Alaska Airlines in July was the most punctual major North American carrier

with an on-time arrival ratio of 88 percent, according to FlightStats. US Airways (82.5 percent) and Delta Air Lines (79.8 percent) followed. Air Canada ranked last among major North American airlines at 61 percent. When including smaller carriers, Alaska regional partner Horizon Air secured the top spot with a 92.7 percent on-time ratio, followed by Hawaiian Airlines at 88.8 percent.