this is really a crap shoot depending on time of day, day of week, etc,

Saturdays are usually awful- because of all the cruise ship passengers going home- and the extra "saturday only" sections

but it can also be airline dependent- i've seen mobs at AA and CO, nothing at others.

An interesting point- all the concourses are interconnected, airside

so if you see a huge security line at "B" walk over to "C"- it may be no line- and then just walk back airside

i still give it two hours- and once spent an hour in a security line- but if you have no bags to check- or can get boarding passes online or at a kiosk- i'd still allow 90 minutes