Due to the delays and mechanical errors, I don't think that I'll fly united anytime soon.

Based on that logic, I should never fly USAirways [some delayed experience and cancelled flights in the past 20 years] Lufthansa [ditto USAirways with some delayed experience and cancelled flights in the past 20 years], Delta [ditto Lufthansa experience], Air France [ditto Delta experience], American [ditto Air France experience], Alitalia [ditto American experience], British Airways [ditto Alitalia experience], SAS [ditto Alitalia experience], BMI [ditto SAS experience], Thai [ditto BMI experience]etc. I've flown all of the above at some time since 1970.

So when the original poster finds an airline which doesn't have delays from mechanicals or weather or whatever, I want to know so that I can enjoy apparently guaranteed delay-free travel.