Thanks for the information. As a general rule of thumb I thought Tuesday and weds would be the best days to travel but I was hoping there was some way to check how full a flight was before I booked. In the US I used how many seats were empty when I booked and when I did on line check in. I guess US carriers assign seats at booking and Qatar air doesn't and is the reason why seats still show up empty during on line check in?

I hate this fact as I have changed seats during online check in to sit next to what i thought was an open seat only to find someone seating in that seat and all other open seats taken.