[nradov]

Intent matters. In US legal jurisdictions that could potentially be prosecuted as a CFAA violation, although I'm not aware of any cases like that yet.

https://www.justice.gov/jm/jm-9-48000-computer-fraud

[DaSHacka]

The U.S. has one of the most overbearing laws in that regard, though. The OP happened on a flight leaving Canada.