Cheapest return flights from Sydney to Kathmandu in September from 709€

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

19 Sep - 29 Sep Singapore Airlines
03 Sep - 17 Sep Singapore Airlines
18 Sep - 23 Sep Singapore Airlines
03 Sep - 22 Sep Singapore Airlines
02 Sep - 20 Sep Singapore Airlines
01 Sep - 15 Oct Singapore Airlines
10 Sep - 24 Sep Malaysia Airlines
03 Sep - 20 Sep Malaysia Airlines
23 Sep - 24 Oct Qantas
15 Sep - 24 Oct Qantas
18 Sep - 25 Sep Singapore Airlines
24 Sep - 29 Oct Singapore Airlines
19 Sep - 17 Oct Singapore Airlines
25 Sep - 25 Oct Singapore Airlines
21 Sep - 24 Oct Singapore Airlines
18 Sep - 17 Oct Singapore Airlines
13 Sep - 11 Oct Singapore Airlines
29 Sep - 27 Oct Air India

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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