Yes, you can cancel a flight without insurance in 2026, but your ability to get a monetary refund depends entirely on the "Fare Class" of your ticket and the timing of the cancellation. Under the "24-Hour Rule" (enforced by the US DOT and similar 48-hour rules in India/EU), any ticket booked at least seven days before departure can be cancelled for a full refund to your original payment method within 24 hours of booking. Beyond that window, if you purchased a Non-Refundable or "Basic Economy" ticket, you will generally receive nothing, or at best a "Flight Credit" minus a heavy cancellation fee. However, if you bought a Fully Flexible/Refundable fare, you can cancel up to the moment of departure for a 100% refund. In 2026, a "pro" workaround is that if the airline cancels or significantly changes your flight (usually by more than 2-3 hours), you are legally entitled to a full cash refund regardless of your ticket type or insurance status. Without insurance, you are essentially "self-insuring," which is fine for cheap domestic hops but risky for expensive international trips where a medical emergency could lead to a total loss of the fare.