Originally Posted by
brendog
What time of day? I've been through customs/CBP at EWR a few dozen times, and it has ranged from 15 minutes to 2+ hours. As you'll conceivably be connecting to UA/CO, baggage recheck will be fairly easy. Also, it depends as to whether you'll be clearing in B or C.
I'd say 1h40m is cutting it close, but it should be doable if you don't come in at a peak time and you hustle.
Been there, done it.
Your guess is as good as anyone's. Time is relative to the time you have to spend. It could go quickly or like Van Winkle. Home AP....use it frequently.