280 air miles between Dublin and Heathrow, London.
From Dublin, Ireland to London, England is 459 kilometres or 285 miles.
69...
It is cheaper to fly from London to Dublin than to rent a car in London and drive (and catch a ferry across the Irish sea) to Dublin. If you shop around you can get some very good value air fairs from London to Dublin.
About 4,129 air miles.
By car: 3 142 kmBy plane: min. 7 h (with the London connexion)
About 160 miles. Some or all of that would be by ferry or air.
About 159 air miles to Halifax, England OR 2,255 air miles to Halifax, Canada.
There is no direct ferry from London to Dublin. You can get ferries to Dublin from Holyhead or Liverpool. You would need to travel to them from London to get a ferry. The total distance, including the ferry, would be about 586 kilometres or 364 miles, though that would depend on your route.
London is better
Cardiff is in Wales. Dublin is in Ireland. Edinburgh is in Scotland. London is in England.
Many airlines fly between London in England and Dublin in Ireland. You can book on their websites.