How do airlines determine flight times?

Answer: Airlines create flight times based on the previous history of the flight. As an example, every airline flying into New York on a Friday afternoon knows that there will be delays, so additional time is added to the schedule. This added time is not needed for an 11 p.m. arrival on a Sunday.



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The accuracy of the arrival time varies; it's generally better at a major airport (often within a minute) than out in the boonies (can be ~15 minutes off). You can check the altitude in the tracklog to get an idea of how reasonable the arrival time is.

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Are flights as long as they say? One pilot confessed to Reader's Digest that airlines exaggerate their times to make themselves look better. “No, it's not your imagination: Airlines really have adjusted their flight arrival times so they can have a better record of on-time arrivals,” the AirTran Airways captain said.

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In air travel, as delays are both common and potentially expensive, the scheduled flight time is usually increased to about 110% of the expected flight time, however some airlines are reportedly now padding by as much as 50%.

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The truth is, airlines will frequently overestimate the time it takes to get from A to B. This provides them with extra breathing space and ensures that flights do indeed arrive on time, generally speaking. This is what's called “schedule padding” and is a growing, global phenomenon.

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Some airlines utilize line bidding where a pilot selects a “line” – an entire month's worth of flying and days off while others utilize a preferential bidding system (PBS), such as NavBlue, where pilots elect certain preferences (weekends off, less morning flying, overnights in a certain city, etc.).

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“That may mean that you send a plane to a destination at a weird time, 3:03, rather than three o'clock or 3:05,” he said. That's because the airline is considering the number of workers on the ground, the possibility of unnecessary delays and the obligation to arrive on time, he explained.

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Airplanes primarily measure their speed through the air (airspeed), and the air tends to move with the ground, so the situation is the same. If the air is not moving the same as the ground, it's called wind, which is the primary influence on flight time.

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Specifically, plane tickets usually don't get cheaper closer to the departure date. Instead, flights tend to be the most inexpensive when you book between four months and three weeks before your departure date. According to CheapAir.com, you can expect rates to go up after that period.

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For example, if there's bad weather or air traffic congestion, the airline may need to adjust their schedule to avoid delays and cancellations. Additionally, changes in airport operating hours, security measures, or even changes in government regulations can all affect flight schedules.

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The simple answer is yes, pilots do, and are allowed to sleep during flight but there are strict rules controlling this practice.

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One pilot confessed to Reader's Digest that airlines exaggerate their times to make themselves look better. “No, it's not your imagination: Airlines really have adjusted their flight arrival times so they can have a better record of on-time arrivals,” the AirTran Airways captain said.

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The airlines update fare information 3 times a day. They do not necessarily change airfare prices all three times, but they certainly can, and often do.

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Plane crashes are most likely during the first three minutes and last eight minutes of the flight. Called the Plus Three Minus Eight rule, statistically, this is the most dangerous time, according to a Ben Sherwood, author of The Survivors Club — The Secrets and Science That Could Save Your Life”.

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After the airplane flew around the world, scientists compared the two clocks. The clock on the fast-moving airplane was slightly behind the clock on the ground. So, the clock on the airplane was traveling slightly slower in time than 1 second per second.

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