The guide on what decides your aircraft covers the better-known restriction: runway length and width. That is what limits how many people fit.
There is another, less obvious and worse understood, which does not limit the size of the aircraft but the days on which you can fly.
The practical difference
A short runway is a booking problem: it is settled when you choose the aircraft, weeks ahead, and once settled it does not return.
The terrain around is a problem of the day: the aircraft is right, the group fits, everything is paid — and you still have to look at the sky that morning. Operation is subject to the weather minima applicable to the field and the aircraft.
The first is planned. The second is checked.
The five fields
Drake Bay — the pure runway case
Eleven metres wide. Here the runway governs, not the terrain, and we include it to mark the contrast: it is the opposite end of the list.
With six passengers or bulky baggage there may be no suitable aircraft. But if there is, the day matters less.
Golfito — the valley
Fourteen hundred metres by twenty: by size it restricts nothing.
The runway runs along a narrow valley, with high ground on both sides and immediately northwest of the threshold. That conditions weather minima far more than the length suggests.
Palmar Sur — the river and the mountain
Fourteen hundred by eighteen, also unrestricted by size.
Approach and departure to the north cross the Térraba river, with a mountain immediately north of the town and high ground from northwest through northeast.
It is the large field of the south, and even so its surroundings ask to be checked.
Punta Islita — the most enclosed
Eight hundred metres in a coastal valley, with rising terrain in every quadrant except the south, which is the ocean. The runway itself has a nine-metre rise.
It is the only one of the five where both restrictions meet: short runway and enclosed surroundings.
Nicoya — hills to the south and west
Nine hundred and sixty-five metres, with hills in two quadrants. Less severe than Islita, but enough that it is not a lowland field.
The specific aircraft is assigned on confirmation, based on passenger count, baggage and the destination field.
What to ask in each case
If your destination is one of these five, the conversation changes shape.
At a lowland field — Upala, Guápiles, Limón — it is enough to tell us how many you are and what you are carrying.
At these five you have to add how flexible your date is. Not because they are going to close, but because the chance of the day not cooperating is higher, and it is worth having a plan B before you need it.
And the alternatives are close
That is what makes the problem manageable: these fields have neighbours.
Palmar Sur is 17.3 nautical miles from Drake Bay and Golfito 27.5. Nicoya is 15.7 from Nosara and Punta Islita 18.2.
Arriving via the neighbour and covering the rest by land is almost always possible, and in several cases it is the catalogue's standard recommendation for large groups.
Frequently asked questions
Is a short runway the same as difficult terrain?
No. The runway limits the size of the aircraft and is settled at booking. The terrain limits the days of operation and is checked that morning. Operation is subject to the weather minima applicable to the field and the aircraft.
Which of the five is most demanding?
Punta Islita: the only one where a short runway and enclosed surroundings meet in every quadrant except the sea.
Was Drake Bay not the hardest?
By runway no: Drake is 18 m wide. But once the aircraft is settled, the day weighs less than at Golfito or Islita.
What should I say when asking for a quote?
At these five, besides how many you are and what you carry, how flexible your date is.
Is there an alternative if the day does not cooperate?
Almost always. Palmar Sur is 17.3 nautical miles from Drake and Golfito 27.5; Nicoya 15.7 from Nosara.
Does that make the flight more expensive?
Arriving via the neighbour changes the route and therefore the fare. Each route page sets out the comparison. The specific aircraft is assigned on confirmation, based on passenger count, baggage and the destination field.