I feel the same way so, you're not alone. I was super excited to try out Hipmunk but I find it to be cluttered, confusing and not informative. I don't know if its a left brain/right brain thing - maybe I'm just not a visual person, but I much prefer a grid style listing like the travelocity example you showed. I can't really tell what's going on with hipmunk.

Additionally - time is very rarely an important sorting criteria for me. I take the same half dozen flights regularly and I know what times they depart and arrive - I don't need to see that laid out. What I need to see is the price to book it.