I've booked these fares IAD-SEA, SEA-ATL, SEA-LAX, SFO-SEA, SFO-PHL, PHL-SEA, DCA-SEA, BWI-HNL, LAX-IAD and ATL-PHL. I'm a US1 (Chairman's Preferred on US) and have been booking A fares on UA nonstops if they are available. Not only has it saved me a ton of time not having to deal with connections on US but it's also been nice not having to fret about upgrades. However, I admit I've gotten a few dirty looks when UA elites see my First class boarding pass with my US status printed on it while they are waitlisted.