transatlantic flight plans.

Hi
i was on an Emirates flight recently from YYZ and while normally the flight takes northernly route close to Greenland, this flight took a direct route across the atlantic and made landfall into Portugal and then from there to DXB.

Then again i was on Etihad flight more recently and tha took a similar plan as well.

Is this now a routine and is there any advantages to this direct flight plan over the usual northern routes?
Thanks

AE

The top reason to for varying routes is the winds aloft. If you can pick up a good tailwind, it can make sense to take a longer route.