What’s the maximum number of passengers this impressive aircraft can carry, and how do different classes compare in terms of comfort and amenities? This aircraft provides a variety of options for passengers of all ages, whether traveling in Economy, Premium Economy, or Business Class. The capacity of Air Canada’s Boeing 777-300ER varies by seat configuration. If you’ve ever wondered just how many passengers can fit into an Air Canada Boeing 7770-300ER, here’s where you can find The following article will go over the specifics of Air Canada’s Boeing 777-300ER, revealing the aircraft’s capacity for a maximum of 168 passengers. If you’ve ever wondered just how many passengers can fit into an Air Canada Boeing 7770-300ER, here’s where you can find out.