The head of Canterbury Tourism is urging people to keep their travel plans to the region after Monday's earthquake.

Christchurch and Canterbury Tourism chief executive Vic Allen was reassuring visitors the disruption is confined to Kaikoura. All other areas were operating as usual.

"The South Island remains a safe place to visit.

"Hanmer Springs is open, as is the Waipara Valley wine region, the TranzAlpine is running as normal from Christchurch to Greymouth via Arthur's Pass and a daily Intercity coach service between Christchurch and Picton is operating via the Lewis Pass."

Christchurch has been unaffected and is now regarded as one of the safest cities in the world, following a five-year infrastructure rebuild and strengthening upgrades, Allen said.

"Further aftershocks can be expected, but we are well-prepared for earthquakes and set up to assist visitors."