Delta is enticing members to fly into or out of its Cincinnati hub by offering up to 25,000 bonus miles on roundtrip nonstop flights completed by May 12, 2009. SkyMiles members who fly between Cincinnati and 15 participating cities, including Atlanta, Dallas, Denver, Los Angeles and Phoenix, can earn 3,000 miles for the first roundtrip flight, 3,000 miles for the second roundtrip flight, 4,000 miles for the third roundtrip flight, 5,000 miles for the fourth roundtrip flight and 10,000 miles for the fifth roundtrip flight. After flying five roundtrip flights, members will earn a total of 25,000 bonus miles–enough for a roundtrip domestic award ticket.

Registration between Feb. 12 and May 12, 2009 is required and qualifying flights include any Delta, Northwest, Northwest Airlink (includes Mesaba, Pinnacle, and Compass) or Delta Connection carrier flights. Codeshare flights are not eligible to earn the bonus miles. Go to http://www.delta.com/cvgbonus to register for the promotion.