Chao Phraya Express Boat raised all fares by 1 baht from Monday 5 October 2026, citing diesel at 41.49 baht/litre (as of 24 September). Examples: Nonthaburi-Wat Rajsingkhon orange line 18 to 19 baht; Pak Kret-Sathorn green-yellow line 35 to 36 baht. The company says it will cut fares again if diesel falls. For a business, this is a small added commuting cost for staff or delivery crews who use the river route, and a signal that transport costs are rising with diesel.