Aeromexico will offer direct daily flights on its London-Mexico City route from May 17.
The airline started operations between the two countries in 2012 with three flights a week, increasing to six a week in 2016, and will now offer daily nonstop services between London and Mexico City.
The airline operates out of Heathrow T4 and out of T2 at Mexico City airport.
Since 2013, passenger traffic between Mexico and the UK has grown close to 32 per cent, and 689,283 passengers were carried between the two countries in 2016 alone, representing a 20.3 per cent increase over 2015.