Create custom shipping packages and manually set their display names in WooCommerce

custom-package-name.php

<?php

add_filter( 'woocommerce_shipping_package_name', 'rmg_package_names', 10, 3 );

function rmg_package_names( $package_name, $i, $package ) {

	if ( ! empty( $package['name'] ) ) {
		$package_name = $package['name'];
	}

	return $package_name;
}

add_filter( 'woocommerce_cart_shipping_packages', 'rmg_split_packages' );

function rmg_split_packages( $packages ) {

	$packages = array();
	$first_package = array();
	$second_package = array();
	$counter = 0;

	$cart_items = WC()->cart->get_cart();

	foreach( $cart_items as $key => $cart_item ) {
		if ( $counter < 5 ) {
			$first_package[] = $cart_item;
		} else {
			$second_package[] = $cart_item;
		}

		$counter++;
	}

	$packages[] = array(
		'name' => __( 'First Method', 'rmg' ), // custom value used to control the display name
		'contents'        => $first_package,
		'contents_cost'   => array_sum( wp_list_pluck( $first_package, 'line_total' ) ),
		'applied_coupons' => WC()->cart->get_applied_coupons(),
		'user'            => array(
			'ID' => get_current_user_id(),
		),
		'destination'    => array(
			'country'    => WC()->customer->get_shipping_country(),
			'state'      => WC()->customer->get_shipping_state(),
			'postcode'   => WC()->customer->get_shipping_postcode(),
			'city'       => WC()->customer->get_shipping_city(),
			'address'    => WC()->customer->get_shipping_address(),
			'address_2'  => WC()->customer->get_shipping_address_2()
		)
	);

	$packages[] = array(
		'name' => __( 'Second Method', 'rmg' ), // custom value used to control the display name
		'contents'        => $second_package,
		'contents_cost'   => array_sum( wp_list_pluck( $second_package, 'line_total' ) ),
		'applied_coupons' => WC()->cart->get_applied_coupons(),
		'user'            => array(
			'ID' => get_current_user_id(),
		),
		'destination'    => array(
			'country'    => WC()->customer->get_shipping_country(),
			'state'      => WC()->customer->get_shipping_state(),
			'postcode'   => WC()->customer->get_shipping_postcode(),
			'city'       => WC()->customer->get_shipping_city(),
			'address'    => WC()->customer->get_shipping_address(),
			'address_2'  => WC()->customer->get_shipping_address_2()
		)
	);

	return $packages;
}

Nevermind, I got it working!

Can I add a custom attribute in array of destination? I want add this and then use in a field to calculate shipping on it, is this possible?

Okay a reup :)

@cameronmscott how did you manage to get it working ?
I'm trying to assign pre selected shipping classes to splitted packages and can't find a way