Snow and other forms of bad weather in Europe have posed travel disruptions for a fourth day, with Etihad Airways saying that heavy snowfall has forced its Dubai-Frankfurt flight to land in Munich, from where passengers were transported to original destination by train. Meanwhile, the carrier operated two relief flights to Heathrow and Manchester to pick up the backlog. "Now we are running on schedule. No extra flights were added for today as the airline's passenger backlog has been cleared," an Etihad spokesperson said. Emirates said in a statement that all of its UK flights are operating "as close to schedule as possible" and so are those from the rest of Europe.