AirHint found the following cheapest return flights from Lisbon (LIS) to Istanbul (IST) in May 2026 (see full year).

Return flights

06 May - 12 May	Air Europa
19 May - 23 May	Air Europa
13 May - 22 May	Air Europa
13 May - 16 May	Air Europa
01 May - 06 May	SKY express
07 May - 11 May	Ryanair
27 May - 05 Jun	SKY express
27 May - 12 Jun	SKY express
01 May - 12 May	SKY express
06 May - 13 May	SKY express
01 May - 13 May	SKY express
01 May - 05 May	SKY express
22 May - 09 Jun	SKY express
27 May - 13 Jun	SKY express
27 May - 09 Jun	SKY express
20 May - 09 Jun	SKY express
31 May - 13 Jun	SKY express
31 May - 09 Jun	SKY express
29 May - 13 Jun	SKY express
29 May - 09 Jun	SKY express

Also check the deals for one-way flights from Lisbon to Istanbul in May.

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 May from 142€

Return flights