Kiwi kids have spread a little Christmas cheer to those stranded at Heathrow Airport in London.

Choralation, the combined choir of Westlake Girls' and Boys' High Schools in Auckland have been touring Europe for three weeks.

Brian Wilson's daughter is on the trip, and he told Newstalk ZB the students had to wait outside the terminal at Heathrow for three hours, in sub-zero temperatures, so "they thought they would sing Christmas carols to cheer up all the angry and frustrated travellers that were out there".

The reaction was said to be positive, drawing the attention of media covering the Heathrow delays.

The students made it onto a flight and were due to arrive in New Zealand via Hong Kong this afternoon.