Cheapest return flights from Sydney to Kathmandu in September from $719

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

Return flights

07 Sep - 28 Sep Singapore Airlines
08 Sep - 15 Sep AirAsia X
28 Sep - 28 Oct Singapore Airlines
26 Sep - 30 Sep Air India
24 Sep - 23 Oct Singapore Airlines
12 Sep - 25 Sep Air India
30 Sep - 16 Oct Singapore Airlines
01 Sep - 01 Oct SriLankan Airlines
15 Sep - 06 Oct Cathay Pacific
18 Sep - 04 Oct Singapore Airlines
26 Sep - 13 Oct Air India
26 Sep - 11 Oct Cathay Pacific

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

Powered by

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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Feel free to contact us with any feedback or request another flight research.