Originally Posted by burak25

Works fine.
From the ticket sales area:

Flights need to meet these conditions:
FLASH10: 10% off flights to Europe

• Code expires: 4 June 2024 23:59 UTC +3
• From: all airports in Finland
• To: Paris (PAR), Berlin (BER), Krakow (KRK), Amsterdam (AMS), Rome (ROM), Budapest (BUD), Vienna (VIE), Prague (PRG), Málaga (AGP), Barcelona (BCN)
• Travel dates: 1 July—31 August 2024
• Travel class: Economy
• Trip type: One way / Round trip
• Airline: Finnair