Cheap Flights from Knoxville to St Louis
No deal from Knoxville to St Louis has cleared our price bar yet. What we have seen on the route is below.
Across 2 months of observations from Knoxville to St Louis, the lowest round-trip fare we recorded was $344, in October. The typical fare was $419. October was the cheapest month we saw and August the dearest.
The most recent price we saw on this route was $344 on United, seen Oct 31. It is an unverified observation and may have changed.
See every deal from Knoxville, to St Louis, or the return direction St Louis to Knoxville.
Latest price we saw: Knoxville to St Louis
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Knoxville (TYS) to St Louis (STL) | $344 | 42.5¢ | Nov 20 – Nov 26 | United | Oct 31 | Check price |
Price history: Knoxville to St Louis
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $344 | $344 | 1 |
| Aug 2026 | $495 | $495 | 11 |
Frequently asked questions
How many flight deals from Knoxville to St Louis are on Sparkflights right now?
There are 0 verified deals from Knoxville to St Louis on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Knoxville to St Louis?
The lowest fare we've recorded from Knoxville to St Louis is $344, based on 12 price observations over 2 months.
How much does a flight from Knoxville to St Louis cost?
The typical round-trip fare we observed from Knoxville to St Louis is $419, against a recorded low of $344. These are observations, not quotes.
When is the cheapest month to fly Knoxville to St Louis?
October was the cheapest month we observed from Knoxville to St Louis and August the dearest, over 2 months of data.
What is the current price from Knoxville to St Louis?
The most recent fare our sweep saw from Knoxville to St Louis is $344, on Oct 31. It is an unverified observation rather than a verified deal, so check it before booking.