Recently, airlines have received lots of attention for moving longtime standards - baggage, food, drinks, even pillows and blankets - from the "included" pile into the "for an additional fee" pile.

最近，航空公司将长期以来的标准服务——行李托运、餐食、饮品、甚至枕头和毯子——从“机票费用已含”的一类归入“额外收费”的一类，因而广受关注。

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Ticket, baggage and airport fee.

机票，行李和机场费。

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Management points out that the baggage fee actually saves the company fuel and labor fees because it discourages passengers from bringing on the extra weight.

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TripAdvisor's app has a built-in baggage fee estimator: Tell the app how many bags you plan to check and whether you have elite status on any airlines that would waive bag fees and it builds the fee charges into fare quotes you get.

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Kayak offers a flight tracker, a price alert notification service, an airline directory, baggage-fee directory and airport information.

WSJ: To Take the Hassle Out of Traveling, Pack These Apps