VOLCANO?!?!??! NEED HELP DESPERATE?!?

right, I am from the UK and I am stuck in New York because of the Volcano eruption in Iceland. I really need to get home because of my work but luckily, as I'm staying with family, I have food and a place to sleep. I have a flight definately booked flying into Heathrow for thursday - do you think the airspace will be open?! I need to know when you think they will re-open Heathrow and when the ash cloud will go - ANY INFORMATION ON THIS WILL BE SO USEFUL!