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

Return flights

19 Sep - 26 Sep	Saudia
05 Sep - 10 Sep	Saudia
05 Sep - 12 Sep	Saudia
23 Sep - 01 Oct	Saudia
07 Sep - 16 Sep	Saudia
10 Sep - 17 Sep	Saudia
12 Sep - 19 Sep	Saudia
22 Sep - 29 Sep	Saudia
23 Sep - 30 Sep	Saudia
12 Sep - 18 Sep	Saudia
10 Sep - 12 Sep	Saudia
24 Sep - 01 Oct	Saudia
25 Sep - 02 Oct	Saudia
26 Sep - 03 Oct	Saudia
29 Sep - 06 Oct	Saudia
30 Sep - 07 Oct	Saudia
26 Sep - 29 Oct	AJet
24 Sep - 29 Oct	AJet
26 Sep - 02 Oct	Saudia
23 Sep - 07 Oct	Saudia

Also check the deals for one-way flights from Paris 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 Paris to Bangkok in September from $521

Return flights