Is this question correct?

"Is there anyone who is interested in aviation?"

And this would have been better off under <a href="https://www.italki.com/questions" rel="noopener noreferrer" target="_blank">https://www.italki.com/questions</a>; - it's not really a discussion subject =}

Is there someone <em>here, in my school, in this town, available etc. </em>who is interested in aviation?

Is - because it is singular not plural.

You have to specify the question, otherwise it sounds like you're asking if someone <em>exists </em> that is interested in aviation.

The title must be "Is this question correct?" 😁