CrossCountry
Great Western Railway
Looking for the cheapest date to travel?
Within 7 days
Outbound fromWithin 1 month
Outbound fromWithin 3 months
Outbound fromLow prices found by our customers
Each fare is the lowest adult economy ticket fare found by our customers on Trainline. Fares booked further in advance than the dates displayed may be cheaper. Prices are updated daily, subject to change and indicative of price last update. Limited availability. Discount cards and coach journeys excluded, prices exclusive of booking fee.
Trains to Portsmouth Harbour from Carmarthen
It takes an average of 7h 5m to travel from Carmarthen to Portsmouth Harbour by train, over a distance of around 156 miles (251 km). There are normally 42 trains per day travelling from Carmarthen to Portsmouth Harbour and tickets for this journey start from £72.30 when you book in advance.
| First train | 03:37 | |
|---|---|---|
| Last train | 22:41 | |
| Departure station | Carmarthen | |
| Arrival station | Portsmouth Harbour | |
| Journey time | From 5h 16m | |
| Distance | 156 miles (251 km) | |
| Frequency | 42 trains per day | |
| Changes | 1 change | |
| Price | From £72.30 | |
| Train operators | CrossCountry, Great Western Railway, South Western Railway, Transport for Wales |
What are the train times from Carmarthen to Portsmouth Harbour?
Get from Carmarthen to Portsmouth Harbour in as little as 5 hours 16 minutes on the fastest trains, so you can make the most of your time.
The average train journey from Carmarthen to Portsmouth Harbour takes around 7 hours 5 minutes. There are around 42 trains that operate on this route daily.
As there are no direct trains between Carmarthen and Portsmouth Harbour, you'll need to make 1 change.
Trains on this route are operated by Great Western Railway, Transport for Wales, South Western Railway and CrossCountry.
Tickets for this journey start from £72.30. Booking in advance often results in cheaper ticket prices.
With our Journey Planner, you can check live train times, compare prices and check routes.
What do people frequently ask about the train journey from Carmarthen to Portsmouth Harbour?
Want to know more about your journey from Carmarthen to Portsmouth Harbour? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.
Are there any direct trains from Carmarthen to Portsmouth Harbour?
How far is the train ride from Carmarthen to Portsmouth Harbour?
Can I take a flight-free trip from Carmarthen to Portsmouth Harbour?
What is the best way to travel to Portsmouth Harbour from Carmarthen?
What time does the first train run from Carmarthen to Portsmouth Harbour?
How late does the train from Carmarthen to Portsmouth Harbour run?
How many trains go from Carmarthen to Portsmouth Harbour per day?
When do tickets from Carmarthen to Portsmouth Harbour go on sale?
Planning a round trip from Carmarthen to Portsmouth Harbour?
How do I find cheap train tickets from Carmarthen to Portsmouth Harbour?
As most UK train companies increase their prices as the departure date approaches, our Trainline team of experts have put together these tips to help you find the cheapest tickets.
1. Book in advance
Train tickets from Carmarthen to Portsmouth Harbour start at £72.30§ one way for a Standard Class ticket if you book in advance. UK train companies usually release Advance tickets up to 12 weeks ahead of time, and these can be cheaper than tickets bought on the day of travel.
2. Sign up to Ticket Alert
If you're planning a trip more than 12 weeks ahead, sign up to our Ticket Alert to get notified when Advance tickets are released for your travel date.
3. Use a Railcard
National Railcards offer a 1/3 off eligible train tickets in the UK and can be a great investment if you travel throughout the year. Buy one with us and you'll be able to store it digitally in our app, so you'll always have it on your travels.
4. Book split tickets
Our handy feature SplitSave will 'split' your train journey into multiple tickets, which can be much cheaper than buying a single ticket. Find out more about split tickets.
5. Travel Off-Peak
If you can be flexible with your travel times, Off-Peak and Super Off-Peak tickets are usually cheaper in the UK. Generally, Off-Peak times are any time at weekends and outside of Monday to Friday morning and evening rush hours.
6. Consider a Season Ticket
Best for commuters, if you catch a train on the same route more than 3 times per week, you could save money with a Season Ticket. With annual, monthly, weekly and flexi options available, find out if a Season Ticket for Carmarthen to Portsmouth Harbour is right for you.
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.
§Advance adult single fare. Excludes booking fee. Prices seen by Trainline customers in the last 30 days. Availability limited.