The U.S. Transportation Security Administration on Monday said it screened more than 1.5 million air passengers a day earlier - the highest single day since March 13, 2020.
The number of airline passengers was down 60 percent in 2020 due to the health crisis. But now, with a growing number of Americans getting vaccinated, demand and advanced bookings are rising.
Sunday was also the 11th consecutive day that over 1 million people were screened at U.S. airports.
While demand is still down some 30 percent compared to pre-COVID levels, and some travel restrictions remain in place, U.S. airline executives last week cited concrete signs of a domestic leisure travel recovery and said losses were declining.