The most punctual North American airlines:
Delta Air Lines: 84.72% on-time arrival; 1,635,486 total flights.
Alaska Airlines: 82.25% on-time arrival; 404,925 total flights.
American Airlines: 80.61% on-time arrival; 1,998,844 total flights.
United Airlines: 80.04% on-time arrival; 1,513,432 total flights.