Originally Posted by
mnbp
I was successful (on ITA Matrix) to quickly find an example four segment trip:
3/4: YUL-DTW-MSP-SEA-PVG
3/6: PVG-LAX-MCO-LGA-YUL
for 807 CAD. I used ITA's advanced routing codes and specified "DL DL DL" (three segments). This search returned both three segment and four segment routes for some reason.
You can always add a plus sign to ITA as well, for DL DL DL+, DL DL DL DL+, etc. Opens up more options sometimes and I've snagged some interesting broken fares.