How Far in Advance Should You Book a Nepal Trek?

The short answer: book two to three months ahead for an October or November trek, six to eight weeks ahead for spring (March–May), and two to three weeks ahead, often less, for winter or monsoon. Restricted areas such as Manaslu and Upper Mustang need an extra one to two weeks for permit paperwork, and Kailash needs 30–60 days for the Chinese permit chain regardless of season. That is the summary. The rest of this article explains why those numbers are what they are, and what to do if you have left it late.

I am Shreejan Simkhada, founder of The Everest Holiday, and after ten years of running treks from our office in Kathmandu, "how far in advance should I book?" is the question I answer on WhatsApp more than any other. It is a different question from "when should I go?", we have a separate guide on the best time to trek in Nepal for that. This article is purely about booking mechanics: flights, beds, permits and paperwork, and the real deadlines behind each one.

If you would rather skip the reading: message us on WhatsApp with your dates and group size, and we will tell you today what is still available. It takes us about ten minutes to check flights, rooms and permits against a real date. Everything below is what we check.

Why does an October or November trek need two to three months' notice?

Because two things sell out well before the trek itself does: Lukla flight seats and teahouse beds at bottleneck villages. Neither of these is under any trekking company's control, and both run out earlier every year.

First, the flights. In peak season, Lukla flights do not leave from Kathmandu at all. They operate from Manthali Airport in Ramechhap, a four-to-five-hour drive from the city, and the airlines run a limited number of small STOL aircraft on a weather window that usually closes by late morning. Airlines release seats in blocks, group operators reserve them early, and by six weeks out the good morning slots on popular dates are gone. Later slots carry a higher chance of weather cancellation, which then eats into your buffer days. When we confirm an Everest Base Camp trek two or three months ahead, we lock the earliest flight slots we can get. When someone books three weeks before a mid-October departure, we are choosing from what is left.

Second, the beds. On the Everest trail in October, villages like Lobuche and Gorak Shep have a fixed number of rooms and five hundred or more trekkers passing through each day. On the Annapurna side it is the same story at Chhomrong, Deurali and Machhapuchhre Base Camp, where the lodges are few and the sanctuary corridor gives you no alternative village to fall back on. Independent trekkers arriving mid-afternoon in peak October regularly find every room taken and end up sleeping in dining halls. Our guides pre-book rooms along the whole route, but lodge owners honour early reservations first. A booking made in July for October gets confirmed rooms; a booking made in late September gets whatever our guides can negotiate.

How early should I book a spring trek (March to May)?

Six to eight weeks is comfortable for spring. The season is genuinely busy, it is the second-best weather window of the year and the rhododendron forests below 3,500 m are the draw, but the crowds are thinner than autumn and the pressure on beds is lower.

The Lukla constraint still applies, though: March to May flights also operate from Ramechhap, and Everest expedition season means climbing teams are moving a lot of cargo and staff through the same small airport. Eight weeks ahead gets you good flight slots without difficulty. Four weeks ahead is usually still workable in spring, but you lose choice on departure dates and may need to shift a day or two either side.

For Annapurna treks in spring, the calculation is easier because there is no flight to fight over, everything starts by road from Pokhara. Six weeks is plenty for the Annapurna Base Camp trek, and even four weeks rarely causes problems outside the Easter holiday fortnight, when European bookings cluster.

Can I book a winter or monsoon trek at short notice?

Yes. Two to three weeks is enough, and genuinely last-minute bookings, a few days out, are often possible. This is the quiet half of the year, and the constraints that force early booking in October simply are not there.

In winter (December to February), Lukla flights return to Kathmandu airport, seats are available on short notice, and teahouses that were turning people away in October are half empty. The trails are cold and the nights at altitude are properly harsh, but the skies are clear and you will have viewpoints to yourself. In monsoon (June to August), the classic routes are largely off the table because of rain and cancelled flights, but the rain-shadow regions behind the Himalaya — Upper Mustang in particular, are at their best, and they can be arranged quickly.

We keep a live list of departures with confirmed guides and remaining spaces on our last-minute departures page. If your dates are inside the next month, start there, then message us to confirm the space is still open.

How much extra time do restricted areas need?

Add one to two weeks on top of the seasonal lead times above for Manaslu and Upper Mustang. For Kailash, plan 30–60 days minimum, whatever the season.

Restricted-area permits cannot be bought at a counter by the trekker. They are issued through a registered agency with a licensed guide (since March 2026 even solo trekkers can apply, though the agency and guide remain mandatory), and they need your passport and Nepal visa details submitted in advance. The permit itself is issued in Kathmandu in a day or two once your documents are in order, but the paperwork chain, collecting clean passport scans from everyone in the group, matching visa dates to permit dates, correcting errors, is what takes the time. For the Manaslu Circuit and Upper Mustang, we ask for documents two weeks before departure and that gives everyone a calm margin.

Kailash is a different animal entirely, because it sits in Tibet and the permits are Chinese, not Nepali. A Kailash trip needs a Tibet Travel Permit, a Chinese group visa, and additional travel permits for western Tibet, processed in sequence. We submit applications around 45 days before departure, and the approvals come back in stages over the following month. That is why we tell people 30–60 days is the floor for the Kailash Mansarovar tour, and two to three months is the sensible target. No agency in Kathmandu can compress the Chinese side of that timeline, whatever they promise you.

