Airline sites are the worst in this regard. United, American, Delta, etc. bounce you around between multiple phishy-looking domains to redeem miles or use thei

Airline sites are the worst in this regard. United, American, Delta, etc. bounce you around between multiple phishy-looking domains to redeem miles or use their benefits. And none of them use their own site as a proper OpenID connect or OAUTH IDP and require re-logging in with your airline username and password on different domains!