Lhotse Expedition

Spring (April to May) is the only reliable season for a Lhotse summit attempt, driven by the jet stream lifting off the summit for a narrow window, typically in mid-May, before the summer monsoon arrives in late May or early June. The expedition begins in late March or early April to allow a full acclimatisation rotation through April before the summit push in May.

Autumn (late September to October) sees some attempts but conditions are less stable than spring, the post-monsoon snowfall is heavier, and the route above 7,000 m is more dangerous. Winter and summer are not viable: winter temperatures at 8,516 m reach minus 40 C and below, and the monsoon brings heavy snowfall and avalanche risk. The spring season aligns with Everest permit season, sharing Base Camp infrastructure and fixed-line teams.

A Nepal climbing permit (royalty) for Lhotse is required from the Department of Immigration and the Ministry of Tourism. The royalty fee is approximately USD 1,800 per person in the spring season, one of the more accessible royalties among the 8,000 m peaks. The expedition agency submits the application with passport copies and expedition details; Swotah handles this on your behalf once documents are provided.

Additional permits include the Sagarmatha National Park entrance fee (approximately USD 30 per person), the Khumbu Pasang Lhamu Rural Municipality climbing fee (approximately NPR 2,000 per person), and the liaison officer fee required by Nepal for all 8,000 m expeditions. A Trekking Information Management System (TIMS) card is also needed for the approach. Swotah confirms all current fees before departure as government rates are subject to change.

Kathmandu nights are in a comfortable hotel. The Khumbu approach from Lukla to Base Camp uses standard teahouse lodges in Phakding, Namche Bazaar, Tengboche, and Dingboche, providing a progressive altitude gain with acclimatisation built in. Namche (3,440 m) is the last point with reliable internet and ATMs, and the acclimatisation day here is important.

Above Base Camp (5,364 m), accommodation is in tented high camps established and equipped by the expedition team. Camp 1 sits at approximately 6,100 m above the Khumbu Icefall, Camp 2 is in the Western Cwm at approximately 6,400 m, Camp 3 is on the Lhotse Face at approximately 7,200 m, and Camp 4 is at approximately 7,800 m near the Geneva Spur. Each camp is stocked with food, fuel and oxygen during rotation carries. A base camp cook team provides full meals and hot drinks.

At Base Camp, the Swotah cook team provides three full meals a day plus snacks and unlimited hot drinks. Dal bhat, pasta, rice dishes and high-protein meals are the staples, with fresh vegetables sourced from Namche through the early expedition period. Acclimatisation days at Base Camp are rest and nutrition days, and caloric intake at this altitude is taken seriously.

Above Camp 2, food is pre-packed energy foods, bars, dehydrated meals, soup and hot drinks from a gas stove. Water at high camps comes from melted snow and ice. Dehydration accelerates altitude sickness, so drinking 4 to 5 litres per day is the target from Base Camp upward. Purification tablets or a filter cover any water sourced on the trek approach; above Base Camp, all water is boiled or from certified supplies.

The expedition begins in Kathmandu and flies to Lukla (2,860 m) on a 35-minute domestic flight operated by Tara Air or Summit Air. Lukla's Tenzing-Hillary Airport is at 2,860 m and subject to weather delays, so the schedule builds buffer days. From Lukla, the standard Khumbu trekking route leads through Phakding, Namche Bazaar, Tengboche and Dingboche to Base Camp over approximately 8 trekking days.

Kathmandu is served by international airlines from across Asia, Europe and the Middle East, with Tribhuvan International Airport (KTM) as the entry point. Most climbers arrive 1 to 2 days before the expedition briefing to allow for gear sorting, permit verification and the Kathmandu Mountaineering Association registration. Swotah arranges airport transfers, hotel, the Lukla flight booking and all ground logistics.

The Lhotse Couloir is the defining feature of the standard route above 8,000 m: a steep, narrow gully of hard blue ice and snow averaging 50 to 55 degrees, with the summit pyramid rising to 8,516 m. Fixed ropes are placed by Sherpa teams in late April and maintained through the season; ascending without them is not attempted on a commercial expedition. The couloir begins at the top of the Lhotse Face above Camp 4 (~7,800 m) and requires frontpointing with crampons and controlled jumar technique.

The shared route with Everest follows the Khumbu Icefall from Base Camp (5,364 m) to Camp 1 at ~6,100 m: a broken glacier section with seracs, crevasses and ladders that is the most objectively dangerous part of the climb and is usually crossed in the early hours. The Western Cwm (6,100 to 6,400 m) is a high, flat glacier bowl between Everest, Nuptse and Lhotse. The Lhotse Face (6,400 to 7,800 m) is a sustained 40-degree ice face where the routes for Everest and Lhotse share the fixed lines until the Geneva Spur, where Lhotse climbers bear right into the couloir.

Acclimatisation on a Lhotse expedition runs on the classic climb-high, sleep-low rotation. The first rotation typically reaches Camp 1 or Camp 2 and returns to Base Camp. The second rotation pushes to Camp 3 (7,200 m) and returns. Several rest days at Base Camp follow before the summit push, which is triggered when a reliable weather window appears, usually in the second or third week of May.

Summit day starts from Camp 4 (~7,800 m) at around midnight to 1 a.m. with headlamps and supplemental oxygen. The climb gains approximately 700 m of altitude over 5 to 7 hours to the summit at 8,516 m. The descent must be completed in daylight to safely navigate the Lhotse Couloir and the Lhotse Face. Oxygen flow rates are managed by the Sherpa team, and turnaround time is strictly enforced regardless of proximity to the summit. All climbers carry dexamethasone and nifedipine as emergency medications above 7,000 m.

The Swotah Lhotse Expedition includes a licensed expedition leader, high-altitude Sherpa climbing guides certified by the Nepal Mountaineering Association, and a base camp cook team. Sherpa guides carry supplemental oxygen and emergency equipment on summit day and fix the high camps and ropes through the Khumbu Icefall and up the Lhotse Face through April.

A ratio of one Sherpa to one client is standard for the Lhotse Couloir section and summit push; Sherpa teams also carry loads between camps during the acclimatisation rotations, reducing client load-carry demands and preserving energy for altitude gain. A base camp manager handles logistics, weather forecasts (provided by MeteoBlue and other services), permit checking and liaison officer coordination. All Sherpa staff are insured under Nepal expedition insurance regulations.

Responsible expedition practice in the Khumbu includes strict waste management: all non-organic waste must be carried out from high camps, human waste at Base Camp is managed through the Khumbu Climbing Center's waste management system, and single-use plastics are minimised. The Sagarmatha Pollution Control Committee (SPCC) manages Base Camp waste regulations, and Swotah expeditions comply fully with their requirements.

Tipping is customary for expedition staff: a standard guideline is USD 500 per client for the lead Sherpa and USD 200 to 300 for supporting Sherpas, with smaller amounts for the cook team and assistants, but this varies and Swotah provides a suggested tipping table with your expedition briefing pack. Booking through a registered operator ensures Sherpa insurance, fair pay according to the Nepal Mountaineering Association rate card, and proper permit handling.