Comfortable Accommodations Duncan Inn by OYO in Duncan offers air-conditioned rooms with private bathrooms, refrigerators, work desks, free toiletries, microwaves, bath or showers, and TVs. Essential Facilities Guests enjoy free WiFi, a 24-hour front desk, and free on-site private parking. Convenient Location Located 30 mi from Lawton-Fort Sill Regional Airport, the hotel is near Chisholm Casino.