customs

clear, go through

After landing in Paris, the passengers had to go through customs before collecting their luggage.

wave sb through

The officer waved us through customs so quickly that we barely had time to open our bags.

control/controls, regulations

When traveling internationally, passengers must pass through customs control at the airport.

duty/duties

You need to declare any items subject to customs duty when you enter the country.

building, hall, post

Passengers waited in line at the customs building before boarding their international flight.

declaration, document, documentation, form

When you arrive at the airport, you need to complete a customs declaration for any items you're bringing in.

clearance

The shipment finally got customs clearance after two weeks at the airport.

at ~

The officer checked my passport when I arrived at customs this morning.