Originally Posted by
erifax
DUB-JFK on AA is a day flight, where the virtues of J are, in my opinion, less important. It's also relatively short (6h).
Were it me, I'd just take the AA flight.
Me too.
There would have to be a dramatic difference in the products to justify me adding several hours journey time by routing through LHR and being unable to pre-clear immigration this side of the Atlantic.