By Arriana McLymore NEW YORK (Reuters) -Commercial airlines around the world canceled more than 4,300 flights over the Christmas weekend, as a mounting wave of COVID-19 infections driven by the Omicron variant created greater uncertainty and misery for holiday travelers. Airline carriers globally scrapped at least 2,366 flights on Friday, which fell on Christmas Eve and is typically a heavy day for air travel, according to a running tally on the flight-tracking website FlightAware.com. Nearly 9,000 more flights were delayed. The website showed that 1,616 Christmas Day flights were called off w…

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