The cheapest and fastest buses from Southampton to Cardiff
Cheapest price
$20
Average price
$25
Fastest journey
6 h 35 m
Average duration
7 h 9 m
Buses per day
5
Distance
139 km
The best way to find a cheap bus ticket from Southampton to Cardiff is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from Southampton to Cardiff will cost around $25 if you buy it on the day, but the cheapest tickets can be found for only $20.
Of the 5 buses that leave Southampton for Cardiff on Thu, Nov 06, 5 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.
On Thu, Nov 06 the direct buses cover the 139 km distance in an average of 7 h 9 m but if you time it right, some buses will get you there in just 6 h 35 m .
On Thu, Nov 06 the slowest buses will take 7 h 35 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.










Travel Information
Compare train and bus for Southampton to Cardiff
Omio recommends booking the train as it is the most popular option from Southampton to Cardiff among Omio's users. If you are prioritising price take the bus with prices starting from €16. For those with little time consider booking a train which can get you there in 2h 41m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.0 - 0.1kg. The ticket price range depends on the travel mode: a bus costs an average of €16, and a train costs an average of €26.
Distance: 86 miles (139 km)
Compare bus with
| Bus | Most popular Train |
|---|---|
€29 Average price Cheapest | €50 Average price |
6h 50m Average total duration 6h 20m Onboard + 30m Additional time* | 3h 11m Average total duration Fastest 2h 41m Onboard + 30m Additional time* |
0.1 - 0.3kg CO2 emissions | 0.0 - 0.1kg CO2 emissions Lowest |
![]() Most popular bus company | ![]() Most popular train company |
Direct Options | Direct Options |
Additional time: Average total travel duration to departure point, security checks and transfers.
Live departures
Southampton to Cardiff bus times
The table below shows live departures for Southampton to Cardiff buses for today, Wednesday, November 5. You can also manually refresh the results below to see updated bus journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
![]() | 8:15 AM Southampton | 7h20 | 3:35 PM Cardiff | 0 transfersDirect | |
![]() | 9:50 AM Southampton | 7h45 | 5:35 PM Cardiff | 0 transfersDirect | |
![]() | 11:05 AM Southampton | 7h35 | 6:40 PM Cardiff | 0 transfersDirect | |
![]() | 4:00 PM Southampton | 7h20 | 11:20 PM Cardiff | 0 transfersDirect | |
![]() | 7:30 PM Southampton | 6h45 | 2:15 AM Cardiff | 0 transfersDirect |
Find all the dates and times for this journey
Compare prices and tickets Southampton to Cardiff by train or bus
Compare train and bus prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
Nov 06
Nov 07
Nov 08
Nov 09
Nov 10
Nov 11
Nov 12
Journey information
Overview: Bus from Southampton to Cardiff
Distance 86 miles (139 km) |
Average bus duration 6h 20m |
Cheapest ticket price $20 (€16) |
Buses per day 15 |
Fastest bus 5h 10m |
First bus 02:30 |
Last bus 23:40 |
Bus providers: National Express from Southampton to CardiffYou can travel by bus between Southampton to Cardiff with National Express for as low as $20 (€16). When you search for schedules and tickets, Omio will show you the best journey
National Express
FAQs: Bus from Southampton to Cardiff

- National Express
- Assistance
- Priority seating
- Accessible toilets.
- Cardiff Castle, a historic fortress with Roman and Norman roots offering guided tours and events
- St Fagans National Museum of History, an open-air museum showcasing Welsh life and culture through reconstructed buildings and exhibits
- Cardiff Bay, a vibrant waterfront area with dining, entertainment, and cultural attractions
- National Museum Cardiff, featuring art, archaeology, and natural history collections
- Bute Park, a large green space perfect for leisurely walks and picnics.
- Millennium Centre, a renowned arts venue hosting opera, ballet, and theater performances
- Explore the vibrant nightlife in Cardiff's city center with its array of pubs and clubs
- Take a boat tour around Cardiff Bay for scenic views and historical insights
- Visit the Cardiff International White Water for an adventurous day of rafting and kayaking
- Enjoy shopping and dining at the bustling Cardiff Market, offering local produce and unique finds.
- National Express
- You can cancel your ticket up to 24 hours before departure for a refund minus a cancellation fee. Changes can be up to 24 hours before departure for a fee.
To find the cheapest bus tickets for your trip from Southampton to Cardiff, follow these tips:
Start your search now and compare ticket prices to find the best deal!
- National Express
- Two medium-sized suitcases up to 20kg each and one small piece of hand luggage.
- National Express
- 10€ per additional bag.
popular bus stations
Popular bus stations from Southampton to Cardiff
- 06:00-22:00
- Free Wi-Fi
- Café Express (in the station)
- Sandwich Bar (in the station).
- Available outside the station.
- Elevators, ramps
- Available near the entrance.
- Bus: U1, U2, U6, X4 Train: South Western Railway
Most popular bus connections from Southampton
More options for your journey from Southampton to Cardiff
Here are some other resources that might have the information you need

