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

Return flights

05 Dec - 08 Dec	easyJet
01 Dec - 09 Dec	easyJet
01 Dec - 07 Dec	Ryanair
06 Dec - 10 Dec	Ryanair
05 Dec - 07 Dec	easyJet
13 Dec - 19 Dec	Air France
15 Dec - 18 Dec	easyJet
05 Dec - 07 Dec	Turkish Airlines	direct
01 Dec - 07 Dec	Turkish Airlines	direct
23 Dec - 26 Dec	Turkish Airlines	direct
27 Dec - 01 Jan	Turkish Airlines	direct
29 Dec - 02 Jan	Turkish Airlines	direct

Also check the deals for one-way flights from Toulouse 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 Toulouse to Istanbul in December from $189

Return flights