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 5/29. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Austin.
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Everything you should know

Cheapest round-trip
$105
Overall average: $274
Allegiant Air
Mon 6/15Fri 6/19
TYS - AUS • Non-stop
Cheapest one-way
$52
Typical prices: $66-$134
Allegiant Air
Fri 5/29
TYS - AUS • Non-stop
Nonstop flights
Mon, Fri
You can fly direct with Allegiant Air. Average duration is 0
Direct flights
Direct flights
+1
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Direct flights
Direct flights
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Top airlines
Cheapest • from $105 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 37% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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We hope you love your trip to Austin!
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

Mon, Jun 15 - Fri, Jun 19
Allegiant Air Logo
6:30 am - 7:48 am
TYS
-
AUS
2h 18mnonstop
Allegiant Air Logo
8:38 am - 11:59 am
AUS
-
TYS
2h 21mnonstop
$105Allegiant Air
Mon, Jun 15 - Fri, Jun 19
Allegiant Air Logo
6:30 am - 7:48 am
TYS
-
AUS
2h 18mnonstop
Allegiant Air Logo
8:38 am - 11:59 am
AUS
-
TYS
2h 21mnonstop
$127Allegiant Air
Fri, Jun 19 - Mon, Jul 6
Allegiant Air Logo
6:30 am - 7:48 am
TYS
-
AUS
2h 18mnonstop
Allegiant Air Logo
8:42 am - 12:03 pm
AUS
-
TYS
2h 21mnonstop
$141Allegiant Air
Fri, May 29 - Mon, Jun 1
Allegiant Air Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
8:26 am - 11:37 am
AUS
-
TYS
2h 11mnonstop
$154Allegiant Air
Fri, May 22 - Mon, May 25
Allegiant Air Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
8:26 am - 11:37 am
AUS
-
TYS
2h 11mnonstop
$177Allegiant Air
Fri, Apr 10 - Mon, Apr 13
Frontier Logo
4:20 pm - 12:21 am
TYS
-
AUS
9h 01m
1 stop
Frontier Logo
6:45 am - 3:28 pm
AUS
-
TYS
7h 43m
1 stop
$180Frontier
Mon, Jun 22 - Fri, Jun 26
Allegiant Air Logo
6:30 am - 7:48 am
TYS
-
AUS
2h 18mnonstop
Allegiant Air Logo
8:38 am - 11:59 am
AUS
-
TYS
2h 21mnonstop
$196Allegiant Air
Fri, May 29 - Mon, Jun 1
Multiple Airlines Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
Multiple Airlines Logo
11:35 am - 11:37 pm
AUS
-
TYS
11h 02m
1 stop
$218Multiple Airlines
Fri, May 29 - Sun, May 31
Allegiant Air Logo
6:00 am - 7:36 am
TYS
-
AUS
2h 36mnonstop
Allegiant Air Logo
7:48 pm - 9:13 pm
AUS
-
TYS
24h 25m
1 stop
$226Allegiant Air
Fri, Jun 12 - Mon, Jun 15
Frontier Logo
8:32 pm - 9:13 am
TYS
-
AUS
13h 41m
1 stop
Frontier Logo
9:58 am - 7:37 pm
AUS
-
TYS
8h 39m
1 stop
$230Frontier
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.

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 Sunday, 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 October, where tickets cost $212 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $415 and $393 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 3 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$52
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 32% 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 $105 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 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.

  • 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 $364 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 $334 and an overall rating of 7.9.

  • 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 $250 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

Friday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Austin Bergstrom to Knoxville McGhee Tyson

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

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 4324 reviews
8.1Boarding
7.0Food
8.6Crew
8.0Comfort
7.5Entertainment
Airline reviews

I elected to pay for the upgrades and found very little difference

6.0 GoodChris, Mar 2026
DAL - SAT
Read more Southwest reviews

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Everything was on time and service on the flight was great!

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Very old flight - time to retire it for newer airplanes

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything except the food and entertainment. It was a great experience though

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

Terrible planning. And even worse gate agents. Absolutely rude behavior.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

They put me on an earlier and I got home sooner

Not good. One of my luggage is missing. And until now they can’t find it

Delay after delay with little communication then AA lost my luggage and at airport would not assist just said scan this QR code to track your luggage and submit a claim. However QR code provided did not work so have to go back to airport

Where do I start!! I was delayed with my flight from Dallas to Tampa. On the way back from Tampa to Dallas the flight was delayed over 4 hours+. I was put on another flight that was also delayed but not as long. Traveling on American Airlines is becoming exhausing.

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

The flight attendants and the service is getting worse by the day.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

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

Information on your arrival and departure airports