Book online or buy at the station?
Both work. The right choice depends on when you travel and how fixed your plans are.
Buy at the station - usually cheapest
Counter fares are the lowest published price (148-158 THB per seat, depending on the terminal). Best when you're flexible: midweek travel, daytime departures running every hour, and no tight connection. You pay on the spot and take the next available bus.
Book online - pay for a guaranteed seat
Online fares typically run around 30-35% higher than the counter price, in exchange for a reserved seat booked in advance. Worth it when a seat matters more than saving a little: weekends and holidays (popular departures sell out), the last bus of the day, or a fixed plan before a flight.
Either way, the timetable on this page stays the same - only the price and seat guarantee differ.
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