Cheapest return flights from Sydney to Kathmandu in September from $759

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

16 Sep - 30 Sep Air India
25 Sep - 12 Oct Air India
15 Sep - 31 Oct Air India
10 Sep - 31 Oct Air India
29 Sep - 20 Oct Air India
22 Sep - 26 Oct Air India
19 Sep - 08 Oct Air India
26 Sep - 03 Oct Air India
14 Sep - 30 Oct Air India
26 Sep - 26 Oct Air India
27 Sep - 24 Oct Qantas

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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