Of course, WP Travel plugin provides the feature regarding adding trips(which have been created) to the menu. You can add trips in the menu by going to Admin panel > Appearance > Menus
You have to check in the Trips option under Screen Options so that the Trips option will appear under Add menu item section as shown in the screenshot below.
You can add trips in the menu as the main menu item as mentioned above as well as can add trips in the menu as a submenu item.
For detailed assistance, please refer screen record.
Further, if you have any queries, please submit them to our Contact page.