Cheapest return flights from Sydney to Kathmandu in September from $657

AirHint found the following cheapest return flights from Sydney (SYD) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

01 Sep - 29 Sep Scoot
13 Sep - 05 Oct AirAsia X
01 Sep - 18 Sep Singapore Airlines
01 Sep - 20 Sep Singapore Airlines
01 Sep - 30 Sep AirAsia X
23 Sep - 30 Sep Air India
15 Sep - 01 Oct Air India
01 Sep - 02 Oct Singapore Airlines
25 Sep - 06 Oct VietJet Air
20 Sep - 30 Sep Air India
24 Sep - 25 Sep Air India
24 Sep - 26 Sep Air India
27 Sep - 04 Oct Scoot
14 Sep - 14 Oct Cathay Pacific
15 Sep - 15 Oct Cathay Pacific
29 Sep - 08 Oct Air India
24 Sep - 22 Oct Air India
30 Sep - 27 Oct Cathay Pacific

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

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