knoxville to Austin flight route.

  • Which aircraft models fly most regularly from Knoxville to Austin?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Knoxville to Austin flight route.

  • Which airline alliances offer flights from Knoxville to Austin?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Knoxville and Austin, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Knoxville to Austin?

    You can catch a nonstop flight from Knoxville to Austin on on Monday, and Friday.

  • Which is the best airline for flights from Knoxville to Austin, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Knoxville to Austin are Southwest and Delta. With an average price for the route of $367 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $420 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Knoxville to Austin?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to Austin.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Austin?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Austin from Knoxville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to Austin?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Austin with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and AUS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Austin?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Austin from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Knoxville to Austin

  • Looking for a cheap flight? 25% of our users found flights on this route for $88 or less one-way and $120 or less round-trip.
  • Passengers who choose connecting flights from Knoxville (TYS) to Austin (AUS) can expect layovers in various cities depending on the airline. Some common layovers include Dallas (DFW), Atlanta (ATL), Charlotte (CLT), Denver (DEN), and Washington (IAD).
  • Delta provides wheelchair assistance to passengers who require mobility assistance throughout their travels, including for flights from Knoxville to Austin. This service is available at no charge, and passengers can request wheelchair assistance ahead of time or at the airport.
  • United Airlines offers flights from Knoxville to Austin and has pledged to power 100% of their flights with SAF by 2050, which is expected to reduce their greenhouse gas emissions by up to 80% compared to traditional jet fuel.
  • American Airlines guarantees that children will be seated next to their parents or guardians on flights from Knoxville to Austin at no charge. The airline offers several family-oriented services for parents and children, including kid-friendly food and in-flight entertainment for children.
  • McGhee Tyson Airport (TYS) has one passenger terminal building that handles all activities, including departures for flights to Austin. The terminal building is equipped with a number of information desks that may help travelers with any queries or issues they may have, and passengers can make any confirmations related to flights from TYS to Austin.

Prefer to fly direct from Knoxville to Austin?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Knoxville McGhee Tyson to Austin Bergstrom.
Find which airlines fly direct from Knoxville McGhee Tyson Airport to Austin Bergstrom Airport, which days they fly and book direct flights.

Direct departures

Knoxville McGhee Tyson to Austin Bergstrom

Monday

Allegiant Air

Allegiant Air

Thursday

Southwest,Allegiant Air

Southwest,Allegiant Air

Friday

Allegiant Air,Southwest

Allegiant Air,Southwest

Saturday

Southwest

Southwest

Sunday

American Airlines,Delta,Southwest, +1 more

American Airlines,Delta, +2 more

See more direct flights

Direct returns

Austin Bergstrom to Knoxville McGhee Tyson

Monday

Allegiant Air

Allegiant Air

Thursday

Southwest,Allegiant Air

Southwest,Allegiant Air

Friday

Allegiant Air,American Airlines,Delta, +1 more

Allegiant Air,American Airlines, +2 more

Saturday

Southwest

Southwest

Sunday

Southwest,Allegiant Air

Southwest,Allegiant Air

See more direct flights

Reviews of the top 5 airlines serving from Knoxville to Austin

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Austin. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Austin? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4221 reviews
8.6Crew
7.5Entertainment
8.0Comfort
7.0Food
8.1Boarding
Airline reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

10.0 ExcellentK, Jun 2026
SAN - AUS
Read more Southwest reviews

Great job Southwest! My family doesn't fly often but we felt safe the whole time.

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

It seems as though the provisions are even less. Although SWA used to be an economy Airline, that isn't really the case anymore. I paid over $700. for a round trip to Denver and I could have flown just about any airline for the price. The drinks are now in a 6-ounce cup and with ice I'm sure a can would fill more than 2 cups. However, I am very proud of SWA for using paper rather than continuing to contribute to the millions of plastic cups being used each day. I've thought of this fr many years and am so glad to see it come to fruition, if not by only SWA so far.

Crew was great - friendly and helpful with boarding - letting folks know where overhead space was available thus getting us out of the gate on time.

Boarding was quick and simple However when I was at my seat there was a child kicking my me from behind which made me uncomfortable but besides that the flight was smooth

AC wasn't working then we sat on the tarmac in Austin for 40 minutes waiting for a gate.

