April was the height of the air travel collapse. In that month, flights plunged to just 13,600 globally on Apr. 25, compared with 95,000 tracked by Cirium on Jan. 3. This represents a stunning collapse in global flights over the period, down by more than 86%. 

Cirium’s data showed airlines operated 16.8 million flights from Jan. 1 to Dec. 20, down from 33.2 million in the same period the prior year. US travel was down 40% over the same period, from 21.5 million flights in 2019, while international flights were 68% below the 11.7 million flights tracked the year before. 



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