Happy landings is a phrase commonly used to express well wishes for a safe and successful arrival after a journey or voyage. However, there are several other phrases that can be used as synonyms to convey the same sentiment. These phrases include 'smooth landings,' 'safe arrivals,' 'successful landings,' 'good journeys,' 'pleasant arrivals,' and 'comfortable journeys.' Each of these phrases can be interchanged with 'happy landings' to express joy and satisfaction at the end of a journey. Ultimately, the goal of these phrases is to wish someone a safe, smooth, and enjoyable journey, and a successful and happy arrival at their destination.