BEIJING, April 30 (Xinhua) -- The upcoming May Day holiday is expected to see an average of 2.2 million inbound and outbound trips made by Chinese and foreign tourists per day, up 5.9 percent year on year, according to the National Immigration Administration (NIA) Friday.

This year's holiday, from May 1 to 4 , is a day longer than previous years and suitable for outbound long-distance trips, said the NIA, adding that passenger volumes at major airports in places such as Beijing and Shanghai would increase notably.

It anticipates that the average daily tourist flow at Beijing Capital International Airport and Pudong Airport in Shanghai will reach 79,000 and 107,000 respectively.

The NIA has called on border check agencies to release timely information of the passenger flow and ensure safe and orderly trips for tourists.