Adjust shipping coast based on country and state

function.php

add_filter( 'woocommerce_package_rates',  'wf_add_charge_if_exceed_cost', 15, 2 );
function wf_add_charge_if_exceed_cost( $available_shipping_methods, $package ){
	
	$mothods  = array('wf_woocommerce_shipping_pro'); //Set methods to adjust

	//Config this array with country code, state code and rate to be added.
	$destination_array = array(
		'US' => array(
		    'NY' => 5,
		    'CA' => 6,
		),
		'CA' => array(
		    '*' => 10,
		)
	);

	global $woocommerce;
	$customer_country = $woocommerce->customer->get_shipping_country();
	$customer_state    = !empty($destination_array[$customer_country]['*']) ? '*' : $package['destination']['state'];

	foreach($mothods as &$current_method) {
		foreach ($available_shipping_methods as $shipping_method => $value) {
			if( strpos( $shipping_method, $current_method ) !== false ) {
				// Cost adjustment
				if ( ! empty( $destination_array[$customer_country][$customer_state] ) ) {
					$value->cost = $value->cost + floatval( $destination_array[$customer_country][$customer_state] );
				}
			}
		}
	}
	return $available_shipping_methods;
}