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

Return flights

25 Sep - 26 Oct	Wizz Air Malta
14 Sep - 31 Oct	Wizz Air Malta
13 Sep - 31 Oct	Wizz Air Malta
16 Sep - 31 Oct	Wizz Air Malta
21 Sep - 31 Oct	Wizz Air Malta
15 Sep - 22 Sep	Air China
14 Sep - 21 Sep	Air China
16 Sep - 23 Sep	Air China
17 Sep - 24 Sep	Air China
10 Sep - 17 Sep	Air China
12 Sep - 19 Sep	Air China
02 Sep - 09 Sep	Air China
09 Sep - 16 Sep	Air China
01 Sep - 08 Sep	Air China
11 Sep - 18 Sep	Air China
23 Sep - 27 Oct	Wizz Air Malta
18 Sep - 04 Oct	Air China
16 Sep - 14 Oct	Air China
17 Sep - 14 Oct	Air China
18 Sep - 13 Oct	Air China

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 $467

Return flights