I think the OP's plan is to fly to LHR and then say surprise this isn't our destination and lead the partner to the gate for their flight to BOS. So wouldn't want the gate agent in DUB to blurt it out.
Enjoy the lobstah.
Originally Posted by
LondonElite
I don't understand why you're asking this question. Surely you could say to the check-in person 'please don't reveal the final destination, it's a surprise...' He'll know by the time you get on the plane because of the cabin announcement.