AirHint found the following cheapest return flights from St.-denis (RUN) to Bangkok (BKK) in September 2025 (see full year).

Return flights

12 Sep - 18 Sep	Air Austral	direct
10 Sep - 02 Oct	Air Austral	direct
17 Sep - 02 Oct	Air Austral	direct
26 Sep - 02 Oct	Air Mauritius
19 Sep - 30 Sep	Air Mauritius
24 Sep - 16 Oct	Air Mauritius
19 Sep - 25 Sep	Air Mauritius
17 Sep - 22 Sep	FrenchBee
19 Sep - 26 Sep	Air Mauritius
19 Sep - 04 Oct	Air Austral	direct
24 Sep - 04 Oct	Air Mauritius
11 Sep - 18 Sep	Air Mauritius
18 Sep - 25 Sep	Air Mauritius
25 Sep - 01 Oct	Air Mauritius
10 Sep - 18 Sep	Air Mauritius
10 Sep - 01 Oct	Air Mauritius
11 Sep - 19 Sep	Air Mauritius
12 Sep - 20 Sep	Air Mauritius

Also check the deals for one-way flights from St.-denis 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 St.-denis to Bangkok in September from 826€

Return flights