The EU has heavily criticised European airports for failing to deal with recent freezing weather, which has left thousands of travellers stranded, BBC said. European transport commissioner Siim Kallas urged airports to “get serious” about planning, and labelled them a “weak link” in the infrastructure. Hundreds of flights have been cancelled in recent days, as snow and ice have disrupted travel across Europe. London’s Heathrow has been operating at less than half of its normal capacity. Weary passengers struggling to reach Christmas holiday destinations were yesterday spending a fourth day at airports, where patience with a shortage of both information and basic supplies has been wearing thin.