Here at London Stansted, with a major modern terminal fully equipped with jetways (one of my colleagues here in the office refers to them as "the tube thing"!) Ryanair and Easyjet do not use them. I was once told BAA, the airport owners, charge £80 per aircraft to use them, but it also suits the rapid turnarounds of the low-costs with steps in use front and rear of the aircraft.

So from aircraft level in the terminal you all have to go down the emergency steps at each gate, out onto the ramp, and back up the aircraft steps, while the jetway lays unused.