I wouldn't assume this is how it works. But it could know your time zone changes and assume departure/arrival times based on it not being able to ping a server,

I wouldn't assume this is how it works. But it could know your time zone changes and assume departure/arrival times based on it not being able to ping a server, then link this between possible airports based on time zones then possible flights based on the times. But I suspect the false positives on this would be huge and if you felt so compelled could easily test while at your desk.