AirHint found the following cheapest return flights from Montpellier (MPL) to Lille (LIL) in September 2025 (see full year).

Return flights

12 Sep - 26 Sep	Volotea	direct
08 Sep - 26 Sep	Volotea	direct
19 Sep - 26 Sep	Volotea	direct
15 Sep - 26 Sep	Volotea	direct
12 Sep - 29 Sep	Volotea	direct
12 Sep - 15 Sep	Volotea	direct
08 Sep - 15 Sep	Volotea	direct
22 Sep - 26 Sep	Volotea	direct
05 Sep - 26 Sep	Volotea	direct
19 Sep - 29 Sep	Volotea	direct

Also check the deals for one-way flights from Montpellier to Lille 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 Montpellier to Lille in September from $101

Return flights