CBP
Apologies if this has already been answered - I couldn't find it in a search.
What US-bound flights do not clear CBP in Dublin this summer season? Is it only EI's 2 BOS and 1 ORD or are any others (DL, AA,...) similarly afflicted? I may have a US trip coming up and want to ensure I'm only considering itineraries with precleared flights.
Thanks!
C.