WooCommerce: Hide Checkout Fields For Virtual Products

gistfile1.php

<?php

	add_filter( 'woocommerce_checkout_fields' , 'woo_remove_billing_checkout_fields' );

	/**
	 * Remove unwanted checkout fields
	 *
	 * @return $fields array
	 */
	function woo_remove_billing_checkout_fields( $fields ) {

		if( woo_cart_has_virtual_product() == true ) {
			unset($fields['billing']['billing_company']);
			unset($fields['billing']['billing_address_1']);
			unset($fields['billing']['billing_address_2']);
			unset($fields['billing']['billing_city']);
			unset($fields['billing']['billing_postcode']);
			unset($fields['billing']['billing_country']);
			unset($fields['billing']['billing_state']);
			unset($fields['billing']['billing_phone']);
			unset($fields['order']['order_comments']);
			unset($fields['billing']['billing_address_2']);
			unset($fields['billing']['billing_postcode']);
			unset($fields['billing']['billing_company']);
			unset($fields['billing']['billing_city']);
		}

		return $fields;
	}

	/**
	 * Check if the cart contains virtual product
	 *
	 * @return bool
	 */
	function woo_cart_has_virtual_product() {

		foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
			if($cart_item['data']->is_virtual()){
				return true;
			}
		}
		return false;

	}