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Weather and volume of flights perform the best with West Coast airlines achieving the best on-time rates for several years.
Airlines are doing a better job of arriving on time, although more than one in five flights still run late.
The U.S. Transportation Department said Tuesday that the nation’s biggest airlines achieved an on-time arrival rating of 79.6 percent in April. That is up from 77.6 percent in March and 77.3 percent in April 2013.
The government says canceled flights were down, and no domestic flights were stuck on the ground for more than three hours.
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