Some frequent fliers rely on melatonin to put them to sleep in the air.

一些经常乘坐飞机的人总是依赖褪黑激素在飞机上睡觉。

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But birds are far less likely to suffer from the clot formation called economy class syndrome-despite being frequent fliers.

但尽管小鸟是空中常客，它们不太可能患上我们容易患上的经济舱综合征。

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The term is familiar to frequent fliers who travel through airport "hubs" to make connecting flights from one point to another.

这个词是熟悉的频繁传单谁穿越机场的“枢纽”，使转机，从一个点到另一个。

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Frequent fliers may grumble about increased ticket prices, extra baggage fees, schedule changes and discontinued routes.

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American offers Group 2 boarding, right after elite-level frequent fliers, to passengers without overhead-bin luggage.

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First, many seats on flights are reserved for elite-level frequent fliers or full-fare business travelers.

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