Same issue; I think the blue circle is a clock, actually, but... as for how to escape? Haven't a clue.
EDIT: Press control on the left side of the screen and there's dialogue; think this is the way out.
I've always loved just... being in airports, but every airport-related game tends to take place somewhere focusing on the actual, well, airplanes. A game that takes place inside and captures the feeling of rushing to catch a flight has been something I've been looking for for a while. Would be happy with the bundle if this was the only game I played.