It didn't work for me either. Pretty much the whole of the city I live in is under a flight path, so it's definitely not a lack of data. On a related note, Siri

It didn't work for me either. Pretty much the whole of the city I live in is under a flight path, so it's definitely not a lack of data. On a related note, Siri has regressed for me since iOS 8. It won't shuffle my music by genre anymore, always telling me "I'm having a bit of trouble".