This all depends on how much money you're willing to spend. First Class seats are very comfortable, Economy seats have nothing special, they're a little more comfortable than for instance bus seats though.
450 seats
They are generally just called "seats".
Aircraft have seats from 1 to 853
how do you remove the back seats from a 2005 vw confortable vw beetle
depends on the airplane and the carrier and the distance
carrots
There are a total of 117 seats on the Boeing 717
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.
There is a miniature rocket under the seats and a parachute.
Boeing 777
there are 300 not including the crew seats. (submitted by Joseph Green)
An aluminium frame with fabric and foam rubber.