Airliners of LOT Polish Airlines are seen parked at Warsaw Chopin Airport in Warsaw, Poland on Sept. 2, 2020. The Polish government has banned direct flights from 44 countries starting Sept. 2 to prevent the spread of the coronavirus. Countries falling under the restrictions include the United States, Brazil and Spain. (Photo by Jaap Arriens/Xinhua)

Passengers wearing face masks are seen in a bus at Warsaw Chopin Airport in Warsaw, Poland on Sept. 2, 2020. The Polish government has banned direct flights from 44 countries starting Sept. 2 to prevent the spread of the coronavirus. Countries falling under the restrictions include the United States, Brazil and Spain. (Photo by Jaap Arriens/Xinhua)

A Wizz Air aircraft is seen taking off at Warsaw Chopin Airport in Warsaw, Poland on Sept. 2, 2020. The Polish government has banned direct flights from 44 countries starting Sept. 2 to prevent the spread of the coronavirus. Countries falling under the restrictions include the United States, Brazil and Spain. (Photo by Jaap Arriens/Xinhua)

A Wizz Air aircraft is seen before takeoff at Warsaw Chopin Airport in Warsaw, Poland on Sept. 2, 2020. The Polish government has banned direct flights from 44 countries starting Sept. 2 to prevent the spread of the coronavirus. Countries falling under the restrictions include the United States, Brazil and Spain. (Photo by Jaap Arriens/Xinhua)