If you travel often by plane you may have noticed something. Many times although a flight is delayed, it finally arrives at its destination at the time it was scheduled. But how can we explain that?
To understand this, we need to think about this: In the 1960s, a flight between Los Angeles and New York took about 5 hours. Similarly, the flight from New York to Washington was just 45 minutes away. And yet today, this time of flight has increased instead of being reduced. More specifically from New York to Los Angeles the flight is now 6 hours while from New York to Washington 75 minutes. Of course, airports haven't changed their position. What has changed is airline tactics.
The reason? The constant delays. Due to the constant delays of the aforementioned flights as well as other flights, the airlines had to change their tactics. Thus, they have included and incorporated delays into their flight schedules. Instead of improving the schedule and duration of a flight, they have incorporated delays in it.
This explains the fact that although a flight is delayed, it eventually arrives at its destination just in time. They basically make the flight in real-time and at normal speed. This is even surprising to passengers. Because while they may have departed an hour later than normal, they arrive on time.
However, this trend in airlines around the world is causing problems. Not only does the flight last longer, but also in this way the illusion of accuracy is created. So there is no pressure on airlines to become more efficient.
In addition, many argue that longer flights also burden the environment as fuel and noise emissions increase significantly.