AirHint found the following cheapest return flights from Rome (ROM) to Bangkok (BKK) in September 2026 (see full year).

Return flights

17 Sep - 30 Sep	SWISS
15 Sep - 30 Sep	SWISS
15 Sep - 13 Oct	SWISS
15 Sep - 14 Oct	SWISS
15 Sep - 05 Oct	SWISS
03 Sep - 21 Sep	SWISS
08 Sep - 21 Sep	SWISS
15 Sep - 21 Sep	SWISS
17 Sep - 29 Sep	SWISS
15 Sep - 27 Sep	SWISS
14 Sep - 22 Sep	Austrian Airlines
23 Sep - 05 Oct	Austrian Airlines
16 Sep - 25 Sep	SWISS
01 Sep - 14 Sep	SWISS
20 Sep - 02 Oct	Etihad Airways
29 Sep - 09 Oct	Etihad Airways
22 Sep - 01 Oct	Etihad Airways
27 Sep - 09 Oct	Oman Air
26 Sep - 08 Oct	Wizz Air Malta
20 Sep - 16 Oct	Oman Air

Also check the deals for one-way flights from Rome 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 Rome to Bangkok in September from $566

Return flights