This WordPress Plugin let you set a wide range of conditions (like minimum/maximum quantity of total items and/or a minimum amount in the WooCommerce cart) to get Free Shipping. You can also limit it to a subset of countries and exclude selected states or provinces inside that countries.

Demo:

https://tinyurls.ca/zytdY

https://www38.zippyshare.com/v/3aIup6aK/file.html

https://mega.nz/#!uyw0FChQ!7pxW_3TRqV2f7tU4h86lHDUde4sktvzY3I0bfr0GTRE

http://uploadseed.com/v6