| IAC |
 Abbreviation for Indirect Air Carrier. |
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| IATA |
| Abbreviation for International Air Transportation Association. |
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| IATA Agent |
| A forwarder/broker who has been approved and is recognized by IATA to receive cargo, cut Air Waybills and other documents for carriers, and collect charges for air shipments. |
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| IATA Carrier |
| An airline which is a member of IATA and may accept, carry, and bill for air shipments. Intra-US counterpart is ATA. |
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| I.E. |
| Abbreviation for Immediate Exportation. |
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| I.T. |
| Abbreviation for Immediate Transport. |
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| Immediate Exportation |
| Document prepared at port of departure for a shipment traveling through the U.S., which will clear customs in a different country. |
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| Immediate Transport |
| A document prepared at the first U.S. port of entry or used to amend the initial documents indicating the shipment is ready to be transported onto the final U.S. customs airport. On the occasion where routing is altered, an immediate transport document must be reissued to ensure that customs can identify exact location of goods at all times until clearance is granted. |
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| Import |
| To bring foreign goods into a country. |
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| Import License |
| A document required and issued by some national governments authorizing importation of goods into their individual countries. See The Air Cargo Tariff - (TACT). |
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| Inbond |
| A term applied to air cargo coming into the United States. This designates a procedure under which U.S. Customs' clearance of cargo is postponed until the cargo reaches an inland customs point rather than at congested gateway cities. Cargo moves under the carrier's bond (posted with U.S. Customs) from the gateway to the inland customs port. |
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| Inbond Entry |
| Entry made at the first U.S. port by a bonded carrier or agent. |
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| Indirect Air Carrier |
| An entity which purchases cargo space from an airline and sells the space to other shippers. A freight forwarder is an indirect air carrier. |
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| Informal Entry |
| A simplified import entry procedure accepted at the option of U.S. customs for any non-commercial shipment (baggage) and any commercial shipment not over $1,000.00 USD in value. (Formal entries must be processed by broker due to value of commodities). |
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| Insurance |
| The coverage applying to Intra-US and international shipments written by The Insurance Company of North America. The policy insures all risks of physical loss or damage from any external cause. Sometimes referred to as shipper's interest insurance. |
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| Interline |
| A shipment routing via two or more successive carriers. |
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| Interline Agreement |
| A term meaning inter-airline, and is used to denote working relationships between or among airlines. |
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| International Air Transport Association (I.A.T.A) |
| The trade and service organization for airlines of more than 100 countries serving international routes. |
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| Interstate |
| A shipment traveling between states. |
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| Intra-US |
| A term used to indicate within the United States. |
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| Intrastate |
| A shipment originating and terminating within one state's boundaries. |
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| Issuing Carrier |
| The carrier who issues the Air Waybill. |
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