Buying a Board or Broom
To fly, you must first reach level 20. Then go to the [Station] NPC in SM, Flaris, or Darkon. Make sure you have some money to buy a board or a broom. The fastest brooms and boards that you can buy from the [Station] NPC cost 200,000 penya. The lowest price for a board/broom is 5,000 penya.
Besides the NPC boards, you can also purchase Cash Shop boards, or browse the marketplace to see if any are for sale. Beware, they are very expensive.
Cheap brooms/boards will fly slowly, while the 200,000 penya broom and board are the fastest of the NPC boards. The Cash Shop flying devices are much better looking than the NPC boards and brooms and some Cash Shop flying devices are the fastest you can find in the entire game.