WP Travel plugin provides the feature regarding renaming text ‘Trip code‘ using filter in single trip page as per your requirement.

You can rename text ‘Trip code‘ by adding following given code in functions.php file of your child theme.

function wp_travel_customized_trip_code_label( $strings ) {

    $strings['trip_code'] = 'Your trip code';
    return $strings;
	
 }

add_filter( 'wp_travel_strings', 'wp_travel_customized_trip_code_label' );

For detail assistance regarding creating child theme, please refer link.

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