Is data on international air traffic volume in the US freely available? I'm looking for air traffic flow data which has the passenger air traffic from countries outside of the US to every international airport in the US. Ideally, I would like to know how many passengers came from other countries to the international airports in the US but I can also use load factors. I'm only interested in free data. Any ideas would be appreciated. I'm willing to parse together a data from multiple datasets/sources.
Try U.S. International Air Passenger and Freight Statistics Report.

Example of data for Q4 2015: