# codeshare

> English word · Noun · frequency rank #99,113

## Definitions
1. An agreement whereby an airline buys space on another airline and markets the extra space as its own. Often used to increase a route network without the costs of running a full service.

## Etymology
From code + share, because of the change in the flight's two-letter airline identity code. One aircraft will have two or more codes and flight numbers.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/codeshare