How much does a cheap train ticket from London to Portsmouth cost?

The average train ticket price from London to Portsmouth is £50. The best way to find cheap train tickets from London to Portsmouth is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!

How long is the train trip from London to Portsmouth?

A train trip between London and Portsmouth is around 2h 8m, although the fastest train will take about 1h 22m. This is the time it takes to travel the 65 miles that separates the two cities.

How many daily train are there between London and Portsmouth?

The number of trains from London to Portsmouth can differ depending on the day of the week. On average, there are 41. Some trains are direct while others include transferring trains. Simplify your train trip from London to Portsmouth by comparing and selecting the train that fits your travel style and budget on Busbud.

Which train companies travel from London to Portsmouth?

When taking the train from London to Portsmouth, you can travel comfortably and safely with South Western Railway, Southern.

Train London to Portsmouth from £11

Next departures

Next departures from London to Portsmouth on 10 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
15:00	Waterloo	1h 38m	16:38	Portsmouth Harbour	Cheapest
08:00	Waterloo	1h 32m	09:32	Portsmouth and Southsea	Fastest
07:23	Clapham Junction	1h 41m	09:04	Portsmouth and Southsea	No tags
07:42	Clapham Junction	1h 58m	09:40	Portsmouth and Southsea	No tags
07:23	Clapham Junction	1h 41m	09:04	Portsmouth and Southsea	No tags

Next departures from London to Portsmouth on 11 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
15:05	Victoria Rail Station	2h 14m	17:19	Portsmouth and Southsea	Cheapest
08:00	Waterloo	1h 32m	09:32	Portsmouth and Southsea	Fastest
07:04	Barnes	2h	09:04	Portsmouth and Southsea	No tags
07:42	Clapham Junction	1h 58m	09:40	Portsmouth and Southsea	No tags
07:04	Barnes	2h	09:04	Portsmouth and Southsea	No tags

Next departures from London to Portsmouth on 12 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
09:17	North Dulwich	2h 20m	11:37	Portsmouth and Southsea	Cheapest
08:00	Waterloo	1h 32m	09:32	Portsmouth and Southsea	Fastest
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags
07:04	Barnes	2h	09:04	Portsmouth and Southsea	No tags
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags

Next departures from London to Portsmouth on 13 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
09:29	Streatham	2h 8m	11:37	Portsmouth and Southsea	Cheapest
08:00	Waterloo	1h 32m	09:32	Portsmouth and Southsea	Fastest
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags
07:04	Barnes	2h	09:04	Portsmouth and Southsea	No tags
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags

Next departures from London to Portsmouth on 14 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
09:29	Streatham	2h 8m	11:37	Portsmouth and Southsea	Cheapest
08:00	Waterloo	1h 32m	09:32	Portsmouth and Southsea	Fastest
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags
07:04	Barnes	2h	09:04	Portsmouth and Southsea	No tags
08:29	Streatham	2h 9m	10:38	Portsmouth and Southsea	No tags

Next departures from London to Portsmouth on 16 November
Departure time	Departure location	Trip duration	Arrival time	Arrival location	Recommended
08:03	Clapham Junction	2h 10m	10:13	Portsmouth and Southsea	Cheapest
16:12	Clapham Junction	2h 1m	18:13	Portsmouth and Southsea	Fastest
07:05	Streatham	3h	10:05	Portsmouth and Southsea	No tags
07:23	Barnes	2h 50m	10:13	Portsmouth and Southsea	No tags
07:05	Streatham	3h	10:05	Portsmouth and Southsea	No tags

Last refresh of the prices: Yesterday at 23:12 GMT.

Compare 3 ways to travel from London to Portsmouth

We recommend carpooling

Among the sustainable travel choices, the carpool stands out as a good way to reach Portsmouth. The journey takes about 2 hours 20 minutes and with fares starting at just £7, it presents an excellent value for a comfortable ride.

1carpool per day

2h 20mAverage duration

64 milesDistance

4kgCO₂ emissions

	Average price	Average duration	CO₂ emissions
Bus	Average price£5 - £24	Average duration2h 15m	CO₂ emissions 2kg CO₂e
Train	Average price£12 - £103	Average duration2h 8m	CO₂ emissions 2kg CO₂e
Carpool	Average price£7 - £7	Average duration2h 20m	CO₂ emissions 4kg CO₂e

Train Companies

South Western Railway

4/524 reviews

Staff4.5

Timeliness4.1

Cleanliness4.5

WiFi3.4

Southern

4/534 reviews

Staff5

Timeliness5

Cleanliness5

WiFi5

GB train companies: Amtrak, Trenitalia, Renfe, VIA Rail Canada, RegioJet, FlixTrain, CrossCountry

Frequently asked questions on the trip London - Portsmouth

How much does a cheap train ticket from London to Portsmouth cost?
The average train ticket price from London to Portsmouth is £50. The best way to find cheap train tickets from London to Portsmouth is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!
How long is the train trip from London to Portsmouth?
A train trip between London and Portsmouth is around 2h 8m, although the fastest train will take about 1h 22m. This is the time it takes to travel the 65 miles that separates the two cities.
How many daily train are there between London and Portsmouth?
The number of trains from London to Portsmouth can differ depending on the day of the week. On average, there are 41. Some trains are direct while others include transferring trains. Simplify your train trip from London to Portsmouth by comparing and selecting the train that fits your travel style and budget on Busbud.
Which train companies travel from London to Portsmouth?
When taking the train from London to Portsmouth, you can travel comfortably and safely with South Western Railway, Southern.

Find cheapest prices for trains

Price is for a one-way ticket for one passenger and based on past searches.

Best price found

07/11

£22

08/11

£22

Today

£20

10/11

£14

11/11

£12

12/11

£12

13/11

£17

14/11

£17

The cheapest trip from London to Portsmouth was searched and found on 11 Nov 2025 with a price of £12

To save money and be sure you have the best seat, it's a good idea to buy your train tickets from London to Portsmouth as early as possible.

You can expect to pay from £12 to £96 for a train ticket from London to Portsmouth based on the last 2 days. You can expect to find the cheapest price for the trip at £12, which is on 2025-11-11.

Usually South Western Railway will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.

Top Travelled Train Routes

Why choose Busbud?

The Best Way To Book Bus and Train Tickets

Busbud makes bus travel easy. We help travellers find a bus, plot routes, and book intercity bus tickets all over the world. With several language and currency options available, Busbud seeks to cater to international bus travellers no matter where they are in the world. Busbud prides itself on its worldwide partnerships. We make it possible for you to buy tickets with its large network of trustworthy bus partners like Greyhound, Eurolines, ALSA, OUIBUS (BlaBlaBus), National Express and many others.