Makes great business sense, put a hub in Florida with junk yields and fares and a poop-ton of competition and close your highest yielding hub and lose out on the 2nd most southern demand to LatAm after Miami metro. Again, if somehow the BoD or the shareholders were asleep and this happened, Delta would take IAH in a heartbeat costing UA billions in revenue. oy

This is not how these things work gang. IAH-GIG has the best yield southbound for UA with EWR-GRU nearlytied, the next three are all from IAH (and the IAH-GIG flight makes bank just on O&D, connections are just funsies for UA on that flight). DEN has the worst int'l numbers but has the geography and heft of domestic haul. Again, LAX is lowest yield, but UA has to be there for certain corporate contracts, and it is the one airport where keeping up with the Joneses becomes a thing sometimes. Witness the 2nd daily UA LAX-HKG that dilutes yield horrible, but is there.

ASMs by UA hub with avg LF from cirium and T100:
SFO 98+ million a day 81.55%
EWR 95+ million a day 84.00%
ORD 71.5 million a day 83.42%
IAH 68.3 million a day 81.50%
DEN 67.9 million a day 84.65%
IAD 49 million a day 81.98%
LAX 40.3 million a day 80.86%

I cannot post the "controlled" revenue numbers but LAX is lowest...by a lot (and IAD is 2nd lowest also by a lot), but UA has to keep a small hub there. And with the new LAX gate allocations the big three will likely stay static though AA and DL are looking to push more maximum gate usage than UA. None of the three can grow too much there.