April 28, 2026, 8:12 am | Read time: 3 minutes
The departure has been delayed. But that doesn’t necessarily mean you have to change your plans at your destination. Planes often make up for delays in surprising ways–sometimes even arriving earlier than scheduled! TRAVELBOOK explains how this is possible.
Why Do Planes Arrive Earlier Despite Delayed Departures?
Today, there is significantly more air traffic than in the past, leading to more frequent delays on the ground–such as during check-in or waiting for takeoff clearance. This can extend the overall travel time. However, the actual flight time is not always fixed and can vary slightly depending on the route, weather conditions, and air traffic.
Once a plane is in the air, many factors change. Some of these explain why planes often land on time–or even earlier than planned–despite a delayed start.
Airlines Plan Travel Time More Generously Than Before
TRAVELBOOK spoke with aviation expert Heinrich Großbongardt about this topic. He points to the “more cautious planning by airlines”–a logical response to the increasing susceptibility to delays in growing air traffic.
According to Großbongardt, airlines calculate the planned travel duration, or the so-called “block time” between departure and arrival, somewhat more generously than necessary. This ensures they are prepared for the not unlikely event of a longer travel time–and can even report an earlier arrival than expected in favorable circumstances.
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Why Pilots Don’t Simply Fly Faster
One might wonder why pilots don’t strive to arrive even earlier–achieving a record-breaking short flight time with an on-time departure. A possible answer was given by a British pilot on the user platform Reddit. According to him, pilots try to fly a bit slower when possible, such as during a smooth overall process, to save fuel.
Aviation expert Cord Schellenberg also confirmed in a conversation with TRAVELBOOK: For economic and ecological reasons, passenger planes are operated as efficiently as possible today–and not constantly flown at maximum speed.
Moreover, increases in speed are physically and operationally limited. A significantly higher speed would disproportionately increase fuel consumption and is therefore rarely economical.
Factors That Favor Making Up Lost Flight Time
Various factors can help make up lost flight time, such as strong tailwinds, which can significantly shorten flight time. Additionally, air traffic controllers can allow more direct routes or shortcuts when the airspace is clear. An optimized altitude also plays a role, as favorable wind conditions often prevail there. Furthermore, faster procedures after landing, such as shorter taxi times or an open runway, can contribute to the plane arriving earlier.