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

Return flights

11 May - 28 May	Air India
10 May - 09 Jun	Air India
11 May - 22 May	Air India
26 May - 07 Jun	Air India
20 May - 03 Jun	Air India
29 May - 14 Jun	Air India
15 May - 02 Jun	Air India
27 May - 17 Jun	Air India
07 May - 22 May	Air India
08 May - 17 May	Air India
18 May - 08 Jun	Air India
11 May - 15 Jun	Air India
15 May - 05 Jun	Air India
12 May - 13 Jun	Malaysia Airlines
05 May - 12 May	Malaysia Airlines
03 May - 29 May	Malaysia Airlines
02 May - 24 May	Malaysia Airlines
01 May - 30 May	Malaysia Airlines
01 May - 31 May	Air India
15 May - 24 May	China Southern

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

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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Cheapest return flights from Sydney to Kathmandu in May from 479€

Return flights