In January, I will be participating in a 36 hour competition to get as far away from home (Cambridge University in England) as possible. The only catch is, we can't spend any of our own money... I've heard that it's been done in some cases before, but I was curious what you all thought of being able to get free flights to somewhere as far away as possible, and what airlines/airports would make this most likely to happen? As you can imagine, the airports we'd be looking to fly out of are the London ones - Heathrow, Stansted, Luton...

Any help would be much appreciated!