MIXED RESULTS FOR FRONTIER STATISTICS

Denver- based Frontier Airlines had its worst on- time performance in four months in November, while its work to reduce customer complaints continues to pay off, according to federal data released Friday.

Frontier arrived on time 74 percent of the time in November, down from 85.1 percent the previous month, according the U. S. Department of Transportation.

It’s Frontier’s worst on- time performance since July and put the ultra- low- cost carrier in last place among the top 13 U. S. airlines.

Spirit Airlines, previously in last in the rankings, was on time 75.3 percent of the time. The average for all airlines was 83.7 percent.

“We had a bump that month,” said Frontier spokesman Jim Faulkner, citing bad weather in Denver around Thanksgiving. “Our on- time numbers are trending in the right direction.”

Denver International Airport overall was the third- worst among the 29 reporting airports, with 80.5 percent of arrivals landing on time.

According to DOT data, there were 3.05 customer complaints for Frontier per 100,000 boardings in November. That put the carrier toward the bottom of the rankings — only Spirit had more at 10.75— but the numbers still show improvement. Frontier’s complaints were down from October’s 3.69, which in turn were down 45 percent from September.

Faulkner credited a companywide effort, such as expanding the operation hours of its the central baggage office service. But he said there’s still room to improve.