In fact, there are several ways...(^ ^)
(O) First, you definitely want to visit this site to check how much your ticket will cost. Then let's narrow down the fare...(^o^).
(1) Plan ahead! The cheapest ticket nomorally is the 14-day advance purchase. Some airline companies do not require you to purchase 14-day advance like regional airline companies. BUT if you are purchasing from major airline companies, 14-day advance purchase is the cheapest. For the regional airline companies, the fare will get higher and higher
as the inexpensive tickets are gone. So nothing is better than "plan ahead."
(2) Next cheapest fare will be 7-day advance purchase.
(3) Then..next cheapest fare will be last minute puchase. This "last minute" means the normal fare (no discount at all). Anything less than 7-day advance purchase has "same" fare (almost same).
(4) So does that mean that there are no last minute discounted tickets? What if you are in Emergency? Or need to purchase the last minute discounted tickets?
Well....? Who said that you MUST take the US major airline companies? There always are regional airline companies which do not require any advance purchase like Air South, Eastwind Airways, Tower Air, and etc...Please check the list of regional airline companies and see more precise informations about those companies.
(7) For international...click here.
(6) So...nothing is left huh? Actually not! Now, no special discounts from airlines companies, no last minute super fare, all the seats are sold out, but I still want to go to see my girlfriend/boyfriend who is thousands of miles away from here...what can I do?