It depends on your chosen method of travel.
A direct flight from Heathrow in London to Rome is about 2 hours and 20 minutes.
From Rome to London Heathrow it is 2 hours 50 minutes on Alitalia London to Rome is 2 hours 30
2'10
30Hours 25min Auckland to Rome, Via London Heathrow.
It will take about 7 hours.
about 12 hours
about 12 hours
travel by bus from London to Aberdeen it takes 364 days
1 DAY
About 6 hours from Gatwick
About two hours.
It depends on where in the US you are going to.