The average train between Southampton and Welwyn takes 2h 36m and the fastest train takes 2h 10m. There is an hourly train service from Southampton to Welwyn. 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 Southampton and Welwyn. The earliest departure is at 4:52 AM at night, and the last departure from Southampton is at 10:55 PM which arrives into Welwyn at 6:40 AM. All services require a transfer at London Waterloo Station and take an average of 2h 36m. The schedules shown below are for the next available departures.


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Want to know about travelling from Southampton to Welwyn? 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 Southampton to Welwyn. However, there are services departing from Southampton station and arriving at Welwyn station via London Waterloo. The journey, including transfers, takes approximately 2h 36m.
Southampton to Welwyn train services, operated by South Western Railway, depart from Southampton Central station.
Southampton to Welwyn train services, operated by South Western Railway, arrive at Welwyn North station.
Book your Southampton to Welwyn train tickets online with South Western Railway, London Underground (Tube) and Great Northern.
The distance between Southampton and Welwyn is 131.9 km. The road distance is 166 km.
You can take a train from Southampton Central to Welwyn North via London Waterloo Station, Waterloo station, Euston station, and King's Cross in around 2h 36m.