--- title: "US port code 3881: Oakland/Pontiac Airport, Michigan · Adhoc" description: "3881 is the US port of exit code for Oakland/Pontiac Airport, Michigan on Canadian customs declarations." canonical: "https://www.adhocs.ca/us-ports-of-exit/3881" last_updated: 2026-07-27 --- # 3881 Oakland/Pontiac Airport, Michigan US port of exit US port of exit · Airport 3881 is the US code for the port of Oakland/Pontiac Airport, Michigan. A Canadian declaration uses it when goods left the United States through Oakland/Pontiac Airport. - **Port code:** 3881 - **Port:** Oakland/Pontiac Airport - **State:** [Michigan](https://www.adhocs.ca/us-ports-of-exit/michigan) - **CBP district:** Detroit, MI - **Kind:** Airport ## Other US ports in Michigan - [3801](https://www.adhocs.ca/us-ports-of-exit/3801) Detroit (faces 0453, 0452) - [3802](https://www.adhocs.ca/us-ports-of-exit/3802) Port Huron (faces 0440) - [3803](https://www.adhocs.ca/us-ports-of-exit/3803) Sault Ste. Marie (faces 0441) - [3804](https://www.adhocs.ca/us-ports-of-exit/3804) Saginaw/Bay City (Port of entry) - [3805](https://www.adhocs.ca/us-ports-of-exit/3805) Battle Creek (Port of entry) - [3806](https://www.adhocs.ca/us-ports-of-exit/3806) Grand Rapids (Port of entry) - [3807](https://www.adhocs.ca/us-ports-of-exit/3807) Detroit Metro Airport, Detroit (Airport) - [3808](https://www.adhocs.ca/us-ports-of-exit/3808) Escanaba (Port of entry) - [3809](https://www.adhocs.ca/us-ports-of-exit/3809) Marquette (Port of entry) - [3814](https://www.adhocs.ca/us-ports-of-exit/3814) Algonac (faces 0465) - [3815](https://www.adhocs.ca/us-ports-of-exit/3815) Muskegon (Port of entry) - [3816](https://www.adhocs.ca/us-ports-of-exit/3816) Grand Haven (Port of entry) - [3818](https://www.adhocs.ca/us-ports-of-exit/3818) Rogers City (Port of entry) - [3819](https://www.adhocs.ca/us-ports-of-exit/3819) Detour (Port of entry) - [3842](https://www.adhocs.ca/us-ports-of-exit/3842) Presque Isle (Port of entry) - [3843](https://www.adhocs.ca/us-ports-of-exit/3843) Alpena (Port of entry) - [3882](https://www.adhocs.ca/us-ports-of-exit/3882) Willow Run Airport, Ypsilanti (Airport) - [3883](https://www.adhocs.ca/us-ports-of-exit/3883) Capital Region Intl Airport, Lansing (Airport) ## Good to know - **Which US port.** CBSA defines it as the US port where the truck or train crosses into Canada, or the one nearest to where it crosses. For goods sent by ship or plane, it is the US port where they were loaded. - **Courier shipments.** Low-value courier shipments name 1001, New York, as the US port of exit. Also in this directory: [CBSA offices](https://www.adhocs.ca/cbsa-offices) · [Warehouse codes](https://www.adhocs.ca/cbsa-warehouses) · [Border crossings](https://www.adhocs.ca/border-crossings) ## Questions ### What is US port code 3881? The code for the port of Oakland/Pontiac Airport, Michigan. On a Canadian declaration, it says the goods left the United States through it. ## Sources - [Ports of entry](https://www.cbp.gov/contact/ports), U.S. Customs and Border Protection - [Memorandum D17-1-10, Coding of Customs Accounting Documents](https://www.cbsa-asfc.gc.ca/publications/dm-md/d17/d17-1-10-eng.html), Canada Border Services Agency Adhoc is not affiliated with CBSA or CBP.