Asked in Parachutes
Why are there flotation devices under airline seats instead of parachutes?
Most commercial airliners would be so hard to exit with a parachute safely that there is little benefit in providing them. The most likely situation from which escape is feasible is if the plane lands in water. After a water landing (since it is somewhat cushioned) there is a higher potential for survivors that, without life vests, might drown before they could be rescued.