Mesa Leads USA in Canceled Flights. Mesa Airlines canceled the highest percentage of flights in January, the latest month the statistics are available from the federal Bureau of Transportation Statistics. The carrier, which operates regional flights for Delta, United and US Airways, scrubbed 4.2% of its scheduled flights for the month. The second-worst mark went to Delta affiliate Atlantic Southeast, which canceled 3.1% of its flights. Rounding out the bottom five: American affiliate American Eagle (3%), Alaska Air (2.9%) and Delta affiliate Comair (2.2%).
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