Get number of daily visitors in an Aiport for a specific day

Hi, I need to somehow get the number of total visitors in an airport (landing+departuring) on a given date.
Does the API provide such functionality?

Would it be possible to get all planned flights for a specific day, then get the plane model + capacity and sum it all up?

Thanks in advance!

We do not have information on passengers or seat configuration on planes.

The closest information that we can provide is the “Airline Insight” historical data, which has aggregated data on passenger counts by airline between airport pairs, rolled up to a monthly basis, for a time period that is at least a year in the past.