Many of the pitfalls that cause travelers to miss flights—from delayed departures to traffic jams—are beyond their control. Nevertheless, there are ways to up your chances of making it on that plane, no matter what obstacles the universe throws in your path. Step one: Stop making all-too-common travel mistakes. Even the best-laid plans can go awry, so keep yours intact by avoiding the following seven blunders that could make you miss your flight.
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