Virgin Atlantic will fly to the Mexican destination from 26 October. Heathrow's winter schedule also includes additional flights to Mumbai from IndiGo.
Elsewhere, a new carrier – Nigeria’s Air Peace – will fly to the country’s capital Abuja, while start-up airline Riyadh Air will serve Saudi Arabia’s capital from Heathrow.
In addition, Saudia will fly to the coastal city of Dammam from 6 November – the first time it has been served from Heathrow.