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

Return flights

09 Sep - 16 Sep	Air France
05 Sep - 21 Sep	Air France
04 Sep - 09 Sep	Air France
11 Sep - 22 Sep	Air France
13 Sep - 20 Sep	Air France
13 Sep - 29 Sep	Air France
11 Sep - 25 Sep	Air France
11 Sep - 17 Sep	Air France
11 Sep - 05 Oct	Air France
26 Sep - 05 Oct	Air France
02 Sep - 07 Sep	Air France
15 Sep - 26 Sep	Air France
29 Sep - 20 Oct	Air France
24 Sep - 01 Oct	Air France
29 Sep - 05 Oct	Air France
27 Sep - 06 Oct	Air France

Also check the deals for one-way flights from Lyon to St.-denis 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 Lyon to St.-denis in September from 843€

Return flights