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Delta, US Airways, Continental, American, United, and even budget airline Southwest have all jumped on the fare-hike bandwagon over the course of the past several weeks, bringing about a $10 fare increase (each way) for their domestic routes. Delta has also announced a $10 to $40 rate increase (each way) for select international flights. While consumers had been enjoying significantly reduced fares compared to the highs seen in 2008, airlines' battle with rising jet fuel prices and drops in business travel have led to this response.

What would you suggest airlines do to cut costs without raising fares?