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

Return flights

24 Aug - 24 Sep	IndiGo
27 Aug - 03 Sep	Etihad Airways
25 Aug - 29 Sep	Qatar Airways
31 Aug - 30 Sep	Wizz Air
25 Aug - 25 Sep	Qatar Airways
16 Aug - 15 Sep	Ryanair
13 Aug - 15 Sep	Wizz Air
20 Aug - 11 Sep	Wizz Air
18 Aug - 15 Sep	TAP
21 Aug - 23 Sep	Qatar Airways
24 Aug - 31 Aug	IndiGo
23 Aug - 30 Aug	Ryanair
18 Aug - 26 Aug	Wizz Air
17 Aug - 24 Aug	Wizz Air
17 Aug - 31 Aug	Wizz Air
18 Aug - 25 Aug	Air France
27 Aug - 31 Aug	Etihad Airways
16 Aug - 23 Aug	IndiGo
25 Aug - 30 Aug	Qatar Airways
20 Aug - 27 Aug	Qatar Airways

Also check the deals for one-way flights from Lisbon 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 Lisbon to Kathmandu in August from 683€

Return flights