None of the overseas territories are part of Schengen. They rerouted there because another airline (French Bee / Air Caraïbes) doing CDG -> PPT has a base there.

They’re doing it trough Vancouver now that they know the Canadian government won’t cancel their flights at the last minute ;-)

Isn't French Guiana France proper? I always see it marked alongside the Schengen zones.

Yes, French Guiana is as much part of France as Hawaii is part of the USA. They use the Euro, and any EU citizen can move there for work, study or just to live (if they have the money to support themselves).

However, it's not part of Schengen. The usual benefit -- no queues at the borders -- is pretty limited, when it doesn't border any other EU state, and anyone from the EU must arrive by air or sea anyway.

Since it is part of the EU, crossing the border is less-strict for an EU citizen: an identity card is acceptable, and there's less ability for people to be detained by border guards.

> The usual benefit -- no queues at the borders -- is pretty limited, when it doesn't border any other EU state, and anyone from the EU must arrive by air or sea anyway.

Well, that's never stopped Metropolitan France from creating queues at air-mode borders anyway.

Source: Flew from Brussels&Frankfurt and still got border controlled at Toulouse multiple times. Some bullshit about it being "temporary for 1 year" with endless renewals and no