Be prepared to travel from a major city or hub. If you do not live near a major hub, your travel agent can find you the least expensive way to get to the departure point for your international flight.
Try to travel Monday through Thursday. This will give you two big pricing advantages: a) much better seat availability, b) you will save on average $30 or more per person in each direction by not incurring the weekend surcharge. More people travel on weekends and airfare will cost much more.
Minimum stay Saturday required. Many of you have seen this before but what it really means? It's pretty simple. The majority of airlines require traveler(s) to spend an overnight Saturday during his or her trip. If you depart on a Tuesday, in order to qualify for a cheaper rate you must return at least on a Sunday. If you need to depart on Sunday and return the next Saturday, or earlier, you will not be able to qualify for the cheaper fare.
Travel off-season. Prices are highest during Summer and Holidays. You can save as much as 60% on airline tickets if you travel during low seasons like Winter, Spring or Fall.