Canadian travellers heading to the United States could face significant delays and cancellations after the Federal Aviation Administration (FAA) ordered a nationwide ground stop Friday afternoon, Nov. 13, following widespread air traffic control communication problems. The extraordinary measure has halted departing flights across the United States, with potential disruptions extending to Canadian airports, airlines and passengers connecting through American cities. While Canadian airports are not subject to the U.S. ground stop, flights travelling between the two countries could be affected as American air traffic restrictions disrupt schedules and aircraft movements. googletag.cmd.push(function() { if($(document).width()