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

Return flights

02 Oct - 06 Oct	easyJet
15 Oct - 19 Oct	easyJet
26 Oct - 31 Oct	SKY express
19 Oct - 22 Oct	easyJet
02 Oct - 10 Oct	easyJet
08 Oct - 14 Oct	Ryanair
01 Oct - 08 Oct	Ryanair
14 Oct - 21 Oct	Ryanair
09 Oct - 13 Oct	Ryanair
09 Oct - 10 Oct	Ryanair
26 Oct - 12 Nov	SKY express
26 Oct - 15 Nov	SKY express
26 Oct - 13 Nov	SKY express
26 Oct - 08 Nov	SKY express
26 Oct - 01 Nov	SKY express
26 Oct - 14 Nov	SKY express
25 Oct - 01 Nov	TAP
29 Oct - 19 Nov	Vueling Airlines
26 Oct - 09 Nov	SKY express
26 Oct - 16 Nov	SKY express

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 $212

Return flights