For the 2026 travel year, the "Maximum Allowable Yield" (the cap on what Heathrow can charge airlines per passenger) is approximately £26.09. This figure is determined by the Civil Aviation Authority (CAA) through the "H7" price control framework. While this is the amount Heathrow bills the airlines for using facilities, security, and baggage systems, the price you see on your ticket under "Passenger Service Charge" may vary slightly as airlines sometimes bundle other operational costs. This 2026 rate is part of a regulated effort to keep airport charges competitive while funding massive infrastructure upgrades, such as the Next Generation Security (NGS) scanners that are currently being rolled out across all terminals. It is a peer-to-peer "pro-tip" to note that these charges have actually fallen in real terms over the last decade, even as the airport invests billions into improving the "passenger experience" metrics that the CAA monitors.