The average bus between Portsmouth and Kilmarnock takes 14h 50m and the fastest bus takes 12h 18m. The bus service runs several times per day from Portsmouth to Kilmarnock. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run 5 times a day between Portsmouth and Kilmarnock. The earliest departure is at 3:20 AM at night, and the last departure from Portsmouth is at 8:10 PM which arrives into Kilmarnock at 10:07 AM. All services require a transfer at London Victoria Coach Station Arrivals and take an average of 14h 50m. The schedules shown below are for the next available departures.


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Want to know about travelling from Portsmouth to Kilmarnock? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Portsmouth to Kilmarnock. However, there are services departing from Portsmouth station and arriving at Kilmarnock station via London Victoria Coach Station Arrivals station. The journey, including transfers, takes approximately 14h 50m.
Portsmouth to Kilmarnock bus services, operated by National Express, depart from The Hard Interchange station.
Portsmouth to Kilmarnock bus services, operated by National Express, arrive at Buchanan Bus Station.
Book your Portsmouth to Kilmarnock bus tickets online with National Express, Stagecoach West Scotland and FlixBus.
The distance between Portsmouth and Kilmarnock is 581 km. The road distance is 834 km.
You can take a bus from The Hard Interchange to Kilmarnock Bus Station via London Victoria Coach Station Arrivals, London Victoria, and Buchanan Bus Station in around 13h 19m.