Wayra Digital

You can show icon and two lines of shipping info static or based on product price.
For example, you can set free shipping on products expensive than $ 500, then in product cheaper than $ 500 you show “Shipping on all country” and if the price is upper $ 500 you show “Free shipping!”.
You can use icon, one text line or two.
It’s possible to select between 4 position in product page: 
* Before product price 
* After product price 
* Before add to cart button 
* After add to cart button
<h3>Translations</h3>
Avialble in this languages: 
* English (default) 
* Spanish (Spanish) 
* Spanish (Argentina) 
* Spanish (Uruguay) 
* Spanish (Chile) 
* Spanish (Perú) 
* Spanish (Venezuela) 
* Spanish (Colombia) 
* Spanish (Costa Rica) 
* Spanish (Guatemala) 
* Spanish (Mexico) 
* Spanish (Puerto Rico)
<h3>Performance</h3>
Clean and very light weight. We love simplicity and efficience.
This plugin no affect your site speed or Google Page Speed result.

Wayra – Free shipping on product details

Show icon and shipping text on products based on product price.

BlueGlass

Woocommerce Plugin that allows you to select how “Free Shipping” coupons will be applied on checkout.
How to use: 
On settings page “WooCommerce > Shipping > Shipping options”, select the behavor. 
Add coupon as usually, check box “Allow free shipping”, Save and use coupon as usually.
<h3>Features</h3>
<ul>
<li>Can Add discount with amount that is equal to the chosen shipping price.</li>
<li>Can Null the prices of available shipping methods.</li>
<li>Can Hide all shipping methods, except “Free Shipping”</li>
<li>Can Hide all shipping methods, except “Free Shipping” and “Local Pickup”</li>
<li>WPML compatible.</li>
<li>Polylang compatible.</li>
</ul>

"Free Shipping" Coupons Behavior for WooCommerce

Woocommerce Plugin that allows you to select how "Free Shipping" coupons will be applied on checkout.

Wayra – Free shipping on product details vs "Free Shipping" Coupons Behavior for WooCommerce