Flight time from Detroit to Auckland (the largest city, and most air-served) is at least 20 hours. No airline flies direct between Detroit and Auckland, so you will have to change flights at LAX.
its further to fly to London to new zealand
It depends on where you are?
If you fly, you can expect it to take 13-16 hours from Detroit to Lagos.
It takes 15 hours 45 minutes to fly from New Zealand to Oklahoma.
About 24 hours
10 hours
about 11 hours!
It would take about 25 hours to fly from Wellington, New Zealand to Rabat, Morocco.
it takes 5 hours
3 hrs
1 hour 13 mins
7 Hours