Video: Kristen Stewart falls at airport with Robert Pattinson

Kristen Stewart and rumoured boyfriend Robert Pattinson were spotted at the airport, and poor Kristen took a tumble.

The couple, who were spotted kissing in Montreal where Kristen was filming On The Road, were heading inside Trudeau Airport on Tuesday, for a departing flight.

It is not yet known where the couple were going, but it looked like they were going together.

There was no sign of Rob’s best mate and Kristen’s co-star Tom Sturridge, who has been playing third wheel all week – illustrated beautifully as he stood next to the happy (alleged) couple as they kissed.

Check out the video of the Twilight co-stars arriving at the airport below.