The average bus between Kilmarnock and Portsmouth takes 15h 37m and the fastest bus takes 13h 32m. The bus service runs several times per day from Kilmarnock to Portsmouth. 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 3 times a day between Kilmarnock and Portsmouth. The earliest departure is at 12:13 AM at night, and the last departure from Kilmarnock is at 9:13 PM which arrives into Portsmouth at 10:45 AM. All services require a transfer at Buchanan Bus Station and take an average of 15h 37m. The schedules shown below are for the next available departures.


15h 9m • 2 changes
Arrives next day


16h 27m • 2 changes
Arrives next day


13h 42m • 2 changes


15h 9m • 2 changes
Arrives next day


16h 27m • 2 changes
Arrives next day


13h 42m • 2 changes


15h 9m • 2 changes
Arrives next day


16h 27m • 2 changes
Arrives next day


13h 42m • 2 changes


15h 39m • 2 changes
Arrives next day


16h 27m • 2 changes
Arrives next day


13h 32m • 2 changes
Want to know about travelling from Kilmarnock to Portsmouth? 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 Kilmarnock to Portsmouth. However, there are services departing from Kilmarnock station and arriving at Portsmouth station via London Victoria Coach Station Arrivals station. The journey, including transfers, takes approximately 15h 37m.
Kilmarnock to Portsmouth bus services, operated by Stagecoach West Scotland, depart from Buchanan Bus Station.
Kilmarnock to Portsmouth bus services, operated by Stagecoach West Scotland, arrive at University of Portsmouth station.
The distance between Kilmarnock and Portsmouth is 581 km. The road distance is 827 km.
You can take a bus from Church Street to University of Portsmouth via Buchanan Bus Station, London Victoria Coach Station Arrivals, and London Victoria in around 13h 46m.