Craft Commerce: After add to cart, redirect to specific line item
I created a simple plugin to redirect using the onAddToCart method

  craft()-&gt;on('commerce_cart.onAddToCart', function($event){

      $lineItem = $event-&gt;params['lineItem'];

      craft()-&gt;request-&gt;redirect("/commerce/item/?item=" . $lineItem-&gt;id);

  });