The fastest way would be to use a local ferry which allows transport between France and Ireland, but one can always use the airline industry to book a flight.
A flight from France to Nairobi would take about 8 hours.
No. It would be northwest of France. See the map below at the link.
There are no ferries from Northern Ireland to France. To get to France by ferry you would first drive to somewhere in the Republic of Ireland, particularly Rosslare, and get a ferry from there. The ferry takes about 24 hours, and the drive to Rosslare from Northern Ireland would take at least 3 hours, depending on where in Northern Ireland you were starting from.
A flight from Phoenix to Paris would be about 11 hours.
The flight path from NYC to Zurich would fly northeast over the Atlantic, then head southeast towards Ireland and the UK, then it would fly over London and then pass over the English channel, then it would turn south over France before descent into Switzerland.
You would fly to Nice, in France, but less than 10 miles from Monaco. Average flight time 10 hours.
You would have to travel to France, and either get a ferry to Ireland from France, which is about 24 hours, or get a ferry from France to England and then another from England or Wales to Ireland.
When comparing countries, there is a huge range of things you could compare them on. Ireland and France have lots of things in common and there are many differences. Ireland is much smaller. Ireland is an island, while France is not. The main language in Ireland is English. The main language in France is French. Irish people are generally considered to be more friendly. Ireland is not as famous for its cuisine as France is. France would be generally warmer than Ireland. There are many other differences in their culture, history, economy, people, society etc.
A typical flight between Dublin, Ireland and Brisbane, Australia would have a flying time of about 20 hours, 43 minutes.
I don't now but i would guess it would be France and Ireland
By plane, it would take about 9 hours.