Here is some information that I hope you will find helpful:
-Last minute airfare can be cheaper (sometimes, but not always), but also comes with more restrictions, and does not allow you the opportunity to easily change dates around.
-The bereavement fare is not always the lowest fare, although many times (especially in last minute situation) it can be. It can also be more flexible when you need to change dates around.
Most airlines offer the fare, although all airlines differ in their prices for bereavement fares, and usually you are to pay full price up front and then submit the "evidence" of the death in the family (because a lot of people take advantage of the lower fare) to get a refund.
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