Here's what I found using an iPhone 5s as my testing device with all charging being done via a wall socket. With Airplane Mode turned off, I was able to charge from 1 percent to 25 percent charge in 21 minutes. Reaching a 50 percent charge took 45 minutes. Getting to a 95 percent charge took one hour and 32 minutes.
How long does it take to fully charge a iPhone 6?
The team over at iLounge found that both the iPhone 6 and 6 Plus can charge faster with a 2.1A power supply, even though both models ship with a 1A supply. This means you should be able to fully charge an iPhone 6 Plus in two hours flat.
How long does it take for an iPhone to charge enough to turn on?
If I plug it into a wall socket it takes about 3-5 minutes (it shows the red battery with power symbol below) to turn back on, but if I plug it into my laptop it understandably takes longer. Occasionally once it has finally powered back up the battery percent will be more than 1%.