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

Return flights

23 May - 10 Jun	Thai AirAsia
23 May - 09 Jun	Thai AirAsia
19 May - 09 Jun	AirAsia
22 May - 10 Jun	Thai AirAsia
22 May - 09 Jun	Thai AirAsia
25 May - 10 Jun	AirAsia
25 May - 09 Jun	AirAsia
14 May - 18 May	Thai AirAsia
12 May - 18 May	Thai AirAsia
09 May - 18 May	Thai AirAsia
09 May - 12 May	Thai AirAsia
08 May - 18 May	Thai AirAsia
08 May - 12 May	Thai AirAsia
15 May - 18 May	Thai AirAsia
07 May - 18 May	Thai AirAsia
07 May - 12 May	Thai AirAsia
01 May - 18 May	Thai AirAsia
23 May - 05 Jun	Thai AirAsia
19 May - 05 Jun	AirAsia
22 May - 05 Jun	Thai AirAsia

Also check the deals for one-way flights from Bangkok to Perth 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 Perth in May from $343

Return flights