Trip.com
>
Flights
>
Flights to United States
>
Flights to Texas
>
Flights to Austin
Hotels in Austin
>
Flights from Knoxville to Austin

What to know about flights from Knoxville to Austin?

The distance between Knoxville and Austin is approximately 1,421.89 km. It takes around 2 hours 30 minutes on average to fly from Knoxville to Austin. Based on Trip.com's data, travel demand peaks in January.

Cheapest one-way
$44
Allegiant Air Allegiant Air TYS-AUS 2h 28m · Nonstop Mon, Nov 16
Select flight
Cheapest round-trip
$119
Allegiant Air Allegiant Air TYS-AUS 2h 28m · Nonstop Fri, Nov 6 - Mon, Nov 9
Select flight
Recommended airlines
Allegiant Air Allegiant Air Cheapest · From $44 Allegiant Air Allegiant Air Most booked
When to travel
September
Cheapest
January
Peak season for travel
Route details
1,421.89 km
Flight distance
2h 30m
Average flight time

Explore the cheapest one-way and round-trip flights from Knoxville to Austin over the next 90 days, with one-way fares from $44 and round-trip from $119. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        TYS 7:00 AM
        2h 28m
        Nonstop
        AUS 8:28 AM
        Knoxville - Austin | Fri, Nov 6 | Allegiant Air
        AUS 10:48 AM
        2h 21m
        Nonstop
        TYS 2:09 PM
        Austin - Knoxville | Mon, Nov 9 | Allegiant Air
        $119 $271
        56% off
        56% off
        $271 $119
      • TYS 7:20 AM
        2h 28m
        Nonstop
        AUS 8:48 AM
        Knoxville - Austin | Mon, Nov 2 | Allegiant Air
        AUS 10:48 AM
        2h 21m
        Nonstop
        TYS 2:09 PM
        Austin - Knoxville | Mon, Nov 9 | Allegiant Air
        $155 $271
        43% off
        43% off
        $271 $155
      • TYS 8:30 AM
        2h 28m
        Nonstop
        AUS 9:58 AM
        Knoxville - Austin | Fri, Oct 30 | Allegiant Air
        AUS 9:38 AM
        2h 16m
        Nonstop
        TYS 12:54 PM
        Austin - Knoxville | Mon, Nov 2 | Allegiant Air
        $178 $271
        34% off
        34% off
        $271 $178
      • TYS 7:20 AM
        2h 28m
        Nonstop
        AUS 8:48 AM
        Knoxville - Austin | Mon, Oct 26 | Allegiant Air
        AUS 10:48 AM
        2h 16m
        Nonstop
        TYS 2:04 PM
        Austin - Knoxville | Fri, Oct 30 | Allegiant Air
        $204
        25% off
        $271 $204
      • TYS 12:01 PM
        2h 28m
        Nonstop
        AUS 1:29 PM
        Knoxville - Austin | Thu, Oct 15 | Allegiant Air
        AUS 1:48 PM
        2h 16m
        Nonstop
        TYS 5:04 PM
        Austin - Knoxville | Sun, Oct 18 | Allegiant Air
        $238
        12% off
        $271 $238
      • TYS 5:40 AM
        5h 14m
        1 stop
        AUS 9:54 AM
        Knoxville - Austin | Thu, Dec 3 | Delta Air Lines
        AUS 5:20 AM
        5h 7m
        1 stop
        TYS 11:27 AM
        Austin - Knoxville | Mon, Dec 7 | Delta Air Lines
        $220
        19% off
        $271 $220
      • TYS 2:38 PM
        6h 50m
        1 stop
        AUS 8:28 PM
        Knoxville - Austin | Mon, Nov 2 | Delta Air Lines
        AUS 6:41 PM
        4h 18m
        1 stop
        TYS 11:59 PM
        Austin - Knoxville | Mon, Nov 9 | Delta Air Lines
        $233
        14% off
        $271 $233
      • TYS 8:30 AM
        2h 28m
        Nonstop
        AUS 9:58 AM
        Knoxville - Austin | Mon, Nov 16 | Allegiant Air
        AUS 4:17 PM
        4h 40m
        1 stop
        TYS 9:57 PM
        Austin - Knoxville | Mon, Nov 23 | United Airlines
        $241
        11% off
        $271 $241
      • TYS 5:40 AM
        5h 14m
        1 stop
        AUS 9:54 AM
        Knoxville - Austin | Fri, Dec 4 | Delta Air Lines
        AUS 5:20 AM
        5h 7m
        1 stop
        TYS 11:27 AM
        Austin - Knoxville | Mon, Dec 7 | Delta Air Lines
        $246
        9% off
        $271 $246
      • TYS 5:40 AM
        5h 14m
        1 stop
        AUS 9:54 AM
        Knoxville - Austin | Mon, Dec 7 | Delta Air Lines
        AUS 6:25 AM
        4h 2m
        1 stop
        TYS 11:27 AM
        Austin - Knoxville | Fri, Dec 11 | Delta Air Lines
        $246
        9% off
        $271 $246
      • TYS 1:00 PM
        17h 25m
        1 stop
        AUS 2:00 PM
        Knoxville - Austin | Wed, Oct 14 | Normal Airline
        AUS 3:00 PM
        6h
        Nonstop
        TYS 4:00 PM
        Austin - Knoxville | Fri, Oct 16 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        TYS 8:30 AM
        2h 28m
        Nonstop
        AUS 9:58 AM
        Knoxville - Austin | Mon, Nov 16 | Allegiant Air
        $44 $151
        71% off
        71% off
        $151 $44
      • TYS 8:30 AM
        2h 28m
        Nonstop
        AUS 9:58 AM
        Knoxville - Austin | Mon, Nov 9 | Allegiant Air
        $88 $151
        42% off
        42% off
        $151 $88
      • TYS 7:20 AM
        2h 28m
        Nonstop
        AUS 8:48 AM
        Knoxville - Austin | Mon, Oct 26 | Allegiant Air
        $91 $151
        40% off
        40% off
        $151 $91
      • TYS 7:20 AM
        2h 28m
        Nonstop
        AUS 8:48 AM
        Knoxville - Austin | Mon, Nov 2 | Allegiant Air
        $109
        28% off
        $151 $109
      • TYS 12:01 PM
        2h 28m
        Nonstop
        AUS 1:29 PM
        Knoxville - Austin | Thu, Oct 15 | Allegiant Air
        $134
        11% off
        $151 $134
      • TYS 7:22 PM
        6h
        1 stop
        AUS 12:22 AM
        Knoxville - Austin | Mon, Nov 9 | Delta Air Lines
        $113
        25% off
        $151 $113
      • TYS 2:38 PM
        6h 50m
        1 stop
        AUS 8:28 PM
        Knoxville - Austin | Mon, Nov 2 | Delta Air Lines
        $126
        17% off
        $151 $126
      • TYS 7:22 PM
        6h
        1 stop
        AUS 12:22 AM
        Knoxville - Austin | Mon, Nov 16 | Delta Air Lines
        $132
        13% off
        $151 $132
      • TYS 6:06 PM
        5h 37m
        1 stop
        AUS 10:43 PM
        Knoxville - Austin | Tue, Oct 27 | American Airlines
        $132
        13% off
        $151 $132
      • TYS 5:40 AM
        5h 20m
        1 stop
        AUS 10:00 AM
        Knoxville - Austin | Sat, Oct 24 | Delta Air Lines
        $137
        9% off
        $151 $137
      • TYS 1:00 PM
        17h 25m
        1 stop
        AUS 2:00 PM
        Knoxville - Austin | Wed, Oct 14 | Normal Airline
        Find more flights
        Find more flights

