Hundreds of people spend £2.40 making a 45-second Tube journey between two central London stations every week.
Covent Garden and Leicester Square are the closest stations on the London Underground, with their platforms on the Piccadilly line less than 300 yards apart.
Figures obtained by the Daily Telegraph under Freedom of Information laws say an average of 531 people travel from Covent Garden to Leicester Square each week, with 331 travelling the other way.
Over the course of a year, this adds up to £100,000 of revenue.
The equivalent journeys above ground would only take four minutes on foot.
This is also encouraged by numerous signs at Leicester Square station.
While the Tube journey itself is only 45 seconds, the overall journey including entering and exiting the station could actually end up taking longer than walking.
And the figure could be even higher as the data only covers those using Oyster cards or other contactless payments, the paper added.
