Plan to arrive at an airport one hour before domestic departures.

搭乘国内班机提前一个小时到达机场。

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Allow 15 minutes of extra time to get to appointments. Plan to arrive at an airport one hour before domestic departures.

为约会预留15分钟时间。搭乘国内班机提前一个小时到达机场。

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United, for example, had 527, 000 domestic flight departures in 2012, while JetBlue had 227, 000.

BBC: Virgin tops US airline industry report

The regionals are now responsible for 53% of U.S. departures and have accounted for six domestic fatal crashes since the last crash of a major domestic flight, which occurred in New York in 2001.

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United has also had a slight increase in US domestic bookings, and improvements in customer satisfaction and on-time arrivals and departures.

BBC: United Airlines trims losses