Delta Vows Suits Over Coupons: The Atlanta-based...

Delta Vows Suits Over Coupons: The Atlanta-based airline said it may file more suits against travel companies that sell its frequent-flier coupons, because the airline wants to stamp out the increasingly widespread practice. Delta is suing Travel Creations Inc., an Atlanta broker, for allegedly buying airline tickets Delta issued for free under the frequent-flier program and selling them to third parties. Spokesmen for Travel Creations could not be reached for comment.