Booking a Nepal Trek for October 2026: How Late Is Too Late?

Direct answer: if you want to fly into Lukla in the first half of October, you needed to have booked weeks ago — but October as a whole is not closed to new bookings. The crunch is narrower than it looks: one bottleneck airport, one two-week festival that pulls staff off the trail, and a lot of people chasing the same ten clear-sky weeks. Know which part of October you're aiming for, and 'too late' mostly stops being a real risk.

Start with the airport, because it's the real constraint, not the calendar. CAAN's rule of routing Lukla traffic via Ramechhap during peak season exists because, in the authority's own words, mountaineering-season traffic once ran to around 50 flights a day out of Kathmandu alone, 'which ultimately creates congestion.' Ramechhap's runway can only push through so many rotations before dawn winds close the mountain-flying window for the day, and once the daily quota is spoken for, it's gone — there's no overflow capacity to add. That's the mechanical reason booking early for October isn't just travel-agent pressure: for Everest-region treks (Everest Base Camp, Gokyo, the Three Passes) that depend on that flight, the seats for the first two weeks of October are under the most pressure, because they sit right before the Dashain travel spike compounds the same bottleneck with holiday traffic.

Layer Dashain on top and the picture sharpens further. October 11–25, 2026 is Nepal's biggest family holiday — comparable to Christmas or Lunar New Year in scale. It is genuinely wonderful to be in Nepal for it, but it also means some of the staff who run teahouses, portering services and trekking logistics are travelling to their home villages for tika, exactly when demand from foreign trekkers peaks. The result isn't that treks stop running — ours don't — but that lodges nearer the trailheads can be short-staffed or partially closed for a few days around October 20–21, and it's worth building slack into any itinerary that crosses that week rather than assuming full capacity.

The permit-restricted routes carry an extra reason to move early: Manaslu, Upper Mustang and Nar Phu all require special permits processed through a registered Nepali agency, and those take real working days to file — a rushed booking a week out doesn't just risk the flight, it risks the paperwork too.

If flexibility is on your side, the days right after Tika (from about October 22) hit a genuine sweet spot: the festival crush has passed, staff are back on the trail, and the weather is still squarely in its clearest stretch of the year. For the exact date-by-date breakdown of Dashain and Tihar and how they reshape a trek, see our full 2026 festival dates guide, and check permit lead times on our Nepal permits hub before you file. Our own 14-day Everest Base Camp Trek (from $1,350pp in a group of 8+, $1,850 for a solo trekker) and Manaslu Circuit Trek both have autumn 2026 slots still open outside the tightest first-half-October window.

Cover photo: Vyacheslav Argenberg via Wikimedia Commons (CC BY 4.0).