Airlines don't guarantee their schedules, and you should realize this when planning your trip. There are many things that can-and often do-make it impossible for flights to arrive on time. Some of these problems, like bad weather, air traffic delays, and mechanical repairs, are hard to predict and beyond the airlines' control.
If your flight is delayed, try to find out how late it will be. But keep in mind that it is sometimes difficult for airlines to est...
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