CBP port code · Airport
Houston Intercontinental Airport, TX port code: 5309
The CBP port code for Houston Intercontinental Airport, TX is 5309; it is in the Houston-Galveston, TX customs district (district code 53).
- Port code
- 5309
- District
- 53
- State
- Texas
- UN/LOCODE
- USIA9
Port details
About port code 5309
| Port code | 5309 |
|---|---|
| Port of entry | Houston Intercontinental Airport, TX |
| As listed | HOUSTON INTERCONTL AIRP, TX |
| Customs district | Houston-Galveston, TX (53) |
| State | Texas (TX) |
| Type | Airport |
| UN/LOCODE | USIA9 (George Bush Intercontinental Apt/Houston): Airport |
| On CBP's list | Yes, ACE Appendix E (revised 3 February 2026) |
Importing through Houston Intercontinental Airport, TX
Where the code goes
Where port code 5309 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 5309: FAQs
What is the port code for Houston Intercontinental Airport, TX?
The CBP port code for Houston Intercontinental Airport, TX is 5309. It is in the Houston-Galveston, TX customs district (district code 53).
Where is port code 5309 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 Houston Intercontinental Airport, TX in?
The first two digits of a Schedule D code are its district, so 5309 is in the Houston-Galveston, TX customs district (district code 53). This list has 7 other ports of entry in that district.
Is 5309 the same as the UN/LOCODE for Houston Intercontinental Airport?
No. 5309 is the US customs code. USIA9 is the UN/LOCODE, the international location code carriers use on bookings and bills of lading. Give the carrier the UN/LOCODE and your customs broker the Schedule D code.
How do I get a quote for shipping from India to Houston Intercontinental 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.
Other ports in Houston-Galveston, TX (53)
Shipping from India to Houston Intercontinental Airport, TX?
Send the cargo and where it is made. A named Atmavaan specialist replies with a rate and the routing.
Vessel Schedules from Leading Global Shipping Lines
Instant vessel schedules from trusted global shipping liners.
Chat