"Big Jet Plane"- Angus & Julia Stone

Not really sure what this song is about. If there's a point at all? At first I thought it was simply just an expression of missing someone who is far away and be willing to take a "big jet plane" to see them...but after intently listening to the lyrics, I feel like it could be something else. Nevertheless, that's what it means to me. It's also good to listen to before travelling by air.