Cheap trains from Reading to London St Pancras International

Find live fares for trains from Reading (RDG) to London St Pancras International (STP) across every UK rail operator. Compare direct services, split-ticket savings, and the cheapest day to travel — all priced live, for a flat £1 service fee (or £1/month unlimited).

Prices update live from every UK train operator's booking system, so the headline fare here matches what you'd see clicking through to book. Split-ticket prices are where the bigger savings live: by buying two single tickets that together cover the same journey, you can pay less than the through-fare on many routes. Our planner finds those splits automatically.

Want to find the absolute cheapest day to travel between Reading and London St Pancras International this month? Try the cheapest-days calendar — it shows the lowest fare we can find for every day in the next 60.