When flying from Singapore to Bangkok, two low-cost carriers dominate the route: Scoot (TR) and Jetstar Asia (3K). Both operate multiple daily flights between Changi Airport (SIN) and Suvarnabhumi Airport (BKK), offering budget-friendly fares that can dip below S$100 return during promotions. However, the devil is in the details, baggage allowances, seat pitch, meal quality, and hidden fees can dramatically change the total cost and travel experience. This article provides a head-to-head comparison based on publicly available fare data, airline policies, and passenger experience reports to help you decide which carrier wins for your next Bangkok trip.