AirHint found the following cheapest return flights from Sydney (SYD) to Colombo (CMB) in October 2025 (see full year).

Return flights

28 Oct - 28 Nov	AirAsia X
18 Oct - 18 Nov	AirAsia X
28 Oct - 07 Nov	AirAsia X
18 Oct - 08 Nov	AirAsia X
21 Oct - 02 Nov	AirAsia X
26 Oct - 07 Nov	AirAsia X
31 Oct - 08 Nov	AirAsia X
19 Oct - 07 Nov	AirAsia X
18 Oct - 07 Nov	AirAsia X
29 Oct - 08 Nov	AirAsia X
21 Oct - 28 Oct	AirAsia X
22 Oct - 29 Oct	AirAsia X
24 Oct - 28 Oct	VietJet Air
22 Oct - 27 Oct	VietJet Air
24 Oct - 29 Oct	Scoot
26 Oct - 31 Oct	AirAsia X
25 Oct - 30 Oct	AirAsia X
27 Oct - 30 Oct	AirAsia X
18 Oct - 31 Oct	AirAsia X
23 Oct - 29 Oct	AirAsia X

Also check the deals for one-way flights from Sydney to Colombo in October.

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 Colombo in October from 396€

Return flights