The cheapest London to Kathmandu return flight on the radar right now is £747, flying with China Southern + Air India via one or more connections. It covers departures in March 2027, and every dated link below opens that exact LHR–KTM search on Skyscanner. The price we usually record on this route is £645. Across 102 recorded checks it has ranged between £457 and £1,242. Our sampling points to March 2027 as the cheapest month to fly London to Kathmandu.

We do not post a price and leave it to age. Each fare is re-checked against Skyscanner on a schedule and carries the time it was last confirmed. Not flying from London? We track 62 other departure cities for Kathmandu, listed at the foot of this page.

Cheap fares do not hang around. If this one has already gone, nudge the dates either way by a day or two; London to Kathmandu is usually still decent value around the same window.