BERN, Switzerland (AP) _ Air passengers traveling to or over Switzerland should be prepared for delays at the end of February as new air traffic corridors are put in place, Swiss aviation authorities warned Thursday.

The switch Feb. 25, which involves parts of neighboring countries, is the latest phase in a Europe-wide move to create new lanes in the sky. The paths aim to cut air traffic delays, save fuel and reduce passenger and pilot frustration.

"During the initial phase, there is a risk that considerable delays may occur in Europe, and it isn't impossible that some flights may be canceled" the Federal Office for Civil Aviation said.

Six million flights passed through European airspace in 1996 _ and more than 7.5 million are expected by 2000, according to the Eurocontrol air traffic coordinating agency in Brussels.