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

Return flights

10 Dec - 13 Dec	easyJet
07 Dec - 14 Dec	Pegasus Airlines	direct
09 Dec - 24 Dec	easyJet
10 Dec - 16 Dec	easyJet
12 Dec - 17 Dec	easyJet
01 Dec - 10 Dec	Pegasus Airlines	direct
03 Dec - 10 Dec	easyJet
09 Dec - 15 Dec	easyJet
09 Dec - 16 Dec	easyJet
10 Dec - 14 Dec	easyJet
16 Dec - 30 Jan	Wizz Air
30 Dec - 08 Jan	Pegasus Airlines	direct
31 Dec - 01 Jan	AJet	direct
12 Dec - 01 Jan	easyJet
29 Dec - 10 Jan	Pegasus Airlines	direct
15 Dec - 07 Jan	easyJet
29 Dec - 07 Jan	Pegasus Airlines	direct
13 Dec - 01 Jan	easyJet
31 Dec - 05 Jan	easyJet
28 Dec - 10 Jan	Wizz Air

Also check the deals for one-way flights from Basel 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 Basel to Istanbul in December from $109

Return flights