Caribbean Airlines will launch a second weekly non-stop flight between Georgetown, Guyana and Toronto from 1 December.
The carrier will operate on the route using Boeing 767-300ER aircraft.
In addition, Caribbean Airlines will increase its flight frequency between London Gatwick and Port of Spain Piarco International Airport in Trinidad and Tobago from 20 November.
The airline will add a third weekly non-stop flight on the route. The additional service will be operated using 767-300ER aircraft, adds the carrier.
No other airline operates between Georgetown and Toronto, schedules in Innovata show. British Airways offers a one-stop service between Port of Spain and London Gatwick.