BUSINESS BRIEFING / AIRLINES

Flights on U.S. airlines were on time more frequently in April than in March and improved from a year earlier, according to data from the Department of Transportation.

Hawaiian Airlines had the best on-time performance, while Comair, a subsidiary of Delta Air Lines Inc., had the worst. Among legacy carriers, Northwest Airlines, operated by Atlanta-based Delta, was on time the most, and Continental Airlines Inc. posted the worst on-time performance.

The airlines reporting had a combined average on-time rate of 79.1%, compared with 78.4% in March. Last April the on-time arrival rate was 77.7%.