The average train between Swansea and Kings Cross takes 3h 8m and the fastest train takes 2h 59m. There is a train service every few hours from Swansea to Kings Cross. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run hourly between Swansea and Kings Cross. The earliest departure is at 3:46 AM at night, and the last departure from Swansea is at 8:23 PM which arrives into Kings Cross at 11:29 PM. All services require a transfer at London Paddington and take an average of 3h 8m. The schedules shown below are for the next available departures.

3h 14m • 1 change

3h 9m • 1 change

3h 1m • 1 change

3h 2m • 1 change

3h 49m • 1 change

3h 2m • 1 change

3h 6m • 1 change

3h 9m • 1 change

3h 49m • 1 change

3h 2m • 1 change

3h 6m • 1 change

3h 9m • 1 change
Want to know about travelling from Swansea to Kings Cross? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Swansea to Kings Cross. However, there are services departing from Swansea station and arriving at Kings Cross station via London Paddington. The journey, including transfers, takes approximately 3h 8m.
Swansea to Kings Cross train services, operated by Great Western Railway (GWR), depart from Swansea station.
Swansea to Kings Cross train services, operated by Great Western Railway (GWR), arrive at London Paddington station.
Book your Swansea to Kings Cross train tickets online with Great Western Railway (GWR) and London Underground (Tube).
The distance between Swansea and Kings Cross is 264.2 km. The road distance is 310 km.
Great Western Railway (GWR) operates a train from Swansea to London Paddington hourly. Tickets cost £85–160 and the journey takes 2h 52m.