Walmart and Alphabet-owned Wing are expanding their drone delivery service to the Seattle and Denver metro areas next year, bringing the service to nearly 20 major U.S. markets.

The expansion is part of the companies’ ongoing plan to offer drone delivery from more than 270 Walmart stores nationwide, according to an announcement Monday from Wing.

“Adding new metros to our expansion speaks to how quickly people across the country are adopting drone delivery,” Heather Rivera, chief business officer at Wing, said in a statement. 

“We’re excited to serve the needs of busy families in nearly 20 major markets spanning diverse communities and climates by delivering the everyday items these families need fast.”

The partnership already provides drone delivery access to more than 3 million customers in markets, including Dallas-Fort Worth, Atlanta, Houston and Orlando.

Wing also noted that expanding into Seattle and Denver will bring the drone service to a wider range of weather conditions, from Pacific Northwest rain to Colorado winters.

“Expanding drone delivery to Seattle and Denver is about giving more customers a practical option when they need something quickly,” Greg Cathey, senior vice president of eCommerce Transformation at Walmart, said in a statement. “Walmart’s stores put everyday items close to the communities we serve, and Wing helps bring those items to customers’ homes in minutes.”

Wing’s drones can fly up to 60 mph and carry packages weighing up to 5 pounds. 

Customers can order tens of thousands of Walmart products, including groceries, electronics and over-the-counter medications, for delivery in minutes.

The expansion comes as major retailers ramp up drone delivery.

Lowe’s announced Sept. 24 that it is launching a drone delivery pilot with Wing in North Carolina, calling itself the first home improvement retailer to offer the service.

Amazon in August announced plans to expand its Prime Air drone delivery network roughly sixfold, targeting nearly 500 U.S. cities and towns by the end of 2026.

FOX Business’ Bradford Betz contributed to this report.