The days of banking unused nonrefundable airline tickets are over, at least for clients of US Airways, American, Continental, Delta, Northwest, and United. The airlines' nonrefundable fares are now unusable after the scheduled date of travel if the traveler does not confirm itinerary changes beforehand.

How the new changes will affect meetings remains to be seen, with possibilities ranging from increasing use of more expensive refundable tickets (including zone fares), booking air closer to the meeting date, and considering cancellations more carefully.

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