FFL Helper
Knoxville TYS
$269
STL → TYS · Southwest Airlines
FFL Helper / St Louis / Knoxville / August 2026
STL → TYS · 2026-08
St Louis to Knoxville in August 2026
Dated one-way fares from St Louis to Knoxville in August 2026. Use the calendar to see which days are cheaper.
Lowest this month
$269
Highest this month
$269
Sample fare
$269
Airports
STL–TYS
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Other months: August 2026 · Full route
August 2026 price calendar
August 2026
From $269
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$269
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Dated fares
Booking STL to TYS in August 2026
This page is only August 2026 on the St Louis to Knoxville route. Open the full route if you want the next months side by side.
Prices move as seats sell. Confirm the live itinerary before you book St Louis to Knoxville in August 2026.