7 Answers

"Tie a Yellow Ribbon "Round the Old Oak Tree".

& the old John Denver classic "Hey it's good to be back home again."

John Denver's 'Im leaving on a jet plane" I know a lot of Christian songs about coming home...but that refers to going to heaven

I always liked the song, "Country Road" by John Denver.

Green Green Grass of Home....Tom Jones

Tie a Yellow Ribbon Round the old oak tree......Tony Orlando

Or a song from an Aussie band named the Radiators......Comin Home

Diddy (?) has a song actually titled "I'm Coming Home" and the lyrics are nice. J.Cole also has recorded this song, very rapper.  
Chris Daughtry has a beautiful ballad, but it's called "I'm GOING Home".    

"Country Roads"  by JOHN  DENVER.        OMG, I just looked  up before posting, as I should always but don't,  and I saw Chiangmai's and  Shootah's answer.  Same as mine,  and surprisisngly, there it was!!  Good answer,  then!!

'I still call Australia home'