Ryanair flies to Berlin. Even before the new airport, they were flying to Schoenefeld which was just outside the city limits. In fact, the old airport was just

Ryanair flies to Berlin. Even before the new airport, they were flying to Schoenefeld which was just outside the city limits. In fact, the old airport was just across the runaways of the new one and you can still reach the old terminal building with the commuter train. Schoenefeld was the old East Berlin airport, which was indeed suboptimal for the load of travellers it got over time.