<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by jpatokal:
There is of course no point in flying more than halfway around the world, because then it would be quicker to fly the other way around...</font>
Actually it might be quicker to fly more than halfway round the world because of the prevailing wind (always from the west due to the rotation of the earth). Between two places exactly on opposite sides it will usually be significantly quicker to fly eastbound than westbound.