Originally Posted by
SchmutzigMSP
Go to the upper-left, select "Select Map Settings...". Then go to the "General Settings" option and check the box that says "Only Show Non-stop Flights". It's debatable whether this option should be checked by default or not.
It's not useless. It shows all NW-operated flights as well as through/connecting flights. PDX-SIN is one flight number and the map reflects that by drawing a route between the two. If you don't like it, turn on only non-stop flights per my instructions above.
It only shows trips that include one conenction and not all trips with only conenction are shown. For example, it says "sorry, no connections could be found, please try another destination" when you look for DCA-SIN, DCA-BOM or IAD-BOM. It shows MSP-BOM as going west via Seattle. SO it is useless, as far as I am concerned, other than the fact it is a novelty for NW. Many other airlines have had interactive maps for years.