When the carrier places the passenger in the class lower than the class specified in the purchased ticket, the carrier is obliged, in the period of 7 days, to make refund:
- of 30% ticket price in case of flights up to 1,500 km
- of 50% ticket price in case of intra-community flights exceeding 1,500 km
- of 50% ticket price in case of flights other than intra-community flights, in the distances from 1,500 km to 3,500 km
- of 75% ticket price in case of flights other than intra-community flights, in the distances exceeding 3,500 km
The carrier cannot charge the passenger for placing in the class higher than the class specified in the purchased ticket.