Can I change the placeholder of the Airport Picker Widget?

Also, is there a wayy to change placeholder text? So instead of "Search by airport code, name, or location" we want to say something else.

There's no way to do this within the Widget Wizard, but a workaround is to use CSS. The idea is to hide the original placeholder then replace it with a different one.

Inject the following CSS Codes to the Widget itself.

#select2-airports-container:before {

    content: 'Place your placeholder here';

    color: #aaa;

}

.select2-selection__placeholder {

    display: none;

}

Change the Place your placeholder here text upon your discretion.

Complete guide: How-to-Inject-CSS-Codes-to-Widgets 

Result: