I am probably not supposed ask about this here but US Air is what motivates me to trek all the way over to BWI. The parking there irritates me. $30/day or really $60 for a day and a few hours in the main garage unless, "Aw shucks, I lost my ticket."
I just noticed this:
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Daily Lot B
BWI's new convenient parking lot! Located at Elm Rd. and Aviation Blvd., this new parking lot opened on 11/05/01. The new Daily Lot B has 1,400 spaces and is served by closely scheduled shuttle buses from covered bus shelters. Rates are $2 per hour up to the daily maximum of $11 per day.
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It looks like it is closer than the ESP lot -- tried it once and found it chaotic and stressful. Anyone tried "daily lot B"? (Where's lot A?

) I am catching a 15:00 flight -- maybe it's full by then anyway.