The most popular way to trek to Everest these days is to trek to Everest Base Camp and then take a helicopter back. The trip is short; it takes only nine days. This is a good way for people who do not have much time to enjoy Everest trekking. So, the best thing to do is the Everest Base Camp Helicopter Return Trek. Everest base camp trek with helicopter return difficulty is moderate. The itinerary is 9 days long. You spend 7 full days in the mountains and return to Kathmandu in a helicopter on the last day of the trek. The trekking route gradually ascends to Kala Patthar (5,644 m/18,519 ft). Once you go above Dingboche (4,410 m/14,470 ft), the trail gets more remote and steep. The Everest base camp helicopter return trek is guided by expert mountain guides who assure the safety and success of the group.