DeeJay,
The site does give flight routings. On their main home page, click on 'database search' at the top of the page. On the next page enter any details you might have eg DLH1EL in the flight number box and click. The routing details of the flight will come up along with registration of the aircraft performing the flight. On that same page, if you click on 'more' on the right hand column, you will get a complete history of that flight number.
Cheers,
Ian