AirHint found the following cheapest return flights from Nantes (NTE) to Istanbul (IST) in September 2025 (see full year).

Return flights

26 Sep - 03 Oct	Transavia France	direct
29 Sep - 03 Oct	Transavia France	direct
11 Sep - 17 Sep	easyJet
20 Sep - 27 Sep	Ryanair
17 Sep - 22 Sep	Transavia France	direct
08 Sep - 10 Sep	Transavia France
02 Sep - 09 Sep	Transavia France
22 Sep - 26 Sep	Ryanair
22 Sep - 13 Oct	Transavia France	direct
01 Sep - 06 Sep	Transavia France
08 Sep - 10 Sep	Transavia France	direct
05 Sep - 08 Sep	Transavia France
29 Sep - 18 Oct	Vueling Airlines
03 Sep - 10 Sep	Vueling Airlines

Also check the deals for one-way flights from Nantes to Istanbul 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 Nantes to Istanbul in September from 154€

Return flights