Find coaches from Cardiff to Southampton

Previously seen journeys

Next departures from Cardiff to Southampton on 30 October
Operated byVehicle typeDeparture timeDeparture locationTrip durationArrival timeArrival locationRecommendedPrice and booking link
National Express
Cardiff (Gabalfa Interchange, o/s Clinic)
University of SouthamptonNo tags
National Express
Cardiff University (opp Cathays Rail Stn)
University of SouthamptonNo tags
National Express
Cardiff (Gabalfa Interchange, o/s Clinic)
University of SouthamptonNo tags
National Express
Cardiff University (opp Cathays Rail Stn)
University of SouthamptonNo tags
National Express
Cardiff (Gabalfa Interchange, o/s Clinic)
University of SouthamptonNo tags

Accepted payments

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Compare 3 ways to travel from Cardiff to Southampton

busbud logoWe recommend taking the train

Among the sustainable travel choices, the train stands out as a good way to reach Southampton. The journey takes about 2 hours 36 minutes and with fares starting at just US$35, it presents an excellent value for a comfortable ride.

5train per day
2h 36mAverage duration
139 kmDistance
3kgCO₂ emissions
Bus
Average priceUS$20 - US$66Average duration7h
3kg CO₂e
Train
Average priceUS$35 - US$296Average duration2h 36m
3kg CO₂e
Carpool
Average priceUS$15 - US$15Average duration2h 40m
6kg CO₂e

Bus Cardiff to Southampton: Trip Overview

Average ticket priceUS$34
Average bus trip duration7h
Number of daily buses12
Earliest bus departure03:20
Distance139 km
Latest bus departure19:58

Cardiff to Southampton Bus

Busbud helps you find a bus from Cardiff to Southampton. Get the best fare and schedule, book a round trip ticket or find buses with WiFi and electrical outlets.

We make sure you can find a bus service from Cardiff to Southampton from the most reliable bus companies operating this trip.

Discover how much the bus trip from Cardiff to Southampton will cost you. Use our filters and sorting features to find the cheapest bus tickets or luxury buses.

Frequently asked questions on the trip Cardiff - Southampton

  1. How much does a bus ticket from Cardiff to Southampton cost?

    The bus ticket price from Cardiff to Southampton starts at US$20. The best way to find cheap bus tickets from Cardiff to Southampton 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!

  2. How long is the bus ride from Cardiff to Southampton?

    The average travel time between Cardiff and Southampton is around 7h, although the fastest bus will take about 6h 20m. This is the time it takes to travel the 140 km that separates the two cities.

  3. How many daily bus connections are there between Cardiff and Southampton?

    The number of buses from Cardiff to Southampton can differ depending on the day of the week. On average, there are 12 on this route. Some buses run direct routes, while others have layovers. Simplify your bus trip from Cardiff to Southampton by comparing and selecting the bus that fits your travel style and budget on Busbud.

  4. Which bus companies travel from Cardiff to Southampton?

    When taking the bus from Cardiff to Southampton, you can travel comfortably and safely with National Express, FlixBus.

  5. What are the departure and arrival stations when taking the bus from Cardiff to Southampton?

    Buses travelling between Cardiff and Southampton leave from Cardiff University (o/s Cathays Rail Stn) or Sophia Gardens and arrive at Southampton Coach Station, Southampton Bus Stop, W. Esplanade Bus Station - Southampton.

Find cheapest prices for buses

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

Best price found
28/10
No data
29/10
No data
Today
No data
31/10
US$23
01/11
No data
02/11
No data
03/11
US$17
04/11
US$18
busbud logoThe cheapest trip from Cardiff to Southampton was searched and found on 03 Nov 2025 with a price of US$17

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

You can expect to pay from US$17 to US$31 for a bus ticket from Cardiff to Southampton based on the last 2 days. You can expect to find the cheapest price for the trip at US$17, which is on 2025-11-03.

About Bus Travel

Bus Travel Tips

Make friends with the driver. They usually know a lot about your destination and may even recommend which side of the bus to sit on to get the best views on the road between Cardiff and Southampton!

Start sightseeing the minute your bus leaves the station. If you're on the night bus from Cardiff to Southampton, get comfy and count the stars.

Buses have the smallest carbon footprint of all motorized transport modes. A bus going from Cardiff to Southampton will emit half the CO2 emitted by a train, and radically less than a car or an airplane.

Tune out to the fine sounds of your best music playlist on your bus trip from Cardiff to Southampton while indulging in miles on end of beautiful scenic views.

Did you know?

The bus driver with the longest career in the world drove more than 2,000,000 miles and is a happy World Record holder.

Did you know that 80% of the buses in North America are equipped with WiFi and power outlets ? And 60% of bus travellers have used their electronic device on board during 2014.

It takes 27 hours to go by bus from Lima to Cusco, one of the craziest bus trips on the world. This route is used daily by locals and backpackers.

Will you be returning to Cardiff by bus?

Bus from Southampton to Cardiff

You can also go to Southampton by train

Train from Cardiff to Southampton

Why choose Busbud?

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