South Corridor: Routes 1, 2, 11 & 12 - Douglas to Port Erin
The south corridor is the backbone of the Isle of Man bus network. Nine route variants - 1, 1a, 1h, 2, 2a, 11, 11a, 12, and 12a - all share the same core corridor linking Douglas with Ronaldsway Airport, Castletown, and the southern seaside towns of Port Erin and Port St Mary. Whether you are catching a flight, heading to the beach at Port Erin, or visiting Castle Rushen, one of these services will get you there.
Understanding the Route Variants
All nine services follow the same Douglas-Airport-Castletown-Port Erin corridor, but they differ in their starting points and the route taken between Castletown and Port Erin:
- Route 1 - Nobles Hospital to Port St Mary via Hailwood Avenue, Douglas, Airport, Castletown, and Colby (19 trips).
- Route 1a - Same as Route 1 but via Shore Road instead of Colby (6 trips).
- Route 1h - Royal Avenue to Port Erin via Douglas, Airport, Castletown, and Colby (4 trips southbound).
- Route 2 / 2a - Start from Ballachrink instead of Nobles Hospital. Route 2 goes via Colby (9 trips), 2a via Shore Road (10 trips).
- Route 11 / 11a - Northbound services from Port Erin to Douglas and Willaston. Route 11 via Colby (15 trips), 11a via Shore Road (11 trips).
- Route 12 / 12a - Start from Willaston via Hailwood Avenue and Birch Hill. Route 12 via Colby (22 trips), 12a via Shore Road (14 trips).
The key difference to remember: routes ending without "a" go via Colby; routes with "a" go via Shore Road.
The Corridor
Southbound services depart from northern Douglas (Nobles Hospital, Ballachrink, or Willaston depending on the variant) and head through Cronkbourne, Hailwood Avenue, and Onchan before reaching Douglas Promenade and Lord Street. From Lord Street, the bus heads south through Pulrose, Anagh Coar, and Richmond Hill, then on through Mount Murray, Santon, and the Fairy Bridge to Ballasalla and Ronaldsway Airport -- the island's only commercial airport. From the airport, it is a short ride into Castletown, which served as the island's capital until 1869. The imposing limestone fortress of Castle Rushen dominates the harbour here and is one of the best-preserved medieval castles in Europe.
Beyond Castletown, Routes 1/2/11/12 continue through Ballabeg and Colby before arriving in Port Erin, while the "a" variants take the Shore Road through Port St Mary instead. Many services continue the short distance to Port St Mary, giving access to the fishing harbour and the start of coastal walking trails toward the Calf of Man. The full journey from Douglas Lord Street to Port Erin takes approximately 60 minutes, making this corridor one of the most frequent and reliable on the island with combined services running throughout the day on weekdays and Saturdays.
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Download Kivoon — free on iOS & AndroidAirport Transfers
The south corridor provides the main public transport link to Ronaldsway Airport (IOM). The bus stop is a short walk from the terminal building, and multiple route variants serve the airport throughout the day, including Routes 1, 1a, 1h, 2, 2a, 12, and 12a. The adult single fare from the airport to Douglas is £2.80 (child £1.40), or £2.25 with a Go Places 12 pre-paid card. You can pay with cash, contactless, or Go Places card on board. If you are on an early morning or late evening flight, check the timetable carefully as service frequency varies outside peak hours. Use the Kivoon app for live departure times from the airport stop.
Things to See
The south corridor is packed with attractions. Castle Rushen in Castletown is a must-visit - the fortress dates back to the Norse period and offers panoramic views from its battlements. Nearby, the Nautical Museum on Bridge Street tells the story of the island's seafaring heritage through a full-sized 18th-century armed yacht, the Peggy, housed in its original boathouse.
Port Erin's beach is one of the finest on the island: a sheltered crescent of sand backed by Bradda Head, topped with the distinctive Milner's Tower. From Port St Mary, walkers can follow the Raad ny Foillan coastal path south to the Sound, where you can look across to the Calf of Man - a small island nature reserve that is home to seals, puffins, and Manx shearwaters during the breeding season.
Fares and Practical Tips
Adult single fares from Douglas: £3.30 to Port Erin or Port St Mary, £2.80 to the Airport or Castletown. Child fares (ages 5-15) are £1.70 and £1.40 respectively. Children under 5 travel free. Discounted fares are available with Go Places pre-paid journey cards (Go Places 12 or Go Places 6) - for example, Douglas to Port Erin is £2.75 with a Go Places 12 card.
Between all the route variants, the south corridor has over 100 trips per day across both directions. Check the Kivoon app for current timetables and real-time departure information, as service patterns vary by day of the week.
Frequently Asked Questions
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