Vehicles transporting Thanksgiving holiday travelers are seen at Los Angeles International Airport in Los Angeles, California, U.S., November 23, 2016. REUTERS/Bob Riha Jr.

Up to 2.8 million people per day, about 600,000 more than average, are expected to fly in the United States over the coming six days, making it a busy period for travel, according to the trade group Airlines for America.
Airports will not be the only crowded places as some 48.7 million people, the most since 2007, are expected to travel 50 miles (80 km) or farther for the holiday, according to motor club AAA. It said the 1.9 percent increase from last year’s level reflected an improving economy and low gasoline prices.
Some travelers early on Wednesday reported smooth experiences.
“I got there at 7:10 and there was no line to get past security,” said Grant Grindler, 24, of his arrival at Washington Dulles International Airport for his flight to Chicago, where he planned to drive to Wisconsin. Ticketing at Dulles was also “a breeze”, he said.
To relieve passengers’ anxiety, airports in …