AirHint found the following cheapest return flights from Paris (CDG) to Istanbul (IST) in December 2025 (see full year).

Return flights

18 Dec - 12 Jan	Vueling Airlines
31 Dec - 15 Jan	AJet
04 Dec - 15 Dec	AJet	direct
05 Dec - 08 Dec	AJet	direct
04 Dec - 08 Dec	AJet	direct
04 Dec - 14 Dec	AJet	direct
06 Dec - 14 Dec	AJet	direct
04 Dec - 11 Dec	AJet
29 Dec - 27 Jan	AJet
04 Dec - 10 Dec	easyJet
12 Dec - 15 Dec	AJet	direct
12 Dec - 22 Dec	AJet	direct
05 Dec - 15 Dec	AJet	direct
29 Dec - 18 Jan	AJet	direct
04 Dec - 10 Jan	AJet	direct
15 Dec - 27 Jan	Air France	direct
31 Dec - 07 Jan	AJet	direct
13 Dec - 31 Jan	easyJet
29 Dec - 08 Jan	AJet	direct
30 Dec - 15 Jan	Air France

Also check the deals for one-way flights from Paris to Istanbul in December.

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 Istanbul in December from 171€

Return flights