how many hours is it on a plane from ireland to vietnam going there in august,for charity walk.?

Answer 1

About 13-14 hours if direct, longer if you have to change planes.

Answer 2

You cant book a flight direct from the UK or Ireland to Vietnam,so you have to consider time in transit.
I dont know if this will help,but i always book a flight to Bancock[much cheaper],then book a connecting flight to Hanoi with Air Asia,you will save allot.

Answer 3

If you can get a direct flight, 11 hours 9 minutes of flying time depending on winds, aircraft type, weight, etc. It's 5,851 statute miles. You can get any flight time or distance estimate at: http://www.jets.com/