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

Return flights

27 Oct - 05 Nov	Pegasus Airlines	direct
25 Oct - 04 Nov	AJet	direct
31 Oct - 04 Nov	AJet	direct
10 Oct - 17 Oct	AJet
13 Oct - 17 Oct	AJet
30 Oct - 04 Nov	AJet	direct
10 Oct - 13 Oct	AJet
13 Oct - 23 Oct	AJet
08 Oct - 13 Oct	AJet
08 Oct - 14 Oct	AJet	direct
09 Oct - 13 Oct	AJet
10 Oct - 14 Oct	Pegasus Airlines	direct
07 Oct - 13 Oct	AJet
16 Oct - 20 Oct	AJet
31 Oct - 09 Nov	AJet	direct
31 Oct - 03 Nov	AJet
29 Oct - 03 Nov	Pegasus Airlines
27 Oct - 03 Nov	Pegasus Airlines
31 Oct - 08 Nov	AJet
25 Oct - 03 Nov	AJet

Also check the deals for one-way flights from Basel to Istanbul in October.

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 October from 93€

Return flights