The international carrier will launch four weekly flights to Male in October, with two of the new services set to be direct connections.
Flights to the Maldives will operate alongside the carrier's existing services from the UK, which includes routes from Manchester, Edinburgh, Glasgow, Belfast, Dublin, Leeds Bradford and Teeside.
Chanaka Olagama, manager of Sri Lankan Airlines' UK and Ireland operations, said: "We recognise the need to introduce this non-stop service for such a popular holiday destination.
"Customers' needs are our priority and we believe that this new direct service will provide a time-effective way to travel in style and comfort to their paradise location."
Other new flights to Asia were announced by Pakistan International Airlines last week. The flag carrier is set to launch flights from Leeds Bradford Airport to Islamabad next month.