Last Friday Keir flew to Moscow with about 50 other students and teachers as part of his A level History course.
Since then Heathrow airport has closed and they are due to arrive back there from St Petersburg late on Wednesday afternoon.
At the moment we're not sure if he'll be home for Christmas or what, if any, contingency plans have been put in place by his school or the organisers.
British Airways' website is experiences very heavy traffic and I cannot get onto the arrivals/departures page.
I'm sure they're all enjoying themselves though. In Moscow recently it's been warmer that it is here ...