Who is the target market for this? Most of the comments here are targeted towards the visualization aspect. Isn't the real value in providing people with cheaper fares from the carriers they like?
Personally, flight times and layovers are quite important to me. I'm a ferry ride away from the airport, so leaving early, or arriving late really sucks. Either a night in the car at the dock, or an extra hotel stay.
I put in a search for a flight that I recently booked, and the two top choices were the ones that we had pulled out of tens of kayak searches. They were right there. Not the cheapest, but the most sane. Kayak had a couple of flights in the early results with a 12 hour layover in Pdx followed by a 30 min flight to Seatac. They were way down in the agony listing on hipmonk.
Cheaper fares are not the only factor in selecting a flight. This sort of layout makes it easier to make an informed choice along several other axes as well. It's a better presentation of information that allows easier decision making.
