What is the cheapest month to fly from Knoxville to Louisville?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Knoxville (TYS) to Louisville (SDF), with fares starting from $155.

What is the lowest current fare from TYS to SDF?

The lowest currently-listed fare from Knoxville (TYS) to Louisville (SDF) is $155 on 2026-05-29.

Is there a direct flight from Knoxville to Louisville?

There is currently no non-stop service from TYS to SDF. Most travellers connect through a hub airport. See our route page for current stopover options.

Cheap flights from Knoxville to Louisville

Cheapest current fares: $155 in May 2026 on connecting flights.

Last updated May 26, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Knoxville (TYS) to Louisville (SDF). Refreshed daily.

Knoxville (TYS) → Louisville (SDF)

May 2026 $155
June 2026 $261

Frequently asked questions

What is the cheapest month to fly from Knoxville to Louisville?

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Knoxville (TYS) to Louisville (SDF), with fares starting from $155.
What is the lowest current fare from TYS to SDF?

The lowest currently-listed fare from Knoxville (TYS) to Louisville (SDF) is $155 on 2026-05-29.
Is there a direct flight from Knoxville to Louisville?

There is currently no non-stop service from TYS to SDF. Most travellers connect through a hub airport. See our route page for current stopover options.

Related guides for this route

Sibling pages — full route detail, airport overviews, visa context, per-airline routes.