I flew from Amsterdam to Toronto a few weeks ago. Multiple people on my flight were confirmed to have had it. Including the person next to me.

But during my 14 day quarantine, I didn't notice any symptoms apart from a mildly sore throat for a couple of days.

You're right. Longer flights certainly give the virus more opportunities to spread. Especually with people getting up to use the washroom etc more often they would on a very short one.

Good article.