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Gatwick Express
Great Western Railway

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Low 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 from Watford Junction

It takes an average of 3h 55m to travel from Watford Junction to Portsmouth by train, over a distance of around 66 miles (105 km). There are normally 159 trains per day travelling from Watford Junction to Portsmouth and tickets for this journey start from £13 when you book in advance.

First train

03:07

Last train

00:40

Departure stationWatford Junction
Arrival stationPortsmouth
Journey time

From 2h 34m

Distance

66 miles (105 km)

Frequency

159 trains per day

Changes

1 change

Price

From £13

Train operators

Gatwick Express, Great Western Railway, London Overground, South Western Railway, Southern, Thameslink

What are the train times from Watford Junction to Portsmouth?

Check out the next trains departing from Watford Junction to Portsmouth for Tuesday 27th 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
11:5215:123h 20m, 2 changes
12:1615:363h 20m, 3 changes
12:5616:123h 16m, 2 changes
13:1616:363h 20m, 3 changes
13:5217:123h 20m, 2 changes
13:5217:423h 50m, 1 change
14:0217:423h 40m, 2 changes
14:1617:363h 20m, 3 changes
14:5218:123h 20m, 2 changes
15:1618:363h 20m, 3 changes

What are the train times from Watford Junction to Portsmouth?

Get from Watford Junction to Portsmouth in as little as 2 hours 34 minutes on the fastest trains, so you can make the most of your time.

The average train journey from Watford Junction to Portsmouth takes around 3 hours 55 minutes. There are around 159 trains that operate on this route daily.

As there are no direct trains between Watford Junction and Portsmouth, you'll need to make 1 change.

Trains on this route are operated by Great Western Railway, South Western Railway, Thameslink and Gatwick Express.

Tickets for this journey start from £13.00. 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 Watford Junction to Portsmouth?

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

How do I get from Watford Junction to Portsmouth?

You can travel from Watford Junction to Portsmouth by train in about 3 hours and 55 minutes. With around 159 trains running each day, taking the train is easy. Find out more in our Journey Planner.

How long is the train journey from Watford Junction to Portsmouth?

On average, the train journey from Watford Junction to Portsmouth takes around 3 hours and 55 minutes, with 159 trains per day. The duration may vary slightly depending on the specific train and any potential delays. Use our Journey Planner to check out more information.

How much is the train from Watford Junction to Portsmouth?

Train tickets from Watford Junction to Portsmouth start from as little as £13, depending on the time of booking, class of service and type of train. Booking in advance often results in cheaper prices.

What is the fastest train from Watford Junction to Portsmouth?

The fastest trains from Watford Junction to Portsmouth can cover the distance of 66 miles (105 km) in as little as 2 hours and 34 minutes.

How do I find cheap train tickets from Watford Junction 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 Watford Junction to Portsmouth start at £13§ 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 Watford Junction 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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