Cheap Flights from St Louis to St Denis
No deal from St Louis to St Denis has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from St Louis to St Denis, the lowest round-trip fare we recorded was $2390, in October. The typical fare was $3391. October was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $3216 on Discover Airlines, Air Canada, Lufthansa, Air Mauritius, Austrian, and United, seen Oct 27. It is an unverified observation and may have changed.
See every deal <a href="/from/st-louis">from St Louis</a>, <a href="/to/st-denis">to St Denis</a>, or the return direction <a href="/from/st-denis/to/st-louis">St Denis to St Louis</a>.
Latest price we saw: St Louis to St Denis
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 |
|---|---|---|---|---|---|---|
| St Louis (STL) to St Denis (RUN) | $3216 | 16.0¢ | Oct 29 – Nov 4 | Discover Airlines, Air Canada, Lufthansa, Air Mauritius, Austrian, and United | Oct 27 | Check price |
Price history: St Louis to St Denis
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $2390 | $3060 | 15 |
| Sep 2026 | $2426 | $3318 | 17 |
| Aug 2026 | $3104 | $3484 | 27 |
| Jul 2026 | $3703 | $3703 | 1 |
Frequently asked questions
How many flight deals from St Louis to St Denis are on Sparkflights right now?
There are 0 verified deals from St Louis to St Denis on the board right now. The list refreshes hourly.
What is the lowest price ever seen from St Louis to St Denis?
The lowest fare we've recorded from St Louis to St Denis is $2390, based on 60 price observations over 4 months.
How much does a flight from St Louis to St Denis cost?
The typical round-trip fare we observed from St Louis to St Denis is $3391, against a recorded low of $2390. These are observations, not quotes.
When is the cheapest month to fly St Louis to St Denis?
October was the cheapest month we observed from St Louis to St Denis and July the dearest, over 4 months of data.
What is the current price from St Louis to St Denis?
The most recent fare our sweep saw from St Louis to St Denis is $3216, on Oct 27. It is an unverified observation rather than a verified deal, so check it before booking.