Does anyone have experience flying this or a similar route with a large dog who only fits in a kennel that is sized as an XL (500 size with height extension) or Giant (700)? Any tips?

It seems my options for my border collie/german shepherd mix are:
- Royal Air Maroc: Direct flight from JFK or YUL to CMN, but I have to drive him to JFK or YUL for about 4.5 hours, and will have to rent a car to do this.
- Lufthansa: I can fly them but there's about an 11 hour layover in Frankfurt.
- Air France: has a layover for 3 or 4 hours in Paris.

I have researched the company websites, but welcome any experience-based advice. The websites don't necessarily tell the whole story.

My dog is also able to fly in the States as an emotional support animal, but because it is so complicated, I think I do not want to do this for an international flight.

I believe that I am aware of the veterinary clearances required.
https://www.aphis.usda.gov/aphis/pet...travel-morocco