Trailboss wrote on Jan 30^th, 1980 at 9:08pm:

I wanted to program a roundtrip back to Tinker, but the FSX flight planner doesn't permit this.

The way I achieve a round trip flight, is to use FSC9 (latest version is 9.1) and then save it as an FSX flight plan and then load it. FSC has been a great buy for me. Well worth the money I spent.

It is very helpful if I don't have charts, because I can use it to work out which Jet Airways or Victor Airways to use for the flight.