Hello @aggeliki,

Currently, we do not have the option to add the price range like you have asked but you can hire a customizer if you want to add the feature in your plugin.

To hire a developer please refer to below-given link:

http://wptravel.io/hire-wordpress-customizer/

Alternatively, if you want the multi checkout system i.e. book multiple trips at the same time then we do have the addon ” WP Travel utilities” that will allow you to add the multi checkout feature.

To know more about the addon please refer to below given link:

http://wptravel.io/downloads/wp-travel-utilities/

Thank you.

Regards!!