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

Return flights

05 May - 26 May	Air India
12 May - 26 May	Air India
14 May - 28 May	Air India
28 May - 18 Jun	Air India
15 May - 06 Jun	Air India
13 May - 30 May	Air India
12 May - 29 May	Air India
12 May - 30 May	Air India
14 May - 29 May	Air India
06 May - 26 May	Air India
11 May - 24 May	Air India
15 May - 11 Jun	Air India
29 May - 20 Jun	Air India
25 May - 04 Jun	Air India
05 May - 05 Jun	Air India
05 May - 07 Jun	Air India
14 May - 11 Jun	Malaysia Airlines
10 May - 12 Jun	Malaysia Airlines
01 May - 23 May	Air India
01 May - 10 Jun	Air India

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 $585

Return flights