The significance of the chapter's title "A View to a Death" alludes to the fact that Simon witnesses the dead paratrooper, and the boys end up brutally murdering Simon at the end of the chapter. At the beginning of the chapter, Simon climbs to the top of the mountain and discovers that the "beast" is actually a dead paratrooper. He then runs down the mountain to tell the other boys that the "beast" is actually a dead human. While Simon is running down the mountain, Jack and his hunters begin their ritual dance and work themselves into a frenzy. Unfortunately, Simon ends up running onto the beach where the boys mistake him for the "beast" and brutally murder him. The title of the chapter not only alludes to Simon's discovery of the dead paratrooper but also his brutal murder.
The first significance is fairly obvious - Simon dies at the end of this chapter. He comes down from the mountain to tell the boys that he understands who/what the beast is and the boys, already in a state of adrenalin, descend upon him and kill him.
However, besides death, the word "view" is significant for this chapter. Simon is the prophet of the group. A sensitive and intelligent boy, he views the dead pig's head. Suffering from the heat and exhaustion, Simon imagines that the pig's head has talked to him, telling him about the fear and the violence and what it is really from. Having been enlightened by this, Simon goes up the mountain to "view" the beast. He understands that the beast is the dead pilot and his parachute. This "view" sends him to spread the message to the boys. The death of the pig and the death of the pilot have been the views that will lead to Simon's own death.