# Interline Transportation Agreements

*Last updated: 2026-06-25*

> An interline transportation agreement is a contract between two or more carriers – airlines, railroads, shipping lines, or freight forwarders – that allows cargo or passengers to move on a single transport document across multiple networks.

An interline transportation agreement is a contract between two or more carriers – airlines, railroads, shipping lines, or freight forwarders – that allows cargo or passengers to move on a single transport document across multiple networks. The agreement governs how liability, tariffs, and revenues are allocated among the participating carriers and defines the operational handover procedures at interchange points. For the shipper, this translates into one transport document, one accountable party, and a continuous chain of liability – even when a shipment transits three separate carrier networks. In air freight, interline agreements are particularly widespread and commonly follow IATA framework rules. They are distinct from codeshare agreements, which concern the joint marketing of passenger flights and do not cover the physical forwarding of cargo.

**Source:** [https://www.iata.org/en/programs/cargo/e/interline/](https://www.iata.org/en/programs/cargo/e/interline/)

## Quick Facts

| Property | Value |
|---|---|
| Term | Interline Transportation Agreements |
| Language | EN |
| Word count | 124 |
| Last updated | 2026-06-25 |
| Source | https://www.iata.org/en/programs/cargo/e/interline/ |

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