Is it possible to find out which routes are flown by a particular aircraft with an airline? For example SQ flies the A350 from SIN but where to?
With an expert flyer paid subscription you can get the daily schedule for any airport which includes the aircraft type.
A free alternative (although far less precise) is to use flightradar24 and filter by both airline and aircraft. This will of course only give you the routes with A350s in the air at that particular moment.
Have you tried Google flights? You can select a route, select Singapore Airlines and it will tell you the aircraft make
Try this website
I googled “A350 routes”