Shared seat or whole helicopter: the number where it flips

Every Everest enquiry arrives with the same fork in it. Buy a seat and share the aircraft with strangers, or take the whole helicopter. The aircraft, the route and the view are identical either way, so the decision is arithmetic plus one thing arithmetic cannot price.

A shared seat on the Everest Base Camp tour runs roughly US$500 to US$575. The whole five-seat aircraft runs roughly US$3,800 to US$4,500 — about seven and a half times one seat, for five places.

So the crossover is between four and five passengers. At four you are paying a premium of a few hundred dollars over four seats. At five you are close to level, and you have bought control of the day.

Below three, chartering is a luxury purchase and should be described as one. Two people paying $4,000 for a $1,100 journey are buying privacy, not transport.

Departure time. A shared flight leaves when the seats are full and the slot is confirmed; a charter leaves when you and the weather agree. In a business where the valley shuts by late morning, that is the difference between flying today and joining tomorrow's queue.

It also buys the itinerary. Charters can add a landing, extend the ground time at Kala Patthar, or divert for a photograph. A shared seat is a fixed product for good reasons — four other people bought the same one.

A shared seat needs the other seats to sell. In October they sell the same day; in June they may not sell at all, and a flight that does not fill is a flight that does not go.

If your dates are tight and the season is quiet, a charter is not the extravagant option — it is the only one that departs.

Count your group. Five or four with a fixed date, charter. Three or fewer with flexible dates, share. Two with a fixed date in low season, price both and accept that sharing may not fly.

Then compare totals rather than headlines, because some operators quote before permits and landing fees, and that gap is wider on a charter than on a seat.