First time ever getting this kind of photo in U.S. airspace (you are more likely to see this over busy European airspace). I'm in a Jetblue E190 flying BOS-CLT and from my left side window seat, I saw this 747 from a distance on the right side window, so luckily the next row over was empty so I grabbed the camera and as the AF 747 got closer I snapped away. Most came out unsharp (typical through airplane windows with zoom lens), but this was good enough to share. We were on Southerly track south of New York.. -if you know where it was headed please put in comments below