Horizon Travel established Orion in 1978 to support its package holiday business at a time when there was a shortage in capacity provided by charter airlines. Orion began operation with three Boeing 737-200s on 28 March 1980. Over the next few years, Orion gradually expanded its fleet, operating 11 737-200s by the summer of 1984, and from 1985, beginning to replace them by more modern Boeing 737-300s. From 1984, the airline began to diversify, taking on charter work from other tour operators, while in 1986, Orion received permission to fly scheduled services from East Midlands Airport and Birmingham Airport to various holiday destinations. The airline quickly won a reputation for its quality of service, punctuality and distinctive look. The competition was fierce but Horizon’s destinations continued to increase, correlating with Orion’s increased route-network and fleet growth. In 1987, the Horizon group, including Orion was bought by Bass, the large brewing and hotels group. As a successful holiday tour operator and integrated airline it was an appealing, tidy, and importantly a 'no-strings' package ripe for sale to a competitor. In 1988, Bass accepted an offer from the ever-expanding Thomson Travel Group. When the news was released that Orion was to be integrated into Britannia during 1989, it came as a surprise to the industry and public alike. The last flight took place on 26 January 1989 and it was not long before the familiar livery and titles disappeared from aircraft and buildings at East Midlands Airport because the new owner understandably intended to concentrate its activities at its Luton Airport base. Naturally the scheduled licenses were transferred to Britannia without interruption, but at the end of the 1990 summer season, the airline decided to withdraw from this market in favour of its charter work. In 2005, the TUI Group made big expansion plans into the scheduled market. In the meantime, the previous management of Orion had formed 'TEA UK' in association with TEA. Under the takeover agreement, they were not allowed to base any operations at East Midlands Airport so they choose nearby Birmingham Airport although the airline went on to establish a relatively large presence at East Midlands Airport.
Livery
The Orion Airways livery was a traditional white body with a grey underbelly separated by a triple cheatline in an unusual combination of gold, orange and chocolate-brown. The distinctive chocolate-brown tail bore a large stylized orange 'O'.
Fleet
At the time of the merger, the fleet consisted of:
