Frontier Airlines deluged with complaints about mileage transfer blunder

More than 100 frequent fliers have filed complaints with the State of Wisconsin this week, saying their Frontier Airlines EarlyReturns miles were never transferred to Delta Air Lines SkyMiles although they met the terms and conditions of the offer. The Journal Sentinel has received more than 50 emails and calls from Frontier customers after two stories in late December and January chronicled other readers' tribulations trying to convert their miles as part of a promotional program launched in anticipation of Frontier cutting back on its Milwaukee flights this summer. Now there's one more reason to be hopeful those problems will finally get resolved: The U.S. Department of Transportation is also accepting complaints. While the agency can't legally do much about promotional offers, staff does generally ask airline liaisons to investigate complaints and encourage airlines to "do what's right" and give customers their miles. "We have received five complaints -- four this week and