AirHint found the following cheapest return flights from London (STN) to Kathmandu (KTM) in May 2026 (see full year).

Return flights

11 May - 11 Jun	Ryanair
04 May - 04 Jun	Ryanair
12 May - 26 May	Ryanair
10 May - 23 May	Ryanair
09 May - 13 May	Ryanair
05 May - 05 Jun	Ryanair
10 May - 26 May	Ryanair
14 May - 02 Jun	Ryanair
04 May - 07 May	Ryanair
04 May - 19 May	Ryanair
04 May - 22 May	Ryanair
09 May - 18 May	Ryanair
02 May - 16 May	Ryanair
05 May - 19 May	Ryanair
14 May - 01 Jun	Ryanair
09 May - 01 Jun	Ryanair
01 May - 01 Jun	Turkish Airlines
23 May - 11 Jun	Ryanair
22 May - 07 Jun	Ryanair
02 May - 06 Jun	Emirates

Also check the deals for one-way flights from London to Kathmandu in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Kathmandu in May from 437€

Return flights