That depends on where you are flying to and from. It can take as little as about half an hour and up to not much more than an hour.
10 hours on a plane
Normally 10 hours.
By plane, it would take about 9 hours.
In estimate, around 2 hours (by plane).
It depends on how you're going to get there. By plane it will take 1 hour. By car it will take 17 hours.
From Schiphol to Hedro is one hour and 45 mintes
It takes approx seven hours five minutes maximum .
Dublin/Sydney flight time 22 hours 40 minutes
The flight time is 4 hours, 6 minutes.
The estimated flight time would be 3 hours and 49 minutes.
Ireland has a very long history with Britain, which goes back as far as 1169. From then there have been plantations in Ireland, most notably in the north of Ireland/ There were many revolutions and rebellions. The history between Ireland and Britain is long and complex, too much to go through in an answer like this. So to take a simpler look at what led to the current situation, all of Ireland was under British rule, being part of the United Kingdom between 1801 and 1922. Then, what is now the Republic of Ireland became independent and what is now Northern Ireland stayed as part of the United Kingdom. That is the situation to this day.
They are legal tender in Northern Ireland and in Britain. There is occasionally a bit of reluctance of people in Britain to take them as they are not used to seeing many of them.