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

Return flights

02 Dec - 13 Dec	Pegasus Airlines	direct
04 Dec - 08 Dec	easyJet
05 Dec - 08 Dec	easyJet
06 Dec - 10 Dec	easyJet
11 Dec - 15 Dec	easyJet
05 Dec - 07 Dec	easyJet
15 Dec - 21 Dec	easyJet
01 Dec - 05 Dec	easyJet
15 Dec - 17 Dec	easyJet
05 Dec - 08 Dec	Pegasus Airlines	direct
12 Dec - 10 Jan	easyJet
20 Dec - 07 Jan	easyJet
21 Dec - 20 Jan	Wizz Air Malta
27 Dec - 06 Jan	SunExpress
27 Dec - 06 Jan	AJet	direct
30 Dec - 01 Jan	easyJet
04 Dec - 05 Jan	AJet	direct
12 Dec - 10 Jan	Pegasus Airlines	direct
21 Dec - 20 Jan	AJet	direct
31 Dec - 02 Jan	AJet	direct

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 96€

Return flights