Track any container moving through San Antonio and see the port's real activity: carriers calling, scheduled connections, and a measured congestion signal. Four independent lenses on every shipment.
The fastest way to follow a container through San Antonio is to enter your reference at trackingmcp.com/ports/clsai. TrackingMCP detects the carrier and format, then shows carrier milestones, live vessel position, the published schedule, and a forecast ETA on one screen; DCSA-normalised across 234+ ocean lines.
Any carrier calling San Antonio: we detect the line and format automatically.
Daily signal, 9 July 2026 to 19 July 2026; dashed line marks the port's typical baseline.
As of 19 July 2026, port-call throughput at San Antonio was 1% below its typical baseline, on 19 calls in the trailing 7 days. Derived from AIS port-call observations via IMF PortWatch open data; inside the tracker this signal refreshes continuously and feeds each shipment's ETA-at-risk flag.
San Antonio appears in 786 scheduled port calls in TrackingMCP's sailing database (January 2025 to January 2027 schedule window), with 14 carriers we track calling the port. Track any of them by container, bill of lading, or booking number.
Port reference facts last reviewed 10 July 2026.
CLSAI. The five-character UN/LOCODE (CL for Chile, plus SAI) identifies San Antonio in carrier schedules, booking confirmations, and tracking feeds worldwide.
Enter your container number, bill of lading, or booking reference in the search box above. TrackingMCP auto-detects the carrier and format, then returns live carrier events, the vessel's AIS position, and a forecast ETA. Your first shipment is free, no account needed to start.
ONE, COSCO, CMA CGM lead the 14 carriers with scheduled sailings calling San Antonio in TrackingMCP's sailing database. Each line links to its own tracking page below.
As of 19 July 2026, AIS port-call data (via IMF PortWatch) put San Antonio's 7-day throughput 1% below its typical baseline, on 19 port calls in 7 days; the signal level reads mild. Signals refresh continuously inside the tracker; this page shows the snapshot from its last build.
Ningbo, Shanghai, Los Angeles, Miami, Arica, Houston see the most scheduled sailings to and from San Antonio in TrackingMCP's sailing database.
San Antonio handles around 1,700,000 TEU a year, according to the port's published statistics and public registries.
Free time is set by each carrier's tariff for Chile, not by the port. The TrackingMCP free-time reference lists published demurrage and detention free days for Chile by carrier, and the tracker watches the free-time clock on every shipment.