Press 
A jet card typically refers to debit card-style private jet travel programs that enable you to prepay for flights. You can then book at a contracted hourly rate with guaranteed availability. Jet cards are typically sold in increments of dollars or hours, for example, 25 hours or $150,000, although deposit amounts range from $15,000 to $1,000,000.
Source: Jet Cards: Frequently asked questions about how jet cards work
