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FLYING SOLO: Many families flying this summer won't be able to sit together because airlines are reserving a greater number of seats for passengers willing to pay extra to be near a window, aisle or the front of the plane.

THE LATEST FEE: Airlines are searching for more ways to raise revenue to offset rising fuel costs.

DON'T DESPAIR: New seat assignments can be snagged for free starting five days before departure as some elite fliers are upgraded to first class.