Edit:
Since Flutter version 2.10, you no longer need to switch to channel beta for this.
Maybe I'm answering this late, but this may help someone in the future.
At the moment of writing this it is possible to be done, it is bugged on the stable channel, but it works perfectly on channel beta.
Just switch to channel beta:
flutter channel beta
flutter upgrade
Then follow this instructions to add url_launcher dependency to your project and import this package wherever you want to use it:
import 'package:url_launcher/link.dart';
And finally wrap any widget with this:
Link(
uri: Uri.parse('www.google.com'),
builder: (context, function) {
return InkWell(
onTap: () => print('Do something'),
child: Text('Right clickable text')
);
});