CBP port code · Airport

Ontario International Airport, CA port code: 2721

The CBP port code for Ontario International Airport, CA is 2721; it is in the Los Angeles, CA customs district (district code 27).

All US port codes

Port code: 2721
District: 27
State: California

Port details

About port code 2721

Port code	2721
Port of entry	Ontario International Airport, CA
As listed	ONTARIO INTL AIRPORT, CA
Customs district	Los Angeles, CA (27)
State	California (CA)
Type	Airport
On CBP's list	Yes, ACE Appendix E (revised 3 February 2026)

Importing through Ontario International Airport, CA

Where the code goes

Where port code 2721 is used

The four-digit code identifies the port on US import paperwork. Your customs broker usually enters it, but importers and exporters see it on the documents.

CBP Form 7501

The entry summary takes Schedule D codes in the port code box (where the entry is filed) and in box 20, the U.S. port of unlading.

Carrier manifest

CBP publishes its port code list for import manifests filed in ACE. The carrier's manifest names the US port of unlading by this code.

ISF for ocean cargo

The importer, or its agent, files the Importer Security Filing at least 24 hours before the container is loaded abroad. CBP matches it to the manifest by bill of lading.

Questions

Port code 2721: FAQs

What is the port code for Ontario International Airport, CA?

The CBP port code for Ontario International Airport, CA is 2721. It is in the Los Angeles, CA customs district (district code 27).

Where is port code 2721 used?

On CBP Form 7501, the entry summary, four-digit Schedule D codes go in the port code box (the port where the entry is filed) and in box 20, the U.S. port of unlading. Carriers use the same codes for the port of unlading on their import manifests. Your customs broker normally fills these in.

Which customs district is Ontario International Airport, CA in?

The first two digits of a Schedule D code are its district, so 2721 is in the Los Angeles, CA customs district (district code 27). This list has 13 other ports of entry in that district.

How do I get a quote for shipping from India to Ontario International Airport?

Send Atmavaan the cargo, where it is made in India and the US delivery address. We quote the routing by sea or air, and can file the ISF for ocean cargo and arrange US customs clearance.

How current is this port code?

This page uses the Census Bureau's Schedule D district and port list (April 2025 edition), checked against CBP's ACE Appendix E port code list revised 3 February 2026. CBP opens, closes and renumbers ports from time to time, so confirm the code with your customs broker before filing.

Source: Census Bureau Schedule D district and port list (April 2025), checked against CBP's ACE Appendix E port codes (revised 3 February 2026); UN/LOCODE links from the UNECE code list. Public-domain US government data. Confirm codes with your customs broker before filing.