Or go to their Travel Tools page, click on Interactive Route Map, go to the bottom left corner and click "Show only nonstop service", then click the destination city, and you'll see all the inbound possibilities. Doing the same for your outbound city will give a different list. Where they intersect are the likely choices.

And there are tricks mentioned in the Wiki to construct your own connection with up to a 4 hour layover if you take the time to search for better fares or RR availability.