I had a friend in Mexico and took PCR on Monday for Tuesday flight. Tuesday flight got cancelled. Couldn't get ahold of 2 major airlines on phone on Tuesday so

I had a friend in Mexico and took PCR on Monday for Tuesday flight. Tuesday flight got cancelled. Couldn't get ahold of 2 major airlines on phone on Tuesday so just showed up to airport on Wednesday to get any flight into Canada before 72 hour test expired. A bit of a mess.