AirHint found the following cheapest return flights from Istanbul (IST) to Barcelona (BCN) in October 2025 (see full year).

Return flights

07 Oct - 14 Oct	Pegasus Airlines
01 Oct - 07 Oct	Wizz Air UK
22 Oct - 29 Oct	Pegasus Airlines
07 Oct - 09 Oct	Wizz Air UK
17 Oct - 24 Oct	Pegasus Airlines
07 Oct - 11 Oct	Pegasus Airlines
02 Oct - 09 Oct	Wizz Air UK
08 Oct - 14 Oct	Pegasus Airlines
06 Oct - 11 Oct	Pegasus Airlines
01 Oct - 08 Oct	Wizz Air UK
30 Oct - 03 Nov	AJet
28 Oct - 27 Nov	Wizz Air UK
05 Oct - 04 Nov	Pegasus Airlines
28 Oct - 03 Nov	Wizz Air UK
28 Oct - 04 Nov	Pegasus Airlines
29 Oct - 25 Nov	Wizz Air
25 Oct - 01 Nov	Pegasus Airlines
25 Oct - 02 Nov	Pegasus Airlines
28 Oct - 02 Nov	Wizz Air UK
23 Oct - 01 Nov	Air Albania

Also check the deals for one-way flights from Istanbul to Barcelona 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 Istanbul to Barcelona in October from 125€

Return flights