￡16.50 for a single or ￡32 for a return
The Heathrow Express train service runs to Peddington approximately every 15 min, and takes 15 – 20 mins. Tickets cost ￡16.50 for a single or ￡32 for a return.
single ticket とは one way ticket (片道) のことで、return とは round trip （往復）の事です
