Transportation & Travel Northwest Regional Airport offers a friendly atmosphere, quality customer service and prompt boarding. The airport is conveniently located 20 minutes south of Okoboji, in Spencer and serves general aviation and United Express. Storage hangers are availbable for private aircraft. Whatever your destination, let Northwest Regional Airport take you there! Visit their website at www.spenceria.org/airport. The Regional Transit Authority (RTA) provides transportation on Rides buses to the public. A morning and afternoon route with designated pick-up spots runs between Milford and Spirit Lake throughout the year, five days a week. In the summer, the route is extended to seven days a week. Taxi service is available. For more information about designated pick-up spots or other services, call (712) 262-7920 or (800) 358-5037.