"The aircraft was quarantined on arrival," said Donald Morrison, a spokesman for the British Airports Authority (BAA) in Scotland, adding that a team of four doctors was organized to check the passengers over.
"They were diagnosed with the novovirus, more commonly known as winter vomiting bug," he added.
The passengers had all stayed at the same hotel in the Dominican Republic, one of the world's poorest countries. All affected passengers received treatment and none required hospital attention before being allowed home.
"The aircraft has since left the airport on another flight," Morrison added.
He did not say where the passengers had picked up the bug but the Evening Times newspaper in Glasgow said they had been staying at the same hotel on the Caribbean island where a number of people recently caught a similar illness.