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Trains from Cardiff Bay to
Sea Mills

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Cardiff Bay to Sea Mills by train

A train trip from Cardiff Bay to Sea Mills takes about 2hrs 17 mins on average, covering roughly 22 miles (35 kilometres). With around 30 trains running each day, there's plenty of flexibility for your travel plans. If you book in advance, you can grab tickets starting from just £16.90, making it a budget-friendly option for those who plan ahead.

Cardiff Bay to Sea Mills Key Stats

Arrival Station

Sea Mills

Departure Station

Cardiff Bay

Frequency

30trains
per day

Journey Time

from1hrs 53 mins

Changes

3-3no direct
trains

First Train / Last Train

06:38 / 00:05

Distance

22miles
(35 km)

2 Routes

2 Train Operators

Prices

from£16.90

Travelling from Cardiff Bay to Sea Mills by Train

Hop on a Train from Cardiff Bay to Sea Mills – It’s Faster Than You Think!

Planning to travel from Cardiff Bay to Sea Mills by train? Well, you've come to the right place – and don’t worry, it won’t take forever!

On average, the journey takes around 2hrs 17 mins. But if you’re in a hurry (or just really eager to get to Sea Mills), the fastest trains can whisk you there in just 1hrs 53 mins. With roughly 30 trains running every day, you're spoiled for choice. This scenic 22-mile (35 km) journey usually requires just one change. You’ll be in the good hands of GWR, Transport for Wales, all of whom offer comfy seats and plenty of luggage space – because, let’s face it, nobody likes a cramped train!

The best part? Tickets start from just £16.90 if you book in advance, which is a much better deal than scrambling for tickets on the day. Want to save even more? Travelling during Off-Peak hours or flashing a Railcard can help you keep more money in your wallet.

So, ready to snag those cheap tickets? Use our Journey Planner to find the latest prices and make your wallet happy. Keep scrolling for more travel tips, or check out our timetable above for live train times. Time to choo-choo your way to Sea Mills!

Journey Details

Frequently asked questions about journeys between Cardiff Bay and Sea Mills

Curious about your trip from Cardiff Bay to Sea Mills? We've put together answers to the most commonly asked questions from our customers to make planning your journey easier.

How long does it take to travel between Cardiff Bay and Sea Mills by train?

The travel time between Cardiff Bay and Sea Mills by train varies depending on the type of train and the route, but the average journey time is 2hrs 17 mins & the fastest journey takes 1hrs 53 mins.

What's the fastest journey time between Cardiff Bay and Sea Mills by train?

The fastest journey time by train from Cardiff Bay to Sea Mills is 1hrs 53 mins.

How much does the train from Cardiff Bay to Sea Mills cost?

Train ticket prices from Cardiff Bay to Sea Mills can start from as little as £16.90 when you book in advance. The cost of tickets can vary depending on the time of day, route and class you book and are usually more expensive if you book on the day.

What are the departure and arrival times for trains between Cardiff Bay and Sea Mills?

The departure and arrival times for trains between Cardiff Bay and Sea Mills vary depending on the day of the week and the type of train. Generally, there are around 30 departures and arrivals throughout the day. The first departure is 06:38, and the last train of the day leaves at 00:05.

What is the difference between first class and standard class on trains between Cardiff Bay and Sea Mills?

First class tickets on trains between Cardiff Bay and Sea Mills typically offer more space, complimentary food and drink, and other amenities compared to standard class.

What amenities are available on trains between Cardiff Bay and Sea Mills?

Amenities on trains between Cardiff Bay and Sea Mills can include free Wi-Fi, power outlets, onboard catering, and comfortable seating.

What is the cheapest way to travel from Cardiff Bay to Sea Mills by train?

By booking your tickets on traintickets.com! There are many ways to save on the cost of train travel between Cardiff Bay and Sea Mills. On traintickets.com, we do all the work for you to find the cheapest way possible to get to Sea Mills, and can save you up to 90%! Simply search for your journey, and be assured we have found you the best possible price.

Is it possible to take a direct train from Cardiff Bay to Sea Mills?

No, unfortunately there are no direct trains between Cardiff Bay & Sea Mills. However, there are 30 possible journeys which require a change.

What train companies run services from Cardiff Bay to Sea Mills?

