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

Return flights

29 Sep - 21 Oct	Scoot
29 Sep - 24 Oct	Scoot
11 Sep - 17 Sep	Jetstar
09 Sep - 10 Sep	Jetstar
10 Sep - 14 Sep	Jetstar
27 Sep - 17 Oct	Scoot
11 Sep - 15 Sep	Jetstar
12 Sep - 13 Sep	Scoot
09 Sep - 13 Sep	Scoot
10 Sep - 18 Sep	Scoot
09 Sep - 17 Sep	Jetstar
30 Sep - 25 Oct	China Southern
09 Sep - 12 Sep	Jetstar	direct
09 Sep - 17 Sep	Jetstar	direct
28 Sep - 22 Oct	Royal Brunei
12 Sep - 21 Oct	Scoot
28 Sep - 18 Oct	China Southern
28 Sep - 20 Oct	China Southern
29 Sep - 30 Oct	Jetstar	direct
23 Sep - 31 Oct	Jetstar

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

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 September from $380

Return flights