AirHint found the following cheapest return flights from London (LCY) to Kathmandu (KTM) in August 2025 (see full year).

Return flights

25 Aug - 09 Sep	KLM
28 Aug - 11 Sep	KLM
19 Aug - 09 Sep	KLM
26 Aug - 26 Sep	KLM
25 Aug - 26 Sep	KLM
28 Aug - 26 Sep	KLM
19 Aug - 30 Sep	ITA Airways
25 Aug - 13 Sep	KLM
30 Aug - 26 Sep	KLM
19 Aug - 18 Sep	ITA Airways
21 Aug - 31 Aug	KLM
28 Aug - 31 Aug	KLM
25 Aug - 30 Aug	KLM
20 Aug - 31 Aug	KLM
19 Aug - 26 Aug	KLM
19 Aug - 30 Aug	KLM
18 Aug - 24 Aug	KLM
20 Aug - 26 Aug	British Airways
16 Aug - 30 Aug	SWISS
17 Aug - 24 Aug	ITA Airways

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

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 August from 651€

Return flights