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

Return flights

07 May - 11 May	easyJet
06 May - 12 May	easyJet
22 May - 03 Jun	SKY express
05 May - 19 May	easyJet
28 May - 03 Jun	Vueling Airlines
27 May - 03 Jun	Vueling Airlines
19 May - 03 Jun	Vueling Airlines
05 May - 09 May	easyJet
05 May - 08 May	Vueling Airlines
22 May - 28 May	SKY express
01 May - 07 May	easyJet
27 May - 30 May	Vueling Airlines
15 May - 20 May	easyJet
11 May - 14 May	Vueling Airlines
26 May - 03 Jun	Vueling Airlines
22 May - 12 Jun	SKY express
22 May - 05 Jun	SKY express
15 May - 03 Jun	Vueling Airlines
31 May - 03 Jun	SKY express
31 May - 09 Jun	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 202€

Return flights