I stopped flying southwest a long time ago. I don’t care for their boarding process, especially when I have a family to try and seat together. The early bird check in made it so much easier. As long as you do that, it’s great.

Excellent! Very attentive & helpful during a weather delay to keep people safe, com, and informed!

Issue during taxi lead to two hours of sitting in the tarmac and a lot of miscommunication and confusion from flight crew

My flight home from Knoxville, TN, included a layover in Atlanta. I boarded the aircraft in Zone 5 and although there was limited overhead space, I was able to put my 'backpack' style roller-bag above my seat. Unfortunately, due to continued bad weather, we had to deplane. There were many people who would have missed their connection, so they rebooked. When we were re-boarding, the gate agent welcomed zone 5 and then made an announcement: All roller-bags for zone 5 passengers and higher will need to be gate checked. I promptly pushed the telescoping handle in and held my bag like a backpack. I was able to bring it on board, which was a relief. Upon entering the aircraft it became apparent that there was easily 40% open overhead space. There were audible signs of angry passengers who felt duped into checking their bags when in fact there were noticeably LESS passengers on the aircraft and TONS of overhead space. I'm not sure what kinds of parameters are used to determine when to cut off roller-bags from being brought on board, but it seemed deceptive and underhanded to have so many people get stuck checking their bags when clearly there was ample room for at least one more zone.

The CRJ-900 was clean but the overhead air vents were broken in our First Class row, making the cabin very hot until about 30 mins into the flight. The flight attendants were both extremely apologetic and accommodating though so that is why I rated the flight as very good. They checked on us many times and truly showed they cared. The snacks for an hour and a half flight could be better. Would be nice if there was a small plated meal over convenient store snacks. WiFi also was not working. And it would be nice if Delta had adjustable headrests on these planes.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Smaller plane for a longer flight than my first one. Doesn’t make sense.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

They were an hour late and they didn’t have my wheelchair for me

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

Food service was bare-bone. Better bot to have any at all rather than hand out premade coffees and cookies to random few passengers.

due to delay, we were downgraded in seating, so it was cramped

Flight staff and all was fine. Food always sucks on planes so nothing new.

Wonderful flight! The crew was good, check-in was good and orderly and the flight was uneventful and good.

The head rest is too big and cannot be placed differently/removed. Causes one head to tilt forward and increase back pain

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Even though we were delayed, we were able to make our connection

The planes are so dirty! Food crumbs and finger print smudges, Dust over the vents and carpet stains. It’s disgusting.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Both of the first class flight attendants were rude, to everyone, not just us. The one in coach was more helpful to us than the ones in first class!

It would have helped if I knew it would be air Canada jazz/rouge. The flight was ok but the planes are older and smaller with no entertainment. Fitting the carry one every one had was tricky and made the process longer. Overall it was ok but I actually booked a company other than air Canada and got them which was disappointing.I prefer American or overseas airlines over Canadian because the experience is usually better

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

A very pleasant flight but it would be greatly improved with wifi to help entertain kids

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

Leave on time. We waited on the plane for hour hours and it was hot and smelly

It was the most un-special flight experience in my life.

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

This was a horrible American Airlines experience, and it discourages me from flying with them again. It may have stemmed from a mechanical delay, but it appeared that the team was unprepared to respond to the delay. After boarding, we waited an hour before finally taking off. After landing at our destination, we waited an additional hour on the tarmac waiting for a gate (at 8:00pm) to be assigned and cleared. The flight crew did their best, but they were clearly tired and also ready to be done for the day. Because of the delay, I missed a connecting flight. It was a very poor experience.

The plane was very warm and the crew turned on the lights for the entire snack service.

It is okay. Flight was on time to start and early to land

The gate crew did try to help, however they lacked the information as to whether the flight will operate or not. Being delayed 6 hours and in a limbo on whether the flight will operate or not is not fun. The airline having staffing issues is not encouraging at all.

Gossipy flight attendants talked the whole flight about bar hopping and dating.

Everything you need to know for your flight from Knoxville to Austin

Information on your arrival and departure airports