AirHint found the following cheapest return flights from Knoxville (TYS) to Jacksonville (JAX) in May 2026 (see full year).
Return flights
| 07 May - 10 May | Allegiant Air | direct | |
| 07 May - 14 May | Allegiant Air | direct | |
| 14 May - 14 May | Allegiant Air | direct | |
| 13 May - 17 May | Allegiant Air | ||
| 23 May - 24 May | Delta |
Also check the deals for one-way flights from Knoxville to Jacksonville in May.
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