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

Return flights

21 May - 27 May	AirAsia
20 May - 25 May	Thai AirAsia
01 May - 06 May	AirAsia
07 May - 17 May	AirAsia
01 May - 09 May	AirAsia
01 May - 08 May	AirAsia
26 May - 06 Jun	Thai AirAsia
27 May - 03 Jun	Thai AirAsia
10 May - 17 May	Thai AirAsia
21 May - 04 Jun	Thai AirAsia
05 May - 12 May	Thai AirAsia
11 May - 24 May	Thai AirAsia
10 May - 22 May	Thai AirAsia
31 May - 08 Jun	Thai AirAsia
28 May - 01 Jun	Thai AirAsia
29 May - 02 Jun	Thai AirAsia
23 May - 05 Jun	Thai 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 $430

Return flights