Yes, Grab operates 24 hours a day in Bangkok as of 2026. Because Bangkok is a "city that never sleeps," demand for rides remains consistent throughout the night, particularly around major hubs like Sukhumvit, Khaosan Road, and both international airports (Suvarnabhumi and Don Mueang). Travelers can book various services, including GrabCar, GrabTaxi, and GrabBike, at any hour using the mobile app. However, users should be aware that while the service is available, "Dynamic Pricing" (surge pricing) is common during the late-night hours when bars close or during heavy tropical rainstorms. Additionally, while drivers are available 24/7, finding a ride in more remote residential outskirts of the city at 3:00 AM may take slightly longer than in the central business districts. For early-morning airport runs in 2026, the app also offers an "Advance Booking" feature, allowing you to schedule a pickup up to 90 days in advance to ensure a driver is assigned for your specific departure time.