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

Return flights

05 May - 10 May	Thai AirAsia
05 May - 12 May	Thai AirAsia
19 May - 07 Jun	Thai AirAsia
21 May - 07 Jun	Thai AirAsia
05 May - 20 May	Thai AirAsia
25 May - 07 Jun	AirAsia
06 May - 10 May	AirAsia
06 May - 12 May	AirAsia
06 May - 20 May	AirAsia
18 May - 07 Jun	AirAsia
28 May - 07 Jun	AirAsia
18 May - 20 May	AirAsia
09 May - 12 May	Thai AirAsia
09 May - 20 May	Thai AirAsia
22 May - 07 Jun	AirAsia
05 May - 15 May	Thai AirAsia
25 May - 11 Jun	AirAsia
28 May - 11 Jun	AirAsia
22 May - 11 Jun	AirAsia
25 May - 13 Jun	AirAsia

Also check the deals for one-way flights from Bangkok to Sydney 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 Bangkok to Sydney in May from $543

Return flights