Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.601 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

And remember that EI (which flies JFK-DUB) is a UA partner, albeit not a Star Alliance member.

However, BA sometimes gets better EI award availability than UA does, and Chase UR points can be converted to BA Avios. Surcharges for Avios redemptions are EI TATL flights are minuscule, but even small surcharges trigger certain U.S. taxes that surcharge-free redemptions do not. BA will charge fewer miles (Avios) for JFK-DUB than UA will charge for EWR-DUB.