TYS - AUS

$52 Find Cheap Flights from Knoxville to Austin

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 11/21. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Austin

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Austin, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Austin, as well as popular online travel agencies
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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, Dec 12 - Mon, Dec 15
Allegiant Air Logo
1:41 pm - 3:15 pmTYS-AUS
2h 34mnonstop
Allegiant Air Logo
4:05 pm - 7:14 pmAUS-TYS
2h 09mnonstop
$103Allegiant Air
Find Deal
Fri, Dec 12 - Mon, Dec 15
Allegiant Air Logo
1:41 pm - 3:15 pmTYS-AUS
2h 34mnonstop
Allegiant Air Logo
4:05 pm - 7:14 pmAUS-TYS
2h 09mnonstop
$127Allegiant Air
Find Deal
Fri, Dec 12 - Mon, Dec 15
Multiple Airlines Logo
1:41 pm - 3:15 pmTYS-AUS
2h 34mnonstop
Multiple Airlines Logo
6:55 am - 3:57 pmAUS-TYS
8h 02m1 stop
$131Multiple Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Allegiant Air Logo
12:50 pm - 2:29 pmTYS-AUS
2h 39mnonstop
Allegiant Air Logo
3:19 pm - 6:23 pmAUS-TYS
2h 04mnonstop
$134Allegiant Air
Find Deal
Fri, Dec 12 - Mon, Dec 15
Multiple Airlines Logo
1:41 pm - 3:15 pmTYS-AUS
2h 34mnonstop
Multiple Airlines Logo
6:55 am - 3:57 pmAUS-TYS
8h 02m1 stop
$143Multiple Airlines
Find Deal
Thu, Dec 11 - Mon, Dec 15
Frontier Logo
4:52 pm - 12:14 amTYS-AUS
8h 22m1 stop
Frontier Logo
6:55 am - 3:57 pmAUS-TYS
8h 02m1 stop
$150Frontier
Find Deal
Thu, Dec 11 - Sun, Dec 14
Frontier Logo
4:52 pm - 12:14 amTYS-AUS
8h 22m1 stop
Frontier Logo
6:55 am - 3:57 pmAUS-TYS
8h 02m1 stop
$183Frontier
Find Deal
Tue, Dec 9 - Sat, Dec 13
Delta Logo
2:37 pm - 7:13 pmTYS-AUS
5h 36m1 stop
Delta Logo
12:20 pm - 6:58 pmAUS-TYS
5h 38m1 stop
$251Delta
Find Deal
Tue, Dec 9 - Mon, Jan 19
United Airlines Logo
7:05 am - 12:59 pmTYS-AUS
6h 54m1 stop
United Airlines Logo
2:13 pm - 7:50 pmAUS-TYS
4h 37m1 stop
$285United Airlines
Find Deal
Tue, Dec 9 - Fri, Dec 12
Delta Logo
2:37 pm - 7:13 pmTYS-AUS
5h 36m1 stop
Delta Logo
6:27 pm - 11:28 pmAUS-TYS
4h 01m1 stop
$305Delta
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $103 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Video guide: How to find cheap flights to Austin
Watch video
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When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 40% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 26% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
5 days a week
There are direct flights from Knoxville to Austin 5 days a week: Mon, Wed, Fri, Sat, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$103
Typical prices: $207-$308
Allegiant Air
Fri 12/12Mon 12/15
TYS - AUS • Non-stop
Cheapest one-way
$52
Typical prices: $109-$294
Allegiant Air
Fri 11/21
TYS - AUS • Non-stop
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We hope you love your trip to Austin!
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.

Find cheap flights to Austin
Find cheap flights to Austin

Planning a trip from Knoxville to Austin? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 December.

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 Monday. On your return trip to Knoxville, you should consider flying back on a Sunday, and avoid Saturdays 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 October, where tickets cost $212 (return) on average. On the other hand, the most expensive months are September and April, where the average cost of round-trip tickets is $358 and $353 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 4 weeks before departure, which saves you about 40% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$52
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 26% 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.

  • What is the cheapest flight from Knoxville to Austin?

    In the last 3 days, the lowest price for a flight from Knoxville to Austin was $52 for a one-way ticket and $103 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?

    Only American Airlines offers 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, Wednesday, Friday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from Knoxville to Austin are Delta and United Airlines. With an average price for the route of $316 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $343 and an overall rating of 7.4.

  • 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 $89 or less one-way and $134 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

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Austin Bergstrom to Knoxville McGhee Tyson

Monday

Allegiant Air

Allegiant Air

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 4 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.
7.9
DeltaOverall score based on 7992 reviews
7.9Comfort
7.3Food
7.9Entertainment
8.2Boarding
8.5Crew
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

Crew and customer service were excellent. This flight also had plenty of leg room and seat mounted screens for entertainment. A very pleasant flight all around!

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

Delayed delayed delayed and no offer for food or vouchers

A couple ladies from the crew were so rude and nasty. Thought they were mad at having to be there especially if you asked a question. This will make me think twice next time if I book a flight with you.

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Flight attendants on this flight were very attentive and friendly

You can plug your phone in & use their wifi to watch movies, etc, but the plane’s wifi was disconnected for most of the flight.

Very below average , plane from Dallas to Toyko was very poor designed plane. I had to sit for 13 hours next to fat man. Really bad seat and entertainment screen sucked

Full flight so overhead bin space ran out & bags had to be checked. When you’re in the last boarding group, you might as well expect that. Don’t pay to check bags though because when they run out of space for carry-ons, they check your bag to your destination for free. When traveling with children, no need to pay extra for seats, they will assign seats & have to sit your children with you.

American almost always Delays flights from Austin to Dallas and back. I cannot believe they have such poor service on this route. I was about to switch to American from Delta, but they gave me enough reasons not to.

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

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!

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

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

Information on your arrival and departure airports

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