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

Return flights

02 May - 09 May	Air Serbia
25 May - 28 May	Air Serbia
25 May - 29 May	Air Serbia
13 May - 17 May	Ryanair
21 May - 24 May	Air Serbia
02 May - 06 May	Air Serbia
31 May - 14 Jun	SKY express
30 May - 02 Jun	Air Serbia
20 May - 24 May	Ryanair
26 May - 28 May	Aegean Airlines
31 May - 05 Jun	Ryanair
14 May - 19 May	Air Serbia
01 May - 17 May	SKY express
31 May - 17 Jun	SKY express
31 May - 01 Jun	Aegean Airlines
20 May - 02 Jun	Ryanair
31 May - 07 Jun	SKY express
31 May - 03 Jun	Aegean Airlines
31 May - 02 Jun	Aegean Airlines
20 May - 07 Jun	SKY express

Also check the deals for one-way flights from Thessaloniki to Lisbon 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 Thessaloniki to Lisbon in May from $181

Return flights