Cheapest return flights from Sydney to Kathmandu in September from $665

Best time to book flights for Sydney (SYD) to Kathmandu (KTM) flights at AirHint

AirHint found the following cheapest return flights from Sydney (SYD) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

22 Sep - 31 Oct Scoot Tigerair
10 Sep - 20 Oct Malaysia Airlines
11 Sep - 18 Sep Qantas
08 Sep - 22 Sep Qantas
11 Sep - 17 Oct Qantas
03 Sep - 10 Oct Malaysia Airlines
03 Sep - 08 Oct Air India
22 Sep - 13 Oct Qantas
10 Sep - 24 Sep Singapore Airlines
04 Sep - 16 Oct Air India
16 Sep - 15 Oct Malaysia Airlines
26 Sep - 31 Oct Scoot Tigerair
22 Sep - 25 Sep Qantas
22 Sep - 20 Oct Malaysia Airlines
26 Sep - 28 Sep Air India
11 Sep - 30 Sep China Southern

Also check the deals for one-way flights from Sydney to Kathmandu in September.

Skyscanner

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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