Monarch Airlines is a charter and scheduled airline based in Luton, England. It is one of the UK's largest charter airlines operating to Europe, the USA, the Caribbean, India and Africa serving mainly leisure destinations. It also operates scheduled flights (under the Monarch Scheduled brand) to Mediterranean destinations and the Canary Islands.
This is all true but Monarch's charter/scheduled split is 40/60% respectively and to say most of their business is charter is incorrect.
A lot of tour operators now book Monarch's scheduled flights via a direct trade website/viewdata.