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Find cheap Allegiant Air flights to Knoxville

RDU — TYS
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Allegiant Air flight deals to Knoxville

Cheapest Allegiant Air flights from USA to Knoxville
Explore the most affordable Allegiant Air flight options available from USA to Knoxville. Find the lowest fares with prices last updated on July 27, 2026.

This Super.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/313:16 pm
IAD
-
TYS
Nonstop1h 26m
Allegiant Air
Mon 8/312:53 pm
TYS
-
IAD
Nonstop1h 33m
Allegiant Air
Deal found 7/23$81
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:03 pm
HOU
-
TYS
Nonstop2h 09m
Allegiant Air
Fri 8/211:26 pm
TYS
-
HOU
Nonstop2h 20m
Allegiant Air
Deal found 7/26$93
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/148:03 pm
HOU
-
TYS
Nonstop2h 09m
Allegiant Air
Mon 8/241:26 pm
TYS
-
HOU
Nonstop2h 20m
Allegiant Air
Deal found 7/26$96

Flights to Knoxville with Allegiant Air at a glance

Find detailed information about Allegiant Air flights from USA to Knoxville. Explore the options provided by Allegiant Air to plan your journey from USA to Knoxville. Data last updated July 27, 2026.

Popular in

March

Cheapest in

August

Average price

$168

Round-trip from

$79

One-way from

$38

Good round-trip deal

$68 or less

Good one-way deal

$54 or less
Highest demand for flights to Knoxville with Allegiant Air; 1% potential price increase.
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Best time to find cheap flights to Knoxville with Allegiant Air; 1% potential price drop.
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Average price for flights to Knoxville with Allegiant Air (round-trip).
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Allegiant Air
  • Allegiant Air
  • 10/22-10/25
  • Nonstop
  • 2h 54m total
  • USA to Knoxville
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Allegiant Air
  • Allegiant Air
  • 10/18
  • Nonstop
  • 1h 28m total
  • USA to Knoxville
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Price to beat on a round-trip flight from the United States to Knoxville with Allegiant Air.
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Price to beat on a one-way flight from the United States to Knoxville with Allegiant Air.
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Cheapflights Insights

Find cheap Allegiant Air flights to Knoxville

How long is the flight to Knoxville with Allegiant Air?

On average, Allegiant Air flights from the United States to Knoxville take 1 hour 48 minutes. Flights to Knoxville from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Allegiant Air weekly flight availability to Knoxville

The most flights to Knoxville operated by Allegiant Air are scheduled on a Friday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

When is the best time to book a flight to Knoxville with Allegiant Air?

The best time to book a flight to Knoxville with Allegiant Air is 52 days before departure. On average, fares are higher if you book on the same day as departure.

When is the cheapest time to fly to Knoxville with Allegiant Air?

Users looking for the cheapest Allegiant Air fares to Knoxville should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Tuesday afternoons, when prices are usually at their highest.

FAQs about flights to Knoxville with Allegiant Air

  • Which airport do Allegiant Air flights arrive at when travelling to Knoxville?

    Allegiant Air flights on this route tend to land at Knoxville McGhee Tyson Airport.

  • Is Allegiant Air the cheapest airline for a flight to Knoxville?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Knoxville tends to be with Avelo Airlines.

  • Are there alternative airlines other than Allegiant Air that fly to Knoxville?

    American Airlines, Delta and United Airlines all fly to Knoxville and offer an alternative to Allegiant Air.

  • How much is a flight to Knoxville with Allegiant Air?

    The average price for a return flight with Allegiant Air is $164; with a one-way flight around $103.

See more FAQs

Reviews of Allegiant Air

See what Cheapflights users have to say about their Allegiant Air experience.
Allegiant Air
7.3
Good
680 reviews
Overview

Comfort

6.9

Food

5.8

Crew

8.1

Boarding

7.7

Entertainment

5.4

Popular Allegiant Air flights

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