Well, as far as the advantages of travelling by plane are concerned, they are speed, comfort and security, to my mind. Travelling by plane is the fastest way to reach some destination at a great distance, and the main benefit it provides people with is saving a lot of time. It's also the most comfortable way of travelling which offers many options for entertainment, a chance to pull out the computer and get some work done and even an opportunity to catch up on your sleep if you are tired and the flight is long. Oh, and it's one of the safest ways to travel as well. The disadvantages of this type of travelling I can come up with are the cost, as flying is more expensive than travelling by other means of transport, and some health side effects such as feeling sleepy and headachy because of low oxygen, getting dehydrated and having problems with ears because of air pressure.