AirHint found the following cheapest return flights from Frankfurt (FRA) to Istanbul (SAW) in December 2025 (see full year).

Return flights

10 Dec - 12 Dec	AJet	direct
10 Dec - 17 Dec	AJet	direct
01 Dec - 05 Dec	AJet	direct
01 Dec - 08 Dec	AJet	direct
07 Dec - 15 Dec	AJet	direct
10 Dec - 15 Dec	AJet	direct
06 Dec - 13 Dec	AJet	direct
15 Dec - 22 Dec	AJet	direct
15 Dec - 21 Dec	AJet	direct
28 Dec - 30 Dec	AJet	direct
31 Dec - 07 Jan	Pegasus Airlines	direct
27 Dec - 02 Jan	AJet	direct
30 Dec - 04 Jan	AJet
27 Dec - 04 Jan	AJet	direct
25 Dec - 06 Jan	Pegasus Airlines
24 Dec - 02 Jan	Pegasus Airlines
25 Dec - 04 Jan	AJet	direct
25 Dec - 05 Jan	AJet	direct
25 Dec - 06 Jan	AJet	direct
23 Dec - 01 Jan	Pegasus Airlines	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Istanbul in December from $141

Return flights