I finally found the way via has_block_in_page( $page, $block_name ) function located in WC_Blocks_Utils Class. You can use it for Checkout as follows: // Conditional function that check if Checkout page use Checkout Blocks function is_checkout_block() { return WC_Blocks_Utils::has_block_in_page( wc_get_page_id('checkout'), 'woocommerce/checkout' ); } For cart page, you can use: // Conditional function that check if Cart page use Cart Blocks function is_checkout_block() { return WC_Blocks_Utils::has_block_in_page( wc_get_page_id('cart'), 'woocommerce/cart' ); } Tested and works