Add a custom column to My Account Orders table in Woocommerce 3+

This requires 2 functions that will add a new column

The second function hook is a composite hook: woocommerce_my_account_my_orders_column_{$column_id} where {$column_id} need to be replaced by the column key slug that is set in the first function.

That second function manage the displayed row values and you can add for example a custom field to get custom order meta data values.

The code:

add_filter( 'woocommerce_account_orders_columns', 'add_account_orders_column', 10, 1 );
function add_account_orders_column( $columns ){
    $columns['custom-column'] = __( 'New Column', 'woocommerce' );

    return $columns;
}

add_action( 'woocommerce_my_account_my_orders_column_custom-column', 'add_account_orders_column_rows' );
function add_account_orders_column_rows( $order ) {
    // Example with a custom field
    if ( $value = $order->get_meta( '_custom_field' ) ) {
        echo esc_html( $value );
    }
}

Code goes in function.php file of your active child theme (or active theme). Tested and works.

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You are done and have added a custom column to My account orders table:

If you which to make changes in the table html output, you will have to override the template file: myaccount/orders.php