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

Return flights

29 May - 01 Jun	Air Europa
08 May - 12 May	Air Europa
08 May - 11 May	Air Europa
08 May - 16 May	Air Europa
30 May - 06 Jun	Air Europa
30 May - 07 Jun	Air Europa
29 May - 06 Jun	Air Europa
16 May - 24 May	Air Europa
24 May - 05 Jun	SKY express
22 May - 05 Jun	SKY express
30 May - 09 Jun	Air Europa
24 May - 28 May	SKY express
22 May - 28 May	SKY express
08 May - 28 May	SKY express
15 May - 05 Jun	Vueling Airlines
31 May - 05 Jun	SKY express
26 May - 05 Jun	Vueling Airlines
12 May - 18 May	easyJet
13 May - 28 May	Vueling Airlines
06 May - 20 May	easyJet

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Lisbon to Istanbul in May from 122€

Return flights