The Short Answer
A Negombo and Colombo city tour by tuk-tuk is the easiest way to see both cities, good for a first or last day near the airport without needing to arrange your own transport between them.

Negombo and Colombo City Tour by Tuk Tuk
Bookable directly through AsiaByLocals, with a verified local operator.
From USD 75.4
6 hours

