Taking the bus is the primary option, suitable for those seeking a direct route with few stops. The downside is the long travel time to reach your destination.
Traveling from Sukhothai to Ayutthaya is done by bus and takes about 360 minutes. It's a fairly long journey, so consider if this suits your plans. Prices range from 450 to 900 THB, so it's wise to check your budget before deciding.
The bus is the cheapest option, but be prepared for a journey of around 6 hours. Check for the lower end of the price range based on available schedules.
For families, the bus can be cost-effective, but the long duration might be challenging with children. It's important to plan accordingly.