t'way Air began operating as Trinity Airways (TW, Daegu) on September 10, 2026, with Daegu-Jeju and Seoul Incheon-Tokyo Narita becoming its first domestic and international services under the new name. B737-8 HL8754 (msn 44335) became the first aircraft in Trinity Airways livery to operate a passenger service, still operating under IATA code 'TW' and ICAO code 'TWB'.