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

Return flights

08 Aug - 01 Sep	AirAsia
15 Aug - 22 Aug	AirAsia
15 Aug - 29 Aug	AirAsia
07 Aug - 21 Aug	Malaysia Airlines
09 Aug - 18 Aug	Malaysia Airlines
08 Aug - 18 Aug	Malaysia Airlines
16 Aug - 30 Aug	Malaysia Airlines
21 Aug - 15 Sep	Malaysia Airlines
22 Aug - 18 Sep	Singapore Airlines
21 Aug - 07 Sep	Emirates

Also check the deals for one-way flights from Perth 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 Perth to Kathmandu in August from 423€

Return flights