Aer Lingus has announced what it says will be its largest ever winter schedule, with a new transatlantic route, and additional seats on short-haul services from Dublin to Birmingham and Heathrow.

The carrier will launch a thrice-weekly service to Miami (originally announced in November last year), with flights departing on Wednesdays, Fridays and Sundays, adding to existing routes to Boston, Chicago, New York, Orlando, San Francisco, Washington, Los Angeles, Newark, Hartford and Toronto from Dublin, and Boston and New York from Shannon.

The airline will operate an additional 350 transatlantic flights compared to last year – a 13 per cent increase, with the Dublin-Toronto route seeing a 96 per cent increase in capacity, being served with four flights per week operated by A330 aircraft.

The Dublin to Toronto service in particular will see a 96 per cent increase in capacity with four flights per week, operated by a larger Airbus A330.

On its short-haul network, Aer Lingus will add an additional peak morning frequency between Heathrow and Dublin this winter, adding 56,000 seats to the route. Flight EI156 will depart Dublin at 0830, arriving into Heathrow at 1000, with the return leg EI157 departing London at 1050 and arriving into the Irish capital at 1210.

The carrier will also increase capacity on its Dublin-Birmingham flights by 50,000 seats (an increase of 40 per cent), by rostering larger A320 aircraft on the route.

Flights to Hamburg will operate up to ten times per week, double the frequency of last year, and there will be new winter flights to Bilbao.

In total the carrier says it will offer 300,000 additional seats to Europe and North America this winter.