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

Return flights

28 Oct - 18 Nov	Air Europa
07 Oct - 14 Nov	Ryanair
30 Oct - 05 Nov	easyJet
08 Oct - 14 Oct	easyJet
10 Oct - 13 Oct	easyJet
02 Oct - 07 Oct	easyJet
03 Oct - 07 Oct	easyJet
10 Oct - 14 Oct	easyJet
28 Oct - 06 Nov	Air Europa
08 Oct - 15 Oct	Ryanair
29 Oct - 05 Nov	easyJet
30 Oct - 04 Nov	easyJet
08 Oct - 11 Oct	Ryanair
10 Oct - 15 Oct	easyJet
14 Oct - 20 Oct	Ryanair
15 Oct - 21 Oct	easyJet
29 Oct - 03 Nov	easyJet
31 Oct - 03 Nov	Wizz Air Malta
31 Oct - 05 Nov	easyJet
31 Oct - 04 Nov	Wizz Air Malta

Also check the deals for one-way flights from Lisbon 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 Lisbon to Istanbul in October from 112€

Return flights