NPR
As COVID-19 vaccines roll out across the U.S., more travelers are taking to the skies. Friday marked the busiest day for the nation's airports since the middle of March 2020, when COVID-19 caused air travel to plummet. About 1.36 million passengers passed through security checkpoints Friday, according to figures from the Transportation Security Administration. That is the highest volume since March 15, 2020, when checkpoints reported more than 1.5 million passengers.