By plane
Kuala Terengganu's Sultan Mahmud Airport TGG has around half a dozen flights per day to Kuala Lumpur 1 hour on Malaysia Airlines (http://www.malaysiaairlin...) and AirAsia (http://www.airasia.com). Fares to Kuala Terengganu varies with Malaysia Airlines, offering as low as RM136 full service and AirAsia with as low as RM60. Firefly (http://www.fireflyz.com.my/) links Kuala Terengganu directly with Subang Airport in Kuala Lumpur.
By bus
The long distance bus station has buses to all main Malaysian cities outside Terengganu : Kuala Lumpur 7 hours, Penang 7-8 hours, Johor Bahru 9 hours, Kota Bharu 3 hours, Malacca, Kuantan.
Transnasional (http://www.transnasional....) also runs buses direct to Singapore 10 hours, S$36/15.10 to/from Singapore.
The local bus station has buses to most places in town and in Terengganu : Merang for Redang, Kuala Besut for the Perhentians, Dungun, etc.
By ship
In season March-October, there are two ferries a day from the central Shahbandar Jetty direct to Redang Island 75 min. These are operated by and intended primarily for guests of the Berjaya Redang Resort, but they'll take non-guests on board for a price if there's space.
Most travellers to Redang, however, will go via the main jetty at Merang, 45 min north of town.