DoorDash is a food delivery service that operates all year round, including on Christmas. However, many restaurants and businesses may be closed on Christmas day, so the availability of food and other products may be limited. Additionally, some DoorDash drivers may choose to take the day off to celebrate with their families, which could lead to longer delivery times or no available drivers in certain areas. It's always a good idea to check with the specific restaurant or business you're interested in to see if they are open and if they offer delivery services on Christmas day.