Seaplane is an ultimate flying transport that can move in the skies, on the water, and on the ground. Controls are as you expect on this kind of addons - look up to ascend, and look down to descent the plane. The moving speed is relatively fast - it is faster than any horse for as I know. You don't need to fuel a plane or tame it, and it can seat up to 3 people. If you're looking for a fast way of traveling - get a Seaplane addon for MCPE, and you'll never be disappointed.
You can get the plane using a command - /summon iman:waterjet or via Creative Inventory.
How to install addons:
Download addon into your device
Find and open .mcpack or .mcworld files that you download earlier
Click on it to import into Minecraft Pocket Edition
Open the game
Create new or edit an existing world
Scroll down to Add-ons section and select the ones you want to apply