Three things make this corridor unusually kind to a hand carry. The first is the evening bank: most transatlantic departures from the eastern half of the United States leave between late afternoon and late evening and land in Europe the following morning, which converts a same-day collection into a next-morning delivery without anyone doing anything clever. The second is gateway density, New York, Newark, Boston, Philadelphia, Washington, Atlanta, Charlotte, Detroit, Chicago, Minneapolis, Dallas, Houston, Denver, Phoenix, Seattle, San Francisco and Los Angeles all carry scheduled service to Europe, so the courier usually leaves from the airport nearest the goods rather than the airport nearest the airline.
The third is the customs union at the far end. Sixteen of the seventeen destinations below sit inside the European Union or inside its customs and single market arrangements, which means one entry procedure covers a great deal of ground. A consignment cleared into Frankfurt can continue to Milan or Warsaw without a second import. The United Kingdom and Switzerland are the exceptions and are treated as exceptions on their own pages, because pretending otherwise is how a courier ends up standing at a customs desk with the wrong paperwork.
What that leaves is the part people underestimate: the American end. Export control classification, the electronic export filing where the value or the commodity requires one, and whether the item is on a licence list are decided before anyone buys a ticket. On the great majority of consignments none of that bites. On a small and important minority it decides the whole assignment, which is why we ask what the item is at quotation rather than at the airport.
