Europe

Heathrow Airport cancels flights amid snow forecasts in UK

  • A postman struggles in the snow while making deliveries in Stirling, Scotland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Andrew Milligan/PA via AP)

    A postman struggles in the snow while making deliveries in Stirling, Scotland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Andrew Milligan/PA via AP)  (The Associated Press)

  • Sheep are seen in a snow covered field, in County Antrim, Northern Ireland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Niall Carson/PA via AP)

    Sheep are seen in a snow covered field, in County Antrim, Northern Ireland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Niall Carson/PA via AP)  (The Associated Press)

  • A snow covered house is seen in County Antrim, Northern Ireland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Niall Carson/PA via AP)

    A snow covered house is seen in County Antrim, Northern Ireland, Thursday, Jan. 12, 2017. Snow showers and strong winds are expected across Scotland, Northern Ireland, Wales and the north of England on Thursday. (Niall Carson/PA via AP)  (The Associated Press)

London's Heathrow Airport says dozens of flights have been cancelled amid forecasts of snow and strong winds in Britain.

Heathrow, Europe's busiest airport, said 80 out of about 1,350 flights scheduled Thursday have been cancelled pre-emptively because of the wintry weather.

Britain's weather forecasters have issued warnings for snow for much of the country up until Saturday, with frequent snow showers and gales expected across Scotland, Northern Ireland and northern England. Sleet or snow may affect southern England as well.

Schools in parts of the country have closed and some students have been sent home.

Forecasters say the weather is caused by a polar air mass that originated over northern Canada.