Airlines Lighten Up to Cut Fuel Costs

Your ginger-ale doesn't come in a glass anymore on most US Airways flights. On Delta you'll find yourself in a thinner, lighter seat. If you fly JetBlue cross-country, you'll get a dainty bag of 100-calorie crisps in place of the original snack box of cookies, crackers and spreadable cheese.

With jet fuel prices so high, airlines have no choice but to scour their planes for ways to lighten the load. There's no room for even the smallest bits of dead weight, from redundant wing lights to extra wires in the walls. Manufacturers also are using lighter materials in plane construction.

"The pressure is immense" to cut weight, said John Heimlich, chief …