My US F-1 STEM OPT expires in May 2019 and I am planning to travel outside US in Dec 2018. If I return to US in first week of Jan 2019, my STEM OPT will be valid for less than 5 months when I try to enter. Will that be a problem? More importantly, will it be an even bigger problem while boarding the flight to US since airlines may strictly require 6 months validity whereas CBP may be more lenient, or not?
I have valid passport, valid F-1 visa (valid till 2020), valid EAD card (till May 2019), valid I-20 (till May 2019), and a job.