AirHint found the following cheapest return flights from Melbourne (MEL) to Bangkok (BKK) in December 2025 (see full year).

Return flights

29 Dec - 01 Jan	Virgin Australia
30 Dec - 06 Jan	Jetstar
31 Dec - 30 Jan	Jetstar
27 Dec - 01 Jan	Garuda Indonesia
31 Dec - 01 Jan	Jetstar	direct
30 Dec - 05 Jan	Jetstar	direct
31 Dec - 05 Jan	Jetstar	direct
31 Dec - 15 Jan	Jetstar	direct
31 Dec - 29 Jan	Jetstar	direct
31 Dec - 07 Jan	China Eastern
29 Dec - 31 Dec	Jetstar
28 Dec - 31 Dec	AirAsia X
27 Dec - 30 Dec	AirAsia X
27 Dec - 31 Dec	AirAsia X
31 Dec - 31 Dec	Qantas
28 Dec - 31 Dec	Jetstar	direct
31 Dec - 31 Dec	Thai Airways	direct
27 Dec - 29 Dec	Scoot
29 Dec - 31 Dec	Thai Airways	direct

Also check the deals for one-way flights from Melbourne to Bangkok in December.

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 Melbourne to Bangkok in December from 594€

Return flights