Group Airfare Booking?


Does anyone have any experience booking group rates for airfare? I am traveling with 15 people next April (all family) and the JetBlue website seems to show that you can book group rates for a large family group like that.

I was wondering if anyone had done this in the past and how the fares compared to regular rack fares? We are traveling at a very pricey time to fly out of New England and I am exploring all my options to get the best fares!