From AY site today:
Interesting that they cite "increasing demand".
Also that it will be wet lease but AY purser.
Extra capacity for Finnair flights from SmartLynx and Privilege Style
During September and October Finnair will lease extra aircraft capacity from Riga-based SmartLynx Airlines and the Madrid-based company Privilege Style due to scheduled maintenance breaks and increased demand.
These aircraft are used on flights to: Malaga, Barcelona, Budapest, Madrid, Vienna, Aqaba, Heraklion, Kos, Rhodos, Marsa Alam, Tenerife.
From the customer’s point of view it’s good to know that:
Flight number remains the same
Checked baggage included in the price
Check-in according to Finnair’s normal service concept
Finnair Plus points accrued according to the normal rules
Onboard service according to Finnair’s normal concept
Aircraft branding: SmartLynx or Privilege Style
Cabin personnel: SmartLynx or Privilege Style and a Finnair purser