The airline allowed the passenger to cancel their reservations from the Polish airlines or the plane ticket up to 24 hours before the scheduled departure time of the flight. In addition, the flight can be canceled on site or at the airport. In order to avoid the flight cancellation fee, passengers must cancel the flight booking on LOt Polish Airlines within 24 hours of booking the flight. When a passenger cancels a flight within 24 hours of purchase, a cancellation fee will not be required for more on Lot Polish Cancellation Policy follow the provided link.

https://www.cancellation-policy.com/lot-polish-cancellation-policy