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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Louisville (SDF) to Knoxville (TYS), with fares starting from $123.

What is the lowest current fare from SDF to TYS?

The lowest currently-listed fare from Louisville (SDF) to Knoxville (TYS) is $123 on 2026-05-31.

Is there a direct flight from Louisville to Knoxville?

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

Cheap flights from Louisville to Knoxville

Cheapest current fares: $123 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 Louisville (SDF) to Knoxville (TYS). Refreshed daily.

Louisville (SDF) → Knoxville (TYS)

May 2026 $123

Frequently asked questions

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

Based on current 6-month forward fare data, May 2026 is the cheapest month to fly from Louisville (SDF) to Knoxville (TYS), with fares starting from $123.
What is the lowest current fare from SDF to TYS?

The lowest currently-listed fare from Louisville (SDF) to Knoxville (TYS) is $123 on 2026-05-31.
Is there a direct flight from Louisville to Knoxville?

There is currently no non-stop service from SDF to TYS. 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.