What happens to bookings around Dashain and Tihar?

The two big festivals fall in the middle of peak trekking season, and they squeeze transport and staffing for about three weeks. If your trek overlaps them, book at the early end of the two-to-three-month window.

In 2026, Dashain runs from 11 to 21 October, with the main Tika day on 21 October, and Tihar follows from 7 to 11 November. These are Nepal's biggest family holidays: a large share of the country travels home, domestic flights and long-distance jeeps fill with Nepali families rather than trekkers, and prices on road transport rise. Guides and porters, ours included, want time with their families, so staff rosters are set well in advance and late bookings get whoever is left rather than whoever is best.

To be clear, trekking during the festivals is lovely. The trails are quieter because fewer Nepalis are working, the villages are celebrating, and being invited to a Tika blessing in a lodge is a memory people keep. The festivals are a reason to book earlier, not a reason to stay away.

What does booking early actually buy you?

Better people, better flights and better rooms. The trek itself costs the same; what changes is the quality of everything around it. Here is what we can do with a booking made three months out that we cannot do with one made three weeks out:

• Guide assignment. Our most senior guides, the ones with fifteen Everest seasons, strong English and wilderness first-aid training, are assigned to confirmed bookings in order. Early bookers get first pick. This matters more than most people realise, because your guide is the single biggest variable in how your trek goes.
• Flight class and slot. First-wave morning flights out of Ramechhap have the highest completion rate. Book late and you are on the afternoon list, where one bank of cloud cancels your day.
• Rooms at the bottlenecks. At Chhomrong and Machhapuchhre Base Camp on the Annapurna side, at Gorak Shep on the Everest side, and at Dharamsala on the Manaslu Circuit, a spot with roughly forty proper beds and tents for the overflow, early reservations get rooms and late arrivals get floor space. In Namche, early booking is the difference between a room with an attached bathroom and one without.
• Group discount seats. Our group departures are priced by size. Booking early gets you into a group that is already forming; booking late can mean paying a private-departure rate for the same dates.
• Time to train. Not a booking mechanic, but real: people who book three months out follow a training plan and enjoy the trek. People who book ten days out arrive with whatever fitness they happen to have.

One more practical point: confirming early does not mean paying everything early. A 10% deposit confirms your booking with us, locks your flight seats and rooms, and the balance is settled later. The deposit is the trigger for everything above.

Booked too late? What is still possible at two weeks, one week, or on arrival?

More than you might fear, less than you might hope, and it depends heavily on which trek and which month.

At two weeks out: in winter, monsoon or the shoulder months, almost everything is still on the table, including Everest Base Camp. In peak October, classic EBC becomes awkward: flight seats are the choke point, and we may propose the road route via Salleri, which removes the Lukla flight entirely and acclimatises you better on the way in. Annapurna treks are usually still fine at two weeks even in peak season, because there is no flight and the permit is not restricted. Manaslu at two weeks is possible only if your documents are ready the day you confirm.

At one week out: peak-season EBC by air is realistically gone unless a cancellation opens seats. What works at one week: Annapurna Base Camp, the Annapurna Circuit, Poon Hill and Mardi Himal, all road-accessed, all with standard permits we can arrange in a day. Private departures are the tool here, because we are no longer trying to slot you into an existing group.

On arrival in Kathmandu: yes, people walk into our office and trek three days later, and outside peak season it works well. Standard permits are issued same-day. The honest limits: no Kailash (the Chinese permits make it impossible), no realistic peak-October EBC by air, and restricted areas only if you are a pair and willing to wait a few days for the permit. Everything else is a conversation. If you are already in Thamel reading this, check the last-minute departures page and come see us.

Lead-time table: how far ahead to book, by trek and season

Trek	Peak (Oct–Nov)	Spring (Mar–May)	Winter (Dec–Feb)	Monsoon (Jun–Aug)
Everest Base Camp (classic, via Lukla)	2–3 months	6–8 weeks	2–3 weeks	Not recommended
Everest Base Camp by Road	4–6 weeks	4 weeks	2 weeks	Not recommended
Annapurna Base Camp	6–8 weeks	4–6 weeks	1–2 weeks	Not recommended
Annapurna Circuit (with Tilicho)	6–8 weeks	6 weeks	2–3 weeks (pass conditions permitting)	Not recommended
Poon Hill / Mardi Himal	3–4 weeks	2–3 weeks	1 week or on arrival	Possible, 1 week
Manaslu Circuit (restricted)	2–3 months + documents 2 weeks ahead	6–8 weeks + documents 2 weeks ahead	3–4 weeks	Not recommended
Upper Mustang (restricted)	6–8 weeks + documents 2 weeks ahead	6 weeks + documents 2 weeks ahead	4 weeks	Best season — 3–4 weeks
Kailash Mansarovar (Tibet)	2–3 months (30–60 days absolute minimum)	2–3 months	Closed	2–3 months

Treat the table as the planning answer and the sections above as the reasons. If your dates fall near Dashain (11–21 October 2026) or Tihar (7–11 November 2026), move to the early end of whichever range applies.

What should you do next?

Decide your rough dates, then let us check them against reality. Send us your dates on WhatsApp and we will tell you today what is still available: which flights, which rooms, which guides, and whether your timeline needs the road route, a private departure or no adjustment at all. There is no obligation attached to asking, and it is a far quicker way to get a real answer than reading ten more articles like this one.