Most programs have peak period surcharges. They can range as high as 40%, but more typically are 10-20%. For travel outside the contiguous 48 U.S. states, including the Caribbean and Mexico, some programs also have surcharges, typically 10-15%. Programs provide a list of peak days and blackout days in advance. Some have none, and while most have between 10 and 30 peak days, others have over 50. If you plan to do a lot of flying during holidays and high-demand periods, you will want to factor this into your decision. Peak days, peak day surcharges, and blackout dates are included in the Private Jet Card Comparisons' comparisons spreadsheet.