GWR and Transport for Wales are the main train operating companies running services between Cardiff Bay and Sea Mills.

Can I bring luggage on board trains between Cardiff Bay and Sea Mills?

Yes, you can bring luggage on board trains between Cardiff Bay and Sea Mills, but there may be limits on the number of bags or the size and weight of your luggage.

When are Cardiff Bay to Sea Mills Train Times?

Check out the upcoming trains from Cardiff Bay to Sea Mills on Monday 5th May 2025, with our handy timetable below.

Alternatively, you can view the full day's schedule or search for a different date here!

Monday 5th May
DepartsArrivesChangesVia StationsDurationOperator
11:38 Cardiff Bay13:31 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 53 mins Get Tickets
12:08 Cardiff Bay14:05 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 57 mins Get Tickets
12:38 Cardiff Bay14:31 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 53 mins Get Tickets
12:56 Cardiff Bay15:04 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
2 hrs 8 mins Get Tickets
13:38 Cardiff Bay15:31 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 53 mins Get Tickets
14:08 Cardiff Bay16:05 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 57 mins Get Tickets
14:38 Cardiff Bay16:31 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 53 mins Get Tickets
15:08 Cardiff Bay17:05 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 57 mins Get Tickets
15:38 Cardiff Bay17:32 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 54 mins Get Tickets
15:56 Cardiff Bay18:05 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
2 hrs 9 mins Get Tickets
16:38 Cardiff Bay18:32 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
1 hrs 54 mins Get Tickets
16:56 Cardiff Bay19:05 Sea Mills3 changesCardiff Queen Street
Cardiff Central
Bristol Temple Meads
2 hrs 9 mins Get Tickets
Search all times & prices for today

What are my cheap ticket options for Cardiff Bay to Sea Mills journeys?

From booking in Advance, to our FairSplits, here are our tips for you to find the best price

Advance Tickets

A single ticket for one journey leaving at a specific date and time.

The rule is: the sooner you book the cheaper they are. Usually the cheapest, but least flexible.

Off-Peak & Super Off-Peak Tickets

Offering greater flexibility than Advances, Off-Peak tickets offer travel during less busy times of day trading off more flexibility in the Off-Peak windows but for still discounted fares.

Off Peak fares from Cardiff Bay to Sea Mills start from £16.90 one way, or £17.00 return

Anytime Tickets

Anytime tickets are fully flexible allowing travel at any time of the day. Brilliant if you don’t want the pressure of clock watching, returning when you want

Anytime fares from Cardiff Bay to Sea Mills are available for £23.90 one way, or £27.70 return

With our FairSplit technology, you can save up to 90% on the cost of train travel.

Split ticketing means that instead of purchasing one rail ticket for your journey we automatically find and help you book two or more tickets instead, covering exactly the same journey. We call it our FairSplit.

Travelling in a group? We can save you even more!

Unlike other split ticketing sites, you can enter multiple railcards in a single search on traintickets.com. We will find you the best price using all possible combinations of your railcards in conjunction with our split ticketing technology & GroupSave.

When you do a search on traintickets.com we check all the cheapest prices automatically

Everything you need to know about Cardiff Bay Station

Explore Cardiff Bay Train Station: Your Gateway to Adventure

Looking to explore the beautiful Cardiff Bay area or need a convenient station for your daily commute? Cardiff Bay Train Station is a hub poised to cater to every traveler, whether you're visiting for leisure or business. Although a smaller station, it offers essential services to kickstart your journey with ease.

Facilities at Cardiff Bay Station

While Cardiff Bay Train Station may not boast extensive amenities, it does efficiently cover the key necessities for travelers. You won't find a ticket office but don’t fret! Ticket machines are there to facilitate collection of pre-purchased tickets, accept both cash and cards, and are accessible for all travelers, including those who use wheelchairs. Notably, the station provides step-free access from Bute Street and Lloyd George Avenue, maintaining its 'Category A' accessibility status.

For those curious about smart travel, Cardiff Bay does not issue smartcards, but validators are available for use. And should you need assistance, a help point is there, alongside departure and arrival screens, ensuring you’re kept in the loop about train statuses. Be sure to take advantage of the assistance service, which permits bookings up to two hours before your trip starts. Whenever needed, contacting the Transport for Wales Customer Relations team is a few clicks away.

