Finding the right time to travel all depends on where you are going around the world and what you are looking for. For me, I don’t like going when it is that part of the world’s high tourist season. I don’t really care for crowds and they usually tend to jack up the prices during that time.
If you want to travel to Europe I would say don’t travel during their summer. I’ve done it before and it was pretty warm and there were a lot of people. I would say during Septemeber would be a perfect time. If you are trying to go to Asia I would say going from May through August would be best, if you don’t mind a little bit of rain, because it is there winter and not many people go during that time. I am planning a trip to Thailand for my graduation and we are planning on going in June that way we don’t get many crowds.
If you are planning a trip to the US I feel like any of the major cities in the US will always be busy unless it snows in that particular area. Just doing a little search will help you find the perfect times to travel and see what the difference is in price.