When I was flying a lot, I hated SFO. Weather very unpredictable. Denver ok, but always a long distance between gates.
I always liked London Heathrow, in spite of the tight security. Once I arrived for my flight 3 hours early, because the people I was with were going to LA, on a flight 2 hours before mine to SF. Security was nice about it, but they looked at every item in my luggage, including the used underwear, with me present.
LHR seriously SUX
Denver is useless in the Wintertime though. Also dont like that connecting flights are usually at the opposite ends of their long long airport. Especially if you fly United. Its awful.
Ill route through Sky Harbor in PHX to avoid DEN.
Compare that level of intrusiveness to the airport scene in Ocean’s 11 where Dean Martin meets up with Curley Jackson. Sad.
LAX was OK, except for outdated design - no updates to accommodate modern security, and no modern transit to town- although the bus was OK. DFW also suffered from outdated design, but at least they are putting in effort to modernize it one terminal at a time. Unlike MCI in Kansas City - probably one of the worst airports out there. Given the low traffic levels, it wouldn't cost that much to upgrade one of the terminals (and close the others.