Getting There and Away: Transport Connections

Effortlessly commute in and out of Cardiff Bay with the station’s array of transport links. A strategically placed rail replacement bus stop awaits on Bute Street, and bus services are conveniently available right outside the station. If you fancy cycling over public transport, Nextbike/Ovo bike sharing has you covered, with docking stations ready at Lloyd George Avenue for exploring the city on two wheels.

Travel Inspiration: Destinations from Cardiff Bay

Cardiff Bay is more than just a starting point; it’s a gateway to numerous popular destinations throughout Wales. Plan a quick trip to Cardiff Queen Street for shopping or head towards Cardiff Central for further connections. Delight in a scenic ride to Barry Island, or join the cultural festivities in Swansea. Whether for work or pleasure, hopping on a train from Cardiff Bay will take you anywhere you need to go with ease.

Wrap Up Your Cardiff Journey

While it may not resemble the grand European stations with vast facilities, Cardiff Bay Train Station still holds its charm. Simple, efficient, and conveniently located, it stands ready to cater to your travel needs without hassle. So, plan your trip, grab your tickets, and let Cardiff Bay Train Station be your gateway to exploring the vibrant scenes and serene landscapes of Wales.

Need more detailed travel information or want to organize your tickets beforehand? Visit National Rail's official website for a seamless experience.

Everything you need to know about Sea Mills Station

Discovering Sea Mills Station

Sea Mills train station might not be the largest stop along your journey, but it certainly holds its own charm and practicality for local travelers and those passing through the South West of England. Nestled in a picturesque location of Bristol, Sea Mills is a small yet vital station with essential connections for commuters and visitors alike.

The station lacks a ticket office and ticket machine, so if you're planning to travel from Sea Mills, ensure you purchase your rail tickets online or by other means before arriving at the station. For those needing assistance, rest easy knowing there is a help point on site where you can obtain information from staff.

Facilities and Amenities at Sea Mills Station

While Sea Mills station doesn't boast a full range of facilities, it does not compromise in providing the essential services expected of a UK railway station. Unfortunately, there are no waiting rooms or refreshment facilities available, but there is a seating area to ensure a comfortable wait for your train. Accessibility at the station is fair; a steep ramp provides access to the platform, and the provision of a ramp for train access makes traveling with mobility aids possible.

Travelers looking for restrooms or ATMs will have to plan accordingly, as these amenities are not available at Sea Mills. However, there is bicycle storage with four spaces that can come in handy for cyclists wanting to integrate a bike ride into their commute.

Onward Travel Options

When your journey starts or ends at Sea Mills, you have various options for onward travel. While there is no dedicated taxi service available directly at the station, several bus stops are conveniently located on Shirehampton Road. These can be easily accessed from the station, just opposite the Co-op store. Bus services and potential rail replacements can make your travel convenient, ensuring you connect seamlessly to your next destination.

For more detailed information about bus connections from Sea Mills, travelers can find a helpful printable guide here. Those interested in bicycle hire should note that there is no official cycle hire service available directly through the station.

Popular Routes from Sea Mills Station

Sea Mills Station serves as a gateway to several popular destinations. Whether you're visiting historic Bath Spa, conducting business at London Paddington, or spending leisure time in nearby Clifton Down, scheduling your travel from Sea Mills is straightforward. For those planning a trip to the city center, a short journey to Bristol Temple Meads provides ample connectivity to the rest of the UK. Additionally, the station grants access to serene destinations like Severn Beach and day trips to Cardiff Central.

Planning your trip is easy when you have such a range of fascinating places accessible directly by train from Sea Mills. Whether you're on a business trip, a leisurely getaway, or just catching a quick commute, discover all that the region has to offer.

The Final Stop

Sea Mills Station might be modest, but it's packed with potential for exploration and travel across the UK. While it is essential to accommodate ticket purchasing and amenities ahead of time, the station's connectivity makes it a worthy stop on your travel map. Don't forget to soak in a bit of its charm while you await your train—it's a brief yet captivating encounter with English railway history and a gateway to many adventures.

For all your rail-related needs, whether planning, booking tickets, or ensuring one's comfort during travel, turning to Sea Mills is just the first step in an incredible journey.

Looking for more inspiration?

Popular places to travel by train from Cardiff Bay