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

Return flights

02 Apr - 09 May	Vueling Airlines
02 Apr - 31 May	Vueling Airlines
02 Apr - 18 Apr	Vueling Airlines
15 Apr - 26 Apr	Air India
21 Apr - 26 Apr	Air India
27 Apr - 22 May	SWISS
13 Apr - 20 Apr	Air India
09 Apr - 20 Apr	Air India
20 Apr - 29 Apr	Air India
09 Apr - 29 Apr	KLM
09 Apr - 05 May	KLM
15 Apr - 19 Apr	Finnair
17 Apr - 08 May	Aegean Airlines
17 Apr - 27 Apr	Aegean Airlines
17 Apr - 25 Apr	LOT
17 Apr - 09 May	Aegean Airlines
11 Apr - 05 May	LOT
20 Apr - 08 May	LOT
24 Apr - 03 May	Finnair
24 Apr - 01 May	Finnair

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

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 April from 546€

Return flights