Is there a cancellation fee on Porter?

It can be. Porter says cancelling after a vehicle is allotted may incur a cancellation fee under its policies, and it tells you the amount at cancellation.

• When: after a vehicle has been allotted to your booking.
• How much: Porter communicates the amount at the time you cancel.
• Where: the fee comes from Porter's policies in its terms of service.
• Avoid it: book only once the order is accepted and ready.