It follows a 6 month disruption due to the coronavirus
It's struggling to find space on airplanes to those countries, as flights are still severely restricted compared to pre-covid schedules.
While the cost of sending a parcel or a letter to the other side of the world will remain the same, despite airliners charging a premium for limited room on board.
Customers who want to send messages or presents abroad for Christmas are being advised to prepare as early as possible because of this.