Bangkok to Kanchanaburi

Every regular train to Kanchanaburi starts at Thon Buri, not at Hua Lamphong or the new Krung Thep Aphiwat terminal. Thon Buri station sits on the west bank of the Chao Phraya near Siriraj Hospital, a short walk from the Thonburi Railway pier on the Chao Phraya Express boat. The 07:45 and the 13:55 are third-class ordinary trains with ceiling fans and windows that open, and the flat ฿100 fare for foreigners covers any station on the line, so the same ticket takes you over the bridge to Nam Tok if you stay on. Thai citizens pay ฿25.

There's no advance sale. You buy the ticket at the window on the day, there are no reserved seats, and the trains don't sell out, though you may stand for the first stretch. The ride runs through Nakhon Pathom, past the giant chedi, and across rice fields and sugar cane, and it takes about two and three-quarter hours to Kanchanaburi station, then seven minutes more to the River Kwai Bridge station at the bridge itself.

On Saturdays, Sundays and public holidays there's also an excursion train, No. 909, from Hua Lamphong at 06:30 that stops for half an hour at the bridge and runs on to Nam Tok, coming back the same evening to Bangkok at 19:25, ฿120 return in a fan coach or ฿240 with air-conditioning. It's sold on SRT's D-Ticket site and fills up early.

Floods closed the line beyond Wang Pho in late September 2026, and SRT reopened it as far as Wang Pho, which includes the Tham Krasae viaduct, on 3 October. Bangkok to Kanchanaburi and the bridge weren't affected, but if you plan to ride on to Nam Tok, ask at Thon Buri or call SRT's 1690 line before you go.

If you'd rather be there in two hours, take the bus. First-class buses to Kanchanaburi leave the Southern Terminal, Sai Tai Mai, in Taling Chan on the west side of the city, about every 15 minutes from 05:00 to 22:30 for around ฿110. There are also vans from the Mo Chit van terminal in Chatuchak, about ฿210 booked online, and the tourist minibuses from Khao San Road, ฿415 to ฿490 online, which drop at the bridge, a riverside resort or the bus terminal. The vans that used to leave from Victory Monument moved to the bus terminals in 2016, so ignore older guides that send you there.

The buses arrive at Kanchanaburi's bus terminal in the town center. Kanchanaburi War Cemetery and the Thailand–Burma Railway Centre are in town too, and the bridge is about 3 km north of the War Cemetery, so a songthaew, a Grab or a tuk-tuk gets you to the bridge and the riverside guesthouses.

The M81 Bang Yai–Kanchanaburi motorway changed the drive. It's 96 km of new road from Bangkok's western edge, it opened toll-free at the end of October 2025, and it has charged tolls of ฿45 to ฿150 for a car since 16 January 2026. From a central Bangkok hotel the whole trip is about 125 to 130 km and about two hours, depending on how long it takes to get out of the city.

On 12Go, private cars from Bangkok to Kanchanaburi start at about ฿2,000 and sedans mostly cost ฿2,500 to ฿2,800, door to door. For a family with bags it's the easy option, and you can ask the driver to stop at Nakhon Pathom's chedi on the way.

A day trip works if what you want is the bridge, the Kanchanaburi War Cemetery and the railway museum. On the 07:45 train you're at Kanchanaburi at about 10:30 and the bridge at 10:37, the cemetery and the Thailand–Burma Railway Centre are side by side in town, and the last train back leaves Kanchanaburi at 14:43 (14:34 from the bridge) and reaches Thon Buri at 17:40. That's about four hours on the ground, enough for those three, or take a bus back in the evening and stay longer.

For anything further out, stay at least one night. Hellfire Pass, the cutting where Allied prisoners and Asian laborers dug through rock by hand, is about 80 km northwest of town, and its museum is free and open daily from 09:00 to 16:00. Erawan Falls is about 1.5 hours away by bus 8170, the park charges foreign adults ฿300, and the last bus back to town leaves at 16:30. The 257 continues from the bridge over the Tham Krasae viaduct to Nam Tok, a ride most people do on their second morning. Two nights covers all of it without rushing.

Two trains a day run back to Bangkok, the 07:05 and the 14:43 from Kanchanaburi station (06:59 and 14:34 from the bridge), reaching Thon Buri at 09:35 and 17:40. Charan Sanitwong, one of the last stops before Thon Buri, is next to MRT Bang Khun Non on the Blue Line, which is the easier place to get off if you're heading into the city.

Buses back to the Southern Terminal leave Kanchanaburi's bus terminal through the day, and vans run to Mo Chit and to Khao San Road. For an early flight, a car from your Kanchanaburi hotel to either Bangkok airport costs about the same as one into the city.