A flight from Canada to Mexico carrying about 150 passengers has made an emergency medical landing in western Montana after encountering extreme turbulence that injured a flight attendant.
Sunwing Airlines spokeswoman Janine Chapman says the Boeing 737 landed at Helena Regional Airport in Montana, USA.
She says a medical team cleared the male flight attendant, and there are no other reported injuries.
But Chapman says another aircraft is being sent from the company's headquarters in Toronto to pick up the passengers so the initial plane can be examined for damage.
She says the passengers who boarded Flight 559 in Edmonton, Alberta in Canada, are mostly families heading to Puerto Vallarta, Mexico, for a holiday.