Which airlines are the most popular for Knoxville to Austin flights?

Direct flights available! Find 1 airlines fly direct from Knoxville to Austin, including Allegiant Air, Allegiant Air offers the cheapest non stop flights.
Allegiant Air logo Allegiant Air
Airlines are determined based on actual purchased flight tickets from Knoxville to Austin according to previous 12 months data from Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Knoxville to Austin (TYS-AUS)?

    Based on Trip.com data, Allegiant Air offers one-way fares as low as $44 on Cheapest nonstop routes (e.g. TYS to AUS on Mon, Nov 16), while Allegiant Air offers Cheapest nonstop round-trips from $119 departing on Fri, Nov 6 and returning on Mon, Nov 9.
  • At the moment, you can catch a nonstop flight from Knoxville to Austin with the following airlines, including: Allegiant Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 2 hours 30 minutes to fly from Knoxville (TYS) to Austin (AUS).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Knoxville to Austin is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Knoxville to Austin, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Nov 16, with one-way flights priced at just $44.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Allegiant Air.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Austin travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Knoxville to Austin is September, when demand for travel is lower.
  • After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Knoxville to Austin on October 15, 2026 with Allegiant Air, with prices starting at $66.
  • You can arrive at any of the following airports in Austin: Austin-Bergstrom International Airport (AUS). Flights from Mcghee Tyson Airport to Austin-Bergstrom International Airport (TYS-AUS) are by far the most popular option for this route.
  • The time difference between Austin and Knoxville is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.
  • Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Knoxville to Austin is $257. Fares vary by travel date, airline and availability.
  • Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Knoxville to Austin is $404. The final price depends on the outbound and return dates, airline and fare conditions.
  • Enter Knoxville and Austin, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.
  • Allegiant Airare the most popular budget airlines flying from Knoxville to Austin. Check baggage, seat and payment fees before comparing the final price.

Explore More Popular Flights

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.