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Find cheap Southwest flights to Knoxville

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

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

This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:00 am
HOU
-
TYS
1 stop5h 25m
Southwest
Mon 8/171:00 pm
TYS
-
HOU
1 stop8h 00m
Southwest
Deal found 7/23$257
This Southwest deal was found by Cheapflights users on 7/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/199:30 am
HOU
-
TYS
1 stop3h 50m
Southwest
Wed 8/267:00 am
TYS
-
HOU
2 stops7h 45m
Southwest
Deal found 7/22$262
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 am
HOU
-
TYS
2 stops8h 55m
Southwest
Fri 8/217:10 am
TYS
-
HOU
2 stops8h 55m
Southwest
Deal found 7/23$267

Flights to Knoxville with Southwest at a glance

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

Round-trip from

$257

One-way from

$129

Good one-way deal

$128 or less
Southwest
  • Southwest
  • 8/14-8/17
  • 2 total stops
  • 13h 25m total
  • USA to Knoxville
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Southwest
  • Southwest
  • 8/18
  • 1 total stop
  • 4h 50m total
  • USA to Knoxville
Search Deals
Price to beat on a one-way flight from the United States to Knoxville with Southwest.
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Cheapflights Insights

Find cheap Southwest flights to Knoxville

How long is the flight to Knoxville with Southwest?

On average, Southwest 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.

Southwest weekly flight availability to Knoxville

The most flights to Knoxville operated by Southwest are scheduled on a Saturday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

FAQs about flights to Knoxville with Southwest

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

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

  • Is Southwest 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 Southwest that fly to Knoxville?

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

  • How much is a flight to Knoxville with Southwest?

    The average price for a return flight with Southwest is $387; with a one-way flight around $232.

See more FAQs

Reviews of Southwest

See what Cheapflights users have to say about their Southwest experience.
Southwest
8.0
Very good
4,229 reviews
Overview

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Popular Southwest flights

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