WASHINGTON, May 3 (Reuters) - The U.S. Transportation Security Administration (TSA) said it screened 1.63 million passengers on Sunday at U.S. airports, the highest number since March 2020, when the coronavirus pandemic slashed travel demand.

The number of U.S. air travelers is still about 35% lower than the same date in 2019, down about 1 million travelers, TSA said. By comparison, just 170,000 people were screened at U.S. airports on the same day in May 2020. U.S. airlines have been adding more flights, anticipating rising summer travel demand. (Reporting by David Shepardson; Editing by Andrew Cawthorne)