La Môle.
Three facts decide everything here
The runway is 1,180 m. The weight category is ACN under 21. There is no runway lighting. Between them those three lines rule out most of what people expect to arrive on, and they are not negotiable at any price.
What fits is short-field light jets and turboprops. Our published lane is London to St Tropez, 1h43, and the aircraft we quote for it are chosen against the runway before they are chosen against the passenger count. If the group is too large for that list, La Mole stops being an option and the answer is Nice.
Daylight only, and what that costs you
The lack of lighting is the constraint people underestimate. It is not a curfew that can be bought out with an overtime fee. Once the light goes, the field is shut, and a delay upstream that would cost you twenty minutes anywhere else diverts you to Nice instead.
Sky Valet runs the handling and posts summer hours of 08:00 to 19:00, winter 09:00 to 17:00. We plan late-afternoon August arrivals with that margin in mind rather than against the published closing time.
Getting to the town
Saint-Tropez is 15 km away, roughly 25 minutes by road outside the season. In August the peninsula has one usable approach and that number stops meaning anything, which is why several of our clients land at Nice and take the helicopter across in about twenty minutes instead.
The helicopter option is the same jet-to-rotor coordination we run for Monaco arrivals. It is worth pricing both ways before assuming the closer airport is the faster trip.