Cheap flights from Louisville to Knoxville
Cheapest current fares: $123 in May 2026 on connecting flights.
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
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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.
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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.
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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.