JMC Airlines Limited (also known as JMC Air, JMC Airlines or simply JMC and stylised as jmc) was a UK charter airline formed by the merger of Caledonian Airways and Flying Colours Airlines, following the purchase of Thomas Cook & Son by the Carlson Leisure Group. JMC Air was named after the initials of the son of Thomas Cook, John Mason Cook. The airline was rebranded and remodeled in March 2003 to Thomas Cook Airlines UK. The airline operated flights from its 6 operating bases in the UK, offering seat-only bookings and bookings via (Thomas Cook Package Holidays).