Wine tasting event in McMinnville, Ore. George Rose | Getty Images

In the past 10 years the wine industry in Oregon and Washington has ripened into big business, with Oregon's 465 wineries now contributing close to $3 billion to the state's economy each year and Washington's 800 wineries pouring more than $8.6 billion into the state's coffers. But while visiting wineries for tastings is now a popular tourist activity in many parts of the Pacific Northwest, taking home a case of wine can be costly. Shipping a case of wine as freight can cost up to $60 via UPS and checking it as baggage on an airplane can cost $25 or more, depending on the weight of the wine and the number of other bags being checked. (Read more: Food trucks now landing at airports, mobile lots) "Ironically, we'd see people willing to spend $300 to $500 on a case of wine, yet that extra $25 to put it on the plane was a negative," said Duane Wollmuth, executive director of Washington's Walla Walla Valley Wine Alliance. "It did stop people from buying the wine at the wineries." In an effort to stem the flow of lost wine sales, in 2011 Washington wine growers in the Walla Walla area persuaded Seattle-based Alaska Airlines to extend a program it offers to passengers traveling out of California wine country via Sonoma County Airport (STS).

The airline now waives the charge for checking a case of Washington wine for anyone flying out of three airports in the state's winery-rich regions (Pasco/Tri-Cities, Walla Walla and Yakima). Now, instead of just one or two cases of checked wine per week, Alaska Airlines is transporting upward of 30 cases of wine a week per participating airport during peak season, according to airline spokeswoman Bobbie Egan. And the waived fees make a difference. For the 70 wineries in Walla Walla area alone, "the program represents at least a quarter to a half-million dollars of additional wine sales a month in the peak season," said Wollmuth. (Read more: Pittsburgh airport reopening land to bow hunters) Washington's "Taste and Tote" concept, which began as a pilot program,, is being extended. And through Nov. 20, visitors to Oregon's wineries and tasting rooms can take advantage of the Oregon Wines Fly Free program if they're flying on Alaska Airlines from any of four Oregon airports (Portland, Eugene, Medford and Redmond).