AirHint found the following cheapest return flights from Thessaloniki (SKG) to Lisbon (LIS) in September 2026 (see full year).
Return flights
| 25 Sep - 29 Sep | Air Serbia | ||
| 03 Sep - 07 Sep | Aegean Airlines | ||
| 03 Sep - 06 Sep | Aegean Airlines | ||
| 04 Sep - 07 Sep | SWISS | ||
| 02 Sep - 08 Sep | Ryanair |
Also check the deals for one-way flights from Thessaloniki to Lisbon in September.
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