Cheapest return flights from St. Petersburg to Knoxville in January from $80

AirHint found the following cheapest return flights from St. Petersburg (PIE) to Knoxville (TYS) in January 2026 (see full year).

Return flights

04 Jan - 08 Jan Allegiant Air direct
02 Jan - 08 Jan Allegiant Air direct
04 Jan - 05 Jan Allegiant Air direct
02 Jan - 05 Jan Allegiant Air direct
04 Jan - 23 Jan Allegiant Air direct
02 Jan - 23 Jan Allegiant Air direct
11 Jan - 23 Jan Allegiant Air direct
01 Jan - 08 Jan Allegiant Air direct
04 Jan - 18 Jan Allegiant Air direct
02 Jan - 18 Jan Allegiant Air direct
18 Jan - 08 Feb Allegiant Air direct

Also check the deals for one-way flights from St. Petersburg to Knoxville in January.

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