Flight cancellation might come as a shocker when you’re sitting in the departure lounge looking at the gorgeous bright sunny weather outside. If there’s not a raincloud or snowstorm in sight, then what gives? Oh yeah, planes can’t fly in extreme heat!  In the summer of 2017, 50 flights were canceled at Phoenix Sky Harbor International Airport. The reason: temperatures were a brain-melting 120°F! In the age of super-advanced technology, it seems weird that air travel can be interrupted by an unusually hot day. The reason is actually in the nature of flight itself! 

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