Rephrasing Commercial Airlines with a Lever Harp

Spectator
mary-keller–2 on #109104

When I posted my other inquiry, i didn’t mean checking the harp as baggage; i meant BUYING a ticket for it to sit next to me…I know cellists and bass players do this sometimes, so i’m wondering if anyone knows anything about airlines policies and harp-sized instruemtns taking up SEATS……??