This hook allows you to add custom content just above the trips title in archive trip page.

Source

File : /templates/content-archive-itineraries.php

Example :

function prefix_wp_travel_before_archive_content_title() {
    esc_html_e( 'This is the content added using this hook', 'text-domain' );
}
add_action( 'wp_travel_before_archive_content_title', 'prefix_wp_travel_before_archive_content_title' );