Flybondi, Argentina’s largest low-cost carrier, has been temporarily grounded by aviation regulators due to unpaid jet fuel bills, halting all flight operations. The regulatory enforcement action stems from the airline’s inability to secure foreign currency for fuel payments, a critical operational cost accounting for roughly 40% of expenses. Creditors have urged ANAC to initiate involuntary bankruptcy proceedings amid over $122 million in unpaid debts. This suspension marks a new escalation from the airline’s protracted crisis, which previously left all but one Boeing 737 grounded since June 2026. The grounding disrupts passenger travel and exposes the fragility of low-cost operators in high-fuel-cost environments, potentially triggering further creditor actions and route gaps across Argentina’s aviation sector.