Will plane tickets be cheaper if I buy the in advance?

So i am planning to go on a trip to the Philippines next summer. I want to leave in June. Will plane tickets be cheaper if i buy them a couple months in advance, maybe in April or May?Will plane tickets be cheaper if I buy the in advance?Buying them is a sterling ideaWill plane tickets be cheaper if I buy the in advance?Yes because i know someone who payed in advance and got for free