Accidentally Frontier Missed Flight can be stressful, but there's no need to panic. Airlines usually offer options for rebooking, though fees may apply. Contact the airline's customer service immediately to explain the situation. Depending on availability, you might be able to get on a later flight by paying a change fee and any fare difference. Travel insurance may also provide coverage. Remember, staying calm and acting swiftly can help minimize disruptions and get you back on track to your destination.