Hello!

I've never been to IAH before (live in DFW, so use DFW as my primary airport). This trip, I will be originating at IAH, checking in for a KLM flight at Terminal D. I have TSA Precheck and Clear, but I see that Clear is not available in Terminal D. How are the security lines at Terminal D around 8PM on Sundays? Is there a way to walk to Terminal C or E (both of which have Clear) for expedited security if there is a long line in Terminal D? I will be flying business class, so not sure if that allows me to use any priority screening lines in Terminal D.

I've been reading about all the security mess at Amsterdam airport (multiple hour waits to get through security), so I am trying to plan ahead for my first trip originating out of IAH, don't want any surprises!

Any guidance or recent anecdotal information would be greatly appreciated.

Thanks!