Sitting in living room, I saw this very large flaming ball outside through trees which then went up at a 30 degree angle, so I went out front to observe, then through back door to continue to watch its path. It angled sharply upward then, all the time looking like it was afire, and finally, after maybe 3-5 minutes, disappeared when it was very high in the sky. It was traveling in a northeast direction. We have a lot of plane traffic but it was definitely not an aircraft. My first reaction was that it looked like a hot air balloon burning.