Airlines walk a fine line with frequent-flier programs, risking enormous customer backlash if they get too aggressive at enforcing ownership rules.

WSJ: Two Airlines Battle Mileage-Tracking Websites

Airlines failing to comply to the request faced a fine or the potential loss of landing rights in the United States.

CNN: EU will give flight details to US

Other major flight operators such as American Airlines, Delta Air Lines, Qantas, and United Airlines have also sought out prominent chefs in recent years as they attempt create a fine-dining experience in the sky.

CNN: Celebrity chefs create mile-high menus