Port of Entry

A port of entry is any location designated by the federal government where goods, travelers, and conveyances may lawfully enter the United States under the supervision of Customs and Border Protection (CBP). There are over 300 official ports of entry across the country, including seaports, airports, and land border crossings. For importers, the port of entry is where their goods undergo customs examination, regulatory screening, and formal entry into U.S. commerce. The choice of port of entry affects transit time, customs processing speed, drayage costs, and the overall landed cost of imported goods.

Major Seaports

The busiest U.S. container seaports handle the majority of ocean freight imports. Los Angeles and Long Beach together form the San Pedro Bay port complex, processing over 9 million TEUs per year and handling roughly 40% of all containerized imports entering the U.S. New York/New Jersey is the largest East Coast port, serving as the primary gateway for goods destined for the Northeast and Midwest. Savannah has grown rapidly to become the third-busiest container port, benefiting from lower congestion, proximity to distribution centers in the Southeast, and competitive drayage rates. Houston and Charleston handle significant volumes, particularly for Gulf Coast and Southeast distribution.

The port of entry selection often depends on where the goods are ultimately heading. Inventory destined for Amazon fulfillment centers in California routes through Long Beach. Goods heading to FCs in the Southeast might enter through Savannah or Charleston. Products going to Midwest facilities could enter through any West Coast port (for rail transload to Chicago) or through an East Coast port for truck delivery.

Air Ports of Entry

Air cargo clears customs at designated airports with CBP cargo processing facilities. Major air cargo hubs include JFK (New York), LAX (Los Angeles), ORD (Chicago O’Hare), MIA (Miami), and ATL (Atlanta). Air freight imports follow a different customs process than ocean freight, with typically faster clearance times (hours rather than days) but higher per-unit transport costs. E-commerce sellers using air freight for urgent restocks or high-value, low-weight products clear their goods through whichever airport their air carrier routes to.

Land Border Crossings

Goods entering from Canada and Mexico clear customs at land border ports of entry. The busiest include Laredo, Texas (the largest U.S.-Mexico land port by value), Detroit, Michigan (primary U.S.-Canada crossing for automotive and manufacturing goods), and Buffalo, New York. USMCA (formerly NAFTA) trade flows through these crossings, with eligible goods entering at reduced or zero duty rates if they meet the agreement’s rules of origin requirements.

First Port of Arrival vs. Port of Entry

These terms are sometimes confused. The first port of arrival is the initial U.S. port where the vessel or aircraft arrives. The port of entry is where customs entry is formally filed and the goods are released into commerce. For ocean freight, these are usually the same location. But for goods arriving by vessel at Long Beach and then moving by rail in-bond to Chicago for customs clearance, Long Beach is the first port of arrival and Chicago is the port of entry. This in-bond transit option allows importers to clear goods closer to their final destination, sometimes resulting in faster overall delivery and lower inland transportation costs.

Choosing the Right Port of Entry

Importers consider several factors: proximity to the final warehouse or distribution point, port congestion levels, customs clearance speed at that location, available drayage or inland transportation options, and total cost. During the 2021-2022 port congestion crisis, many importers diverted cargo from Los Angeles/Long Beach to Houston, Charleston, and Savannah to avoid weeks-long vessel queues and terminal delays.

MeisterPrep operates warehouses near major ports of entry: Long Beach (serving the LA/LB port complex), Houston, Charleston, and Des Plaines (serving Chicago-area rail and air import traffic). This geographic spread allows sellers to route their imports through the most cost-effective or least congested port of entry and still have a nearby prep facility ready to receive, process, and forward their inventory to Amazon.