Getting To Rotterdam
Most international flights will land in Amsterdam, Schipol Airport.
The easiest way to get from Amsterdam Schipol Airport to Rotterdam Central is via train. The cost is around 15 Euros each way.
See the following for booking options:
Netherlands by Train: https://netherlandsrails.com/en?from=schiphol-airport&to=rotterdam-centraal
Transportation in Rotterdam
Rotterdam has an excellent public transportation system. You can download an app on your phone for paying for transportation, or purchase a reloadable transport card. Please see the “Visit-Rotterdam” Information page on transportation here: https://www.rotterdam.info/en/visit/good-to-know/travelling-in-rotterdam