rearrange shipping options

Add_filter('woocommerce_package_rates', 'wf_sort_shipping_methods', 10, 2);

function wf_sort_shipping_methods($available_shipping_methods, $package)

{

// Arrange shipping methods as per your requirement

$sort_order = array(

'wf_shipping_ups' => array(),

'wf_shipping_usps' => array(),

'free_shipping' => array(),

'local_pickup' => array(),

'legacy_flat_rate' => array(), 

);

// unsetting all methods that needs to be sorted

foreach($available_shipping_methods as $carrier_id => $carrier){

$carrier_name = current(explode(":",$carrier_id));

if(array_key_exists($carrier_name,$sort_order)){

$sort_order[$carrier_name][$carrier_id] = $available_shipping_methods[$carrier_id];

unset($available_shipping_methods[$carrier_id]);

}

}

// adding methods again according to sort order array

foreach($sort_order as $carriers){

$available_shipping_methods = array_merge($available_shipping_methods,$carriers);

}

return $available_shipping_methods;

}