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

Return flights

11 May - 19 May	Air Serbia
25 May - 29 May	Air Serbia
25 May - 28 May	Air Serbia
25 May - 02 Jun	Air Serbia
25 May - 04 Jun	Air Serbia
21 May - 24 May	Air Serbia
09 May - 17 May	Air Serbia
07 May - 12 May	Air Serbia
02 May - 06 May	Air Serbia
09 May - 13 May	Air Serbia
28 May - 04 Jun	Air Serbia
13 May - 17 May	Ryanair
26 May - 04 Jun	Aegean Airlines
30 May - 04 Jun	Air Serbia
20 May - 24 May	Ryanair
30 May - 06 Jun	Air Serbia
25 May - 01 Jun	Aegean Airlines
09 May - 07 Jun	Air Serbia
30 May - 03 Jun	Air Serbia
27 May - 04 Jun	Ryanair

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 $197

Return flights