如何定最便宜的机票

A lot of people I know still use yahoo travel or expedia to book tickets. this is way out of days. Expedia did not offer good deals any more. The best one now is farecast and kayak. Also when to fly and when to book the tickets are important. Here is the detailed information on how to book and when to book the best airfare.click: how to book and when to book the fightsHow to book and when to book the cheapest airfare