Cheapest one-way flights from Sydney to Kathmandu in September from $402

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

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

One-Way flights

07 Sep Malaysia Airlines
11 Sep China Southern
02 Sep Thai Airways
15 Sep Cathay Pacific
05 Sep Qantas
06 Sep Qantas
14 Sep Qantas
12 Sep Cathay Pacific
13 Sep Cathay Pacific
22 Sep IndiGo

Also check the deals for return 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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu