Of course it depends on the airplane and the seating configuration. But the largest commercial airliner in the world, the Airbus 380, can seat up to 853 people.
450 seats
Aircraft have seats from 1 to 853
There are a total of 117 seats on the Boeing 717
there are 300 not including the crew seats. (submitted by Joseph Green)
It depends on the type and configuration of the aircraft.
They are generally just called "seats".
depends on the airplane and the carrier and the distance
About 50, depending on the airline and the exact model of aircraft.
carrots
Seating on a Boeing 727 ranged from 131 seats for the 100-series to 145 seats (two-class configuration) or 189 seats (single class) for the 200-series.
It varies from a very lower number to hundreds depending on the manufacturer and model of the airplane.
The bulkhead row is the rearmost row of seats in the airplane. It is thought by some to be statistically safer in case of a crash than other seats.