(NECN: Jennifer Eagan, Boston, Mass.) - International flights are finally taking off from Logan Airport in Boston, Massachusetts.
It could be days, even weeks, before this backlog of flights is cleared around the world.
Air travel is slowly returning to normal in Europe -- nearly a week after a massive volcano in Iceland sent a huge cloud of ash into the atmosphere.
As the haze lifts, there is possible relief for the hundreds of thousands of passengers stranded around the world.
Airlines have lost $1.7 billion. They are asking governments to look at compensation.