The provincial derby will kick off at 8pm, with live coverage on Setanta Sports Ireland.
To purchase tickets for the all-Irish semi-final, please visit the Leinster website by clicking here.
For further information on tickets for Munster supporters, please visit the Munster website from Monday (May 10) by clicking here.
In the other semi-final, the second-placed Ospreys will take on Glasgow Warriors, who finished third, at the Liberty Stadium on Friday (May 14). The Welsh-Scottish affair will kick off at 7.05pm.
Tickets for the grand final on Saturday, May 29 (kick-off 6.30pm) will be available to buy from the competing sides' ticket offices.