Quote:
Originally Posted by Dominion301
If you only count a connecting passenger once, if they're going from one segment to another (i.e., domestic, transborder or international), how would you count them?
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According to ICAO, twice. See below.
Quote:
Originally Posted by Dominion301
The interesting thing with all of this is there's no global standard that I'm aware of from IATA, ICAO or ACI.
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ICAO definitely covers the subject in its glossary of terms used in civil aviation statistics. Now whether airports abide by those definitions, I don't know, but I would think they do. It's far easier to count connecting passengers twice rather than once.
https://www.icao.int/dataplus_archive/Documents/20130807/GLOSSARY%20v1%202.pdf
Quote:
Passengers carried. The number of passengers carried is obtained by counting each passenger on a particular flight (with one flight number) once only and not repeatedly on each individual stage of that flight, with a single exception that a passenger flying on both the international and domestic stages of the same flight should be counted as both a domestic and an international passenger.
Direct transit traffic. Traffic which both arrives and departs the point (transits the point) as
part of a continuous movement under a single air ticket or waybill, without a stopover, on the
same or different aircraft identified by the same airline designator and flight number. Direct
transit traffic is counted only once.
Passengers, embarked/disembarked.
Embarked passengers. Number of air carrier revenue and non-revenue passengers
whose air journey begins at the reporting airport, including the number of
disembarked passengers, other than direct transit passengers, who are continuing their
air journey.
Disembarked passengers. Number of air carrier revenue and non-revenue passengers
whose air journey terminates at the reporting airport, including the number of
passengers, other than direct transit passengers, who will continue their air journey.
Transfer traffic. Traffic connecting between aircraft identified by different airline designators
and flight numbers. Transfer traffic is counted twice: once upon arrival and once on
departure.
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So basically, according to ICAO, a connecting passenger is always counted twice, with one exception.
A domestic direct transit flight.
Ex. A passenger that flies AC YYZ-YUL-YQB all with the same flight number, should be counted once at YUL. However, if someone flies AC YYZ-YUL-MXP on the same flight number, he counts twice at YUL, since there is a domestic and international leg involved.
So technically, it's not YEG's passenger numbers that are inflated. It's airports, such as YYC, who have a very high connection percentage, that have inflated numbers, as the actual number of people in the building throughout the year is lower than the passenger count (since almost all connections are double counted).
As an example, if we assume YYC has a 60% connection percentage, that means out of the ~18.5 million passengers in 2023, 11.1 million are connecting. If they are all double counted, it means only 5.55 million connecting passengers actually transited the airport. So the number of passengers that actually used the airport is closer to 12.9 million (5.55 million + (18.5- 11.1million)).
Helps partly explain why a city with a quarter of the population of Montreal has almost the same passenger number.
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