Originally Posted by
CALMSP
it is surprising that after 20 years, I2I is still only at IAH for UA???
It’s really a function of the airport, not the airline. The very few US airports that have I—>I baggage transfer are generally the ones that have those connecting passengers in significant numbers. IAH, MIA, ATL. I think there are (or were) three others but they escape me at the moment.