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Trains from Radlett to Portsmouth

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South Western Railway

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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.
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  3. Radlett to Portsmouth

Trains to Portsmouth from Radlett

It takes an average of 3h 13m to travel from Radlett to Portsmouth by train, over a distance of around 68 miles (110 km). There are normally 39 trains per day travelling from Radlett to Portsmouth and tickets for this journey start from £17.30 when you book in advance.

First train

03:01

Last train

02:01

Departure stationRadlett
Arrival stationPortsmouth
Journey time

From 2h 43m

Distance

68 miles (110 km)

Frequency

39 trains per day

Changes

1 change

Price

From £17.30

Train operators

London Overground, South Western Railway, Southeastern, Southern, Thameslink

What are the train times from Radlett to Portsmouth?

Check out the next trains departing from Radlett to Portsmouth for Tuesday 13th October 2026 using our handy timetable below, including platform and live travel information. You can view the full day timetable or search for a different date here.
DepartsArrivesDuration
12:1615:163h 0m, 2 changes
12:4215:443h 2m, 2 changes
12:4615:473h 1m, 2 changes
13:1215:592h 47m, 2 changes
13:1616:163h 0m, 2 changes
13:4216:342h 52m, 2 changes
13:4616:473h 1m, 2 changes
14:1217:163h 4m, 2 changes
14:1617:193h 3m, 2 changes
14:4217:342h 52m, 2 changes

Plan your journey from Radlett to Portsmouth

Considering a trip to Portsmouth and need more information on how to take the train from Radlett to Portsmouth? Start your search with us today!

Usually, the train from Radlett to Portsmouth takes around 3 hours 13 minutes. Every day, there are around 39 trains running on this popular route.

There will be 1 change on your journey from Radlett to Portsmouth, as there are no direct trains.

Trains on this route are operated by South Western Railway, Southeastern, Thameslink and London Overground.

From Radlett to Portsmouth, tickets start from just £17.30. Booking tickets in advance can be cheaper than buying on the day of travel.

Use our Journey Planner to pick the dates and times you want to travel, and we’ll give you all the options.

What do people frequently ask about the train journey from Radlett to Portsmouth?

Want to know more about your journey from Radlett to Portsmouth? We've compiled some of the most frequently asked questions by our customers to help you plan your journey.

How do you get to Portsmouth from Radlett?

To travel to Portsmouth from Radlett, you can take the train - on average, the journey takes around 3 hours and 13 minutes, though the fastest trains can take 2 hours and 43 minutes. Use our Journey Planner to get more information.

How long is the train ride from Radlett to Portsmouth?

Trains from Radlett to Portsmouth take an average of 3 hours and 13 minutes, although on the fastest services it can take just 2 hours and 43 minutes. You'll usually find 39 trains per day on this route, so use our Journey Planner to check specific dates as times may vary.

How much does it cost to get from Radlett to Portsmouth by train?

Train tickets from Radlett to Portsmouth can start from £17.30 when booked in advance, but they’re usually more expensive if bought on the day of travel. Prices may also vary depending on the time of day, route, and class you choose.

What is the quickest journey time between Radlett and Portsmouth by train?

The quickest journey time between Radlett and Portsmouth by train is 2 hours and 43 minutes.

How do I find cheap train tickets from Radlett to Portsmouth?

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 Radlett to Portsmouth start at £17.30§ 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 Radlett to Portsmouth 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.
† Average savings on advance fares booked at least one week before day of travel vs Anytime fares purchased on day of travel. Subject to availability. Excludes coach.

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