Have you tried flightsearch.com?
It does not show prices or offer booking facilities, but it does appear to shown most of the possibilities between most points using scheduled airlines. It does not include all scheduled airlines, AA for example has opted out, but it usually seems to throw up a good range of options that can be booked throug travel agents or direct with the airlines.
For Saturday 26th November it shows nine distinct options, more if you include code shares, several with only one stop and several of avoiding the USA.