The average bus between Portsmouth and Mersea Island takes 9h 59m and the fastest bus takes 5h 42m. The bus service runs several times per day from Portsmouth to Mersea Island. 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 Mersea Island. The earliest departure is at 3:20 AM at night, and the last departure from Portsmouth is at 8:10 PM which arrives into Mersea Island at 8:06 AM. All services require a transfer at Heathrow Central Bus Station and take an average of 9h 59m. The schedules shown below are for the next available departures.




7h 57m • 4 changes



8h 12m • 4 changes



8h 47m • 4 changes



7h 27m • 4 changes



9h 10m • 4 changes



8h 25m • 4 changes



10h • 4 changes



9h 40m • 4 changes



5h 42m • 4 changes



8h 30m • 4 changes



7h 56m • 4 changesArrives next day




14h 29m • 4 changes



5h 42m • 4 changes



9h 26m • 4 changesArrives next day




15h 4m • 4 changesArrives next day




11h 56m • 4 changes



5h 42m • 4 changes



9h 26m • 4 changesArrives next day




15h 4m • 4 changesArrives next day




11h 56m • 4 changesWant to know about travelling from Portsmouth to Mersea Island? 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 Mersea Island. However, there are services departing from Portsmouth station and arriving at Mersea Island station via Heathrow Central Bus Station station. The journey, including transfers, takes approximately 9h 59m.
Portsmouth to Mersea Island bus services, operated by National Express, depart from The Hard Interchange station.
Portsmouth to Mersea Island bus services, operated by National Express, arrive at Railway Station.
The distance between Portsmouth and Mersea Island is 179.2 km. The road distance is 265 km.
You can take a bus from The Hard Interchange to High Street via Heathrow Central Bus Station, Coach Station, Railway Station, High Street, and Angel Court in around 6h 33m.