Swansea to Portsmouth Harbour Trains

Swansea to Portsmouth Harbour trains

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Trip Overview

The average train between Swansea and Portsmouth Harbour takes 4h 33m and the fastest train takes 4h 16m. There is a train service every few hours from Swansea to Portsmouth Harbour. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

4h 33m
Duration: 185 mi
Distance: £99
Average price: Hourly
Frequency

Train

best

Take the train from Swansea to Cardiff Centraltrain Swansea - Cardiff Central / ...
Take the train from Cardiff Central to Portsmouth Harbourtrain Cardiff Central - Portsmouth Harbour

5h 21m

£78–158

Swansea to Portsmouth Harbour train times

Trains run hourly between Swansea and Portsmouth Harbour. The earliest departure is at 5:29 AM in the morning, and the last departure from Swansea is at 7:39 PM which arrives into Portsmouth Harbour at 11:56 PM. All services require a transfer at Cardiff Central and take an average of 4h 33m. The schedules shown below are for the next available departures.

Departing Sunday, August 23, 2026

7:55 AM → 12:51 PM
4h 56m • 1 change
9:23 AM → 1:51 PM
4h 28m • 1 change
10:22 AM → 2:51 PM
4h 29m • 1 change
11:23 AM → 3:52 PM
4h 29m • 1 change
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Departing Monday, August 24, 2026

5:29 AM → 9:53 AM
4h 24m • 1 change
6:26 AM → 10:52 AM
4h 26m • 1 change
7:18 AM → 11:52 AM
4h 34m • 1 change
8:23 AM → 12:52 PM
4h 29m • 1 change
Show more

Departing Tuesday, August 25, 2026

5:29 AM → 9:53 AM
4h 24m • 1 change
6:26 AM → 10:52 AM
4h 26m • 1 change
7:18 AM → 11:52 AM
4h 34m • 1 change
8:23 AM → 12:52 PM
4h 29m • 1 change
Show more

Departing Wednesday, August 26, 2026

5:29 AM → 9:53 AM
4h 24m • 1 change
6:26 AM → 10:52 AM
4h 26m • 1 change
7:18 AM → 11:52 AM
4h 34m • 1 change
8:23 AM → 12:52 PM
4h 29m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Swansea to Portsmouth Harbour? 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.