The Irish giants defeated Harlequins 62-0 before following up with a 52-0 quarter-final rout over Glasgow Warriors.
Watch Leinster v Northampton on Premier Sports
Northampton crushed Clermont 46-24 before doubling down with a 51-16 win over Castres.
RadioTimes.com has rounded up everything you need to know about how to watch Leinster v Northampton on TV and online.
Leinster v Northampton kick-off time
Leinster v Northampton will kick off at 5:30pm.
Viewers can add Premier Sports to their Sky or Virgin Media TV packages, or watch via the Amazon Prime Video add-on.
How to live stream Leinster v Northampton online
You can also watch matches on a range of mobile devices on Premier Sports Player.
Regular subscribers can also stream matches on a variety of devices including laptops, smartphones and tablets via their app.
Check out more of our Sport coverage or visit our TV Guide and Streaming Guide to find out what's on. For more from the biggest stars in TV, listen to The Radio Times Podcast.
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