In Pokemon Go, if you are unable to throw the Pokeball far enough to catch (typically flying) Pokemon, I have a great tip for Android users: Enable Mini Screen View. To enable Mini Screen View on Android, press one of the menu buttons at the bottom of the screen and slide your finger 45 degrees in the direction of the opposite side of the screen.
Enabling Mini Screen View will mean that as you move your finger over the screen at the same speed as before, your finger will cover more distance; In other words, it will move faster, throwing the Pokeball further.
This is a great tip if you’re unable to throw the Pokeball far enough, but also useful if you want more control over the Pokeball. You can use this to be able to swipe slower to throw the Pokeball the same distance, taking your time to get the best throw.