Okay, after quite a bit of rework, here are the three main elements of the flight search result screen. Basically, you toggle which airlines you want to trust, pick a maximum price, then whittle down the schedule. The schedule still needs some work before it's really usable, but I think I'm on the right track, anyway.
Of course, the design's only part of it. There are a lot of heuristics that need to be applied in order for such a simple process to really work. That'll be the really fun part. :)
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