- Frequent-flier mileage awards a challenge

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If you’ve tried to redeem your frequent-flier miles for a flight to no avail, you’re not alone. Meager availability of mileage award seats is a common complaint among airline customers. And in some situations, redeeming miles for flights on Delta Air Lines can be particularly difficult.

http://www.ajc.com/business/frequent-flier-mileage-awards-577852.html