I don’t have any evidence for it but I suspect it might be necessary to satisfy APIS requirements. If you can provide a nickname, you could conceivably evade automatic checks against no-fly lists and similar databases.
Also, many people (e.g. from places like Indonesia) go by names that are completely different from what’s on their passport. As @pnuts remarked in a comment, making sure hundreds of airlines and thousands of gate handling personnel all over the world share the same understanding of what’s a nickname and what’s not seems extremely difficult so it makes sense to enact a rigid rule that does not leave any discretion to airline reps.
So this is really about security (or “security theater”).
Credit:stackoverflow.com‘
4 Mar, 2024
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5 Mar, 2024