Good morning, "family trip!" It would take approximately 8 hours and 25 minutes assuming you were flying non-stop. US Airways flies non-stop to Rome (FCO). I hope this is helpful. I traveled to Rome (Venice and Florence) two years ago with my niece for 14 days. It was a Great time to bond with her. I am a travel agent and often use www.oag.co to answer questions like yours. Another great website for you is www.ciaobambino.com They categorize European trips by age of the child. It's a great resource.
Have a Great holiday! Anywhere But Here!
Have a Great holiday! Anywhere But Here!