Frontier Airlines follows a very strict "non-refundable" policy in 2026, but there are federally mandated exceptions. You are entitled to a full refund to your original form of payment if you cancel within 24 hours of booking, provided your flight is at least 7 days away. Beyond that window, you generally only get your money back if the airline cancels the flight or makes a "significant" schedule change (typically a delay of more than 3 hours for domestic flights). For all other cancellations, Frontier usually issues a "Travel Credit" rather than cash, which must be used within a specific timeframe (often 12 months). If you have the "Works" bundle or hold Diamond Elite status, you may have more flexibility, but for the standard "Basic" fare traveler, a cash refund is rare without a major carrier-side disruption.