MY MISTAKE - boat leaves on the 26th. That's why I was looking at 24th. [chalking it up to a stupid holiday moment].
The routings I found with AA/OW were through LHR and, yes, if we went over on the 25th the routing would get us in at about 6PM on the 26th - cutting it very close when the ship is scheduled to leave that evening. Unfortunately, I could find some J class seats for THAT itinerary :-(
I'll look at AMS or CDG but don't think those are OW-friendly.
Tried DUS and it wasn't much better.
AJ