Thinking of dropping someone at the airport? On average, it costs about £6.51...

https://dlf-ne.org/is-paying-two-barrier-fees-ever-the-right-move-at-uk-airports/

Thinking of dropping someone at the airport? On average, it costs about £6.51 to drop off, but places like Gatwick can be as steep as £10, while Heathrow charges around £7