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

Return flights

07 May - 24 May	Eurowings
11 May - 24 May	Aegean Airlines
04 May - 18 May	Eurowings
04 May - 25 May	Eurowings
09 May - 06 Jun	Eurowings
25 May - 01 Jun	Air India
15 May - 13 Jun	SWISS
01 May - 26 May	SWISS
02 May - 26 May	Air Serbia
09 May - 30 May	SWISS
01 May - 31 May	SWISS
21 May - 31 May	Eurowings
02 May - 16 May	Air Serbia
21 May - 06 Jun	Eurowings
23 May - 06 Jun	Air India
29 May - 07 Jun	LOT
18 May - 01 Jun	Eurowings
25 May - 22 Jun	Qatar Airways
14 May - 03 Jun	British Airways
06 May - 25 Jun	Qatar Airways

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 $743

Return flights