A Fox Glacier helicopter operator took matters into his own hands after a pair from Hong Kong went for a scenic flight when they were supposed to be in isolation.

Rob Jewel's heli-flight flight full of tourists over Fox Glacier was compromised by tourists refusing to self isolate.

He told Newshub the guide from Fox Glacier Guiding asked how long the pair had been in New Zealand. When they said they had arrived Monday, alarm bells rang in Jewel's head.

The couple from Hong Kong were immediately flown off the glacier and met by authorities for an explanation.

"They'd been told at immigration at their arrival into New Zealand about the self-isolation rules, Maui Campervan who had rented the campervan had also told them," said Jewel.

"It was in their documentation with this couple and yet they still ended up in Fox Glacier doing a heli-fight when they should've been self-isolating,"