Denver-based charter broker ONEflight International has grounded everything. In a message to customers, the company said it was pausing all flight activity for the next 30 days "or until further notice" while it carries out a review of its operations and finances. That second clause matters — there is no promise flying resumes in a month.

The scale of exposure is significant. ONEflight is not an airline; it buys charter flights from third-party operators and resells them through its BAJit platform, advertising access to thousands of aircraft. Much of its business came from prepaid jet cards, with minimum deposits reportedly starting at $100,000. Based on the company's sales volume — it booked $232 million in revenue last year — industry tracker Private Jet Card Comparisons estimates more than $150 million in prepaid flights could now be outstanding. CEO Ferren Rajput has admitted the company does not hold customer funds in escrow, so deposits were not sitting protected in a dedicated account.

There were warning signs before the shutdown. Several charter operators recently complained of delayed payments, some claiming six-figure sums owed for flights they had already flown. In August, ONEflight announced an immediate 35% "economic surcharge" citing financial pressures, then scrapped it within hours. In July it sold $2.29 million of future receipts to a financing firm for $1.65 million — fast cash at a steep cost to future revenue. All this from a company that had been spending heavily on brand-building, with ads featuring Shark Tank's Robert Herjavec and NFL great John Elway, a PGA Tour title sponsorship, and a McLaren Formula 1 partnership.

ONEflight has not filed for bankruptcy. It may restructure, raise financing, or resume operations, and customers could yet get their flights or money back. But if it does collapse, depositors would typically rank as unsecured creditors, competing with everyone else for whatever assets remain.

Why should a regular traveller care? Because the lesson travels far beyond private aviation. A high price tag and glamorous marketing guarantee nothing about the safety of your money. Whether it's a jet card, a tour package, or a hotel rate booked a year ahead, prepayment hands a company your cash in exchange for a promise. Refundable bookings only help while the company can still pay refunds, and a "separate account" is not necessarily an escrow account you control.

Before paying anything substantial upfront, it's worth asking simple questions: where exactly is my money held, can it be used for the company's general expenses, and what happens if the provider ceases trading? Paying by credit card, booking closer to departure, and favouring suppliers with strong financial footing all reduce the risk.

Private aviation sells convenience, flexibility, and control. Right now, ONEflight's six- and seven-figure deposit holders have none of the three.