WooCommerce Per Product Shipping

Define separate shipping costs per product which are combined at checkout to provide a total shipping cost.
Define shipping costs per-product and per-variation

WooCommerce Per Product Shipping allows you to define different shipping costs for products, based on customer location.

Costs can be added to other shipping methods, or used as a standalone shipping method.
WooCommerce Per Product Shipping Features:

Define line and per-item costs per product
Define line and per-item costs per variation
Costs can vary depending on the destination
Import and export rates via the built-in simple CSV handler
Use as a standalone shipping method, where the final cost is the sum of all product costs
-or- add per-product costs to other shipping methods

This is a fantastic solution if your store is selling one-off, heavy or large products which require additional shipping unlike the rest of your catalog, or if you only have a few products with set shipping fees.