Ireland is the only country in Europe that has a U.S. Preclearance facility (meaning you pass through U.S. immigration before the flight, then arrive in the U.S. as if it were a domestic flight) and I found the process odd, though not unpleasant.
The advantage of this is that when you arrive in the USA, you can immediately exit or proceed to baggage claim with no further checks.
Many years ago, I flew from Dublin to Boston in Aer Lingus Business Class and went through U.S. Preclearance in Dublin (DUB), but I didn’t remember what struck me as a very odd process. I know that One Mile At A Time recently experienced the same thing, and I, too, found it so strange.
A great solo travel tip spotted this week on Live and Let's Fly.
