3. Being late for your flight

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If you do not reserve you seat and are late for an overbooked flight, you might be given a premium class seat simply because the company will have no way. We cannot deny that this tip is rather dangerous and risky, but it works well if the times are busy. Always remember that you must not miss the check-in time. The passengers ahead might be given a flight upgrade instead of you and you will experience even more trouble.