Skyscanner-anna.aero have published an article about un served route of the week and its Miami. 60,000 searches in 2015 via Skyscanner.
Outbound gets a lot more search's than inbound.
LHR (55%), JFK, EWR top transit airports.
With LHR taking 55% share, surly IAG will want to free up those seats with BA/AA and take the rest away from VS by flying a direct route at some stage.
Skyscanner Unserved Route of the Week: Dublin-Miami