We have a system, where every holiday day is given a number of points, up to 20 max in high season, xmas/easter holiday, and 1 for low season days.
The following year, pilots are given a ranking, the top one being the one with the lowest total points down to to the highest, with the pilots on top getting priority in the bidding phase for the holiday.
We can make up to 20 bids for the holiday year, and the results are published after a few weeks.
A few weeks after the bidding phase, we have an open phase, where the leftover holiday days are up for grabs, with no consideration for the ranking.
Pilots joining mid year are given an average position in the base rank for their position (FO/CPT).
The system is delivered by AIMS.