Originally Posted by
Carfield
There are also two separate custom checkpoints, which I don’t quite understand.
That is quite easy to explain: The customs checkpoint after immigration is for hand luggage, i.e. if you had no checked luggage at all, you would never walk through the second customs post in arrivals.
Originally Posted by
Carfield
The biggest mystery was that there was actually a second checkpoint for the Czech Republic flight, which was really strange and I wish that the ground agents or my e-tickets would have warned me about it. I actually got two bottles of water from the lounge, and in my case, it was okay, but there was an American couple, which had to surrender an expensive bottle of wine bought at duty free. I am just amazed on how airlines, airport agents, and various departments withhold these important information from passengers. I understand the US and UK flights, but why a Prague bound flight? Also all the additional security measures were missing on the return flights.
I'm not sure about the second checkpoint for the Czech Republic flight, maybe the flight left from a pier normally reserved for US-bound flights? You do have to go through security again if you are arriving from outside of the EU and connecting to another flight, which explains why you did not have to do it on the flight back. The non-liquids rule for hand luggage applies to all flights in the European Union and to North America.