Most of Europe’s major airports remain closed for a fifth consecutive day due to a volcanic eruption emitting a cloud of ash from Iceland. Thousands of flights have been canceled since last week, stranding passengers making their way to and from Europe. Major airlines are pressuring European officials to drop the flight restrictions as the ash clears. But aviation officials in countries including Britain, France, Germany and the Netherlands say their airspace will remain closed at least through today. President Obama was among those whose travels plans were disrupted by the volcanic ash. The White House canceled Obama’s scheduled trip to Poland on Sunday for the funeral of Polish president Lech Kaczynski.