Bangkok to Hanoi overland
There is no through train. This is what the honest answer looks like.
2 legs · 2 days · 2 borders · about $64 all in
Open this route in the planner Change the pace, the beds or the passport and the numbers follow.
Richard Mortel from Riyadh, Saudi Arabia · CC BY 2.0Pragmatic routing
Bangkok Hanoi overland
Bangkok to Hanoi is a rail journey for part of its length and an honest slog for the rest: 2 legs (1 on rails, 1 by road) across 3 countries, with 2 frontiers in between. The one to watch: Vientiane (Khamsavath) depends on an SRT arrival being roughly on time. Be clear-eyed about the 20h coach from Vientiane to Hanoi — there is no railway on that corridor and no way to dress the bus up as anything else.
Stations that catch people out
- Krung Thep Aphiwat Bangkok's long-distance terminal since 2023 — not the old Hua Lamphong. Confirm which terminal your specific train uses.
- Pak Chong The railhead for Khao Yai. The park gate is a further songthaew or taxi ride.
- Vientiane (Khamsavath) Serves ONLY southbound trains to Thailand. 15 km from Banthen, no rail link between them.
The route
Durations are typical scheduled running times, not departures, and the figure under each service is how often it runs — the number that decides whether a missed connection costs you an hour or a day. Where a last departure is shown it is the one worth setting an alarm for. No planner in this region can give you a departure time you should trust: the operators publish nothing in common. Take these legs to the booking sites below and read the real clock there.
| Leg & operator | Time | Fare | |
|---|---|---|---|
| 1 | Krung Thep Aphiwat Vientiane (Khamsavath) State Railway of Thailand Reported Rapid 133/134 · Special Express 25/26 5 a day · two by day, three overnight to Bangkok via Pak Chong · Korat · Khon Kaen · Udon Thani · Nong Khai Book with SRTdticket.railway.co.th | 10h 54m | $34 |
| Change at Vientiane (Khamsavath) allow 2 h minimum International border with a change of vehicle | |||
| 2 | Vientiane (Khamsavath) Hanoi Long-distance coach Reported Sleeper coach via Nam Phao / Cau Treo 1 a day · one sleeper coach in the evening, from the bus terminal not the station last 18:00 There is no railway between Laos and Vietnam. None is built and none is imminent. This is a twenty-hour bus and it should be planned as one — the coach leaves from Vientiane's bus terminal, not from either railway station. No bookable site of its own — try 12Go12go.asia | 20h | $30 |
Day by day
Shape, not a timetable. This is built from running times, the connection buffers above and your chosen pace — it deliberately states no departure time, because none of these operators publish one this page could stand behind. Use it to decide how many nights to book and where; use the operator sites for the clock.
- Bangkok Vientiane Rapid 133/134 · Special Express 25/26 10h 54m
- Vientiane Hanoi Sleeper coach via Nam Phao / Cau Treo 20h
Where you sleep
Every night on this route is spent moving — 1 aboard a sleeper, a bed already inside the fare. Nothing to book and nothing to pay.
Border crossings
Itineraries die at frontiers, not on track. Never plan one of these without checking the current position for your own passport.
Khamsavath ↔ Nong Khai
Laos ↔ Thailand- Where
- Lao formalities at Khamsavath, Thai immigration and customs at Nong Khai
- On the train?
- Yes, on the through sleeper
- Luggage
- Yes — all luggage comes off the train at Nong Khai for customs
- Visa
- Lao visa-on-arrival is generally available; Thai entry is visa-exempt for many nationalities. Confirm for your passport.
- Cash on the far side
- Small amounts of Thai baht and Lao kip.
- Time cost
- About 60 minutes of formalities
The trap. You must take every bag off the train at Nong Khai for customs. Travellers who do not know this get caught out at night, half asleep, and hold up the carriage. Separately: arriving at Khamsavath does not put you on the Laos–China Railway — that is Banthen, 15 km away, different gauge, separate ticket.
Nam Phao ↔ Cau Treo
Laos ↔ Vietnam- Where
- Mountain road border, mid-journey on the sleeper coach
- On the train?
- Bus stops, everyone off and back on
- Luggage
- Yes
- Visa
- Vietnamese e-visa in advance. Confirm your chosen crossing point is one where e-visas are accepted.
- Cash on the far side
- Small US dollar notes and Vietnamese dong.
- Time cost
- About 120 minutes of formalities
The trap. The crossing often happens in the small hours, and unofficial "stamping fees" are common here. It is the least comfortable border in this whole network, on the least comfortable leg.
Where this breaks
Ranked by what actually ends trips, not by probability. A missed last connection costs a day and an unplanned hotel; a missed afternoon connection costs an afternoon.
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caution
Vientiane (Khamsavath) depends on an SRT arrival being roughly on time
SRT long-distance services routinely run 30 to 90 minutes late, and southbound to Hat Yai is the worst offender. It is the arrival that feeds this connection.
What to do. Take the later onward departure, not the first one that appears to connect. An overnight in Hat Yai removes the problem entirely.
Booking sequence
Book in order of scarcity times window length, not in the order you travel. The shortest leg on the whole spine sells out first.
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1
State Railway of Thailand
~90 days
Sleepers on trains 9/10 and the southern overnights sell out first.
The official e-ticket site. Foreign cards fail on it fairly often, and an aggregator is the usual fallback when they do.
Book with SRTdticket.railway.co.th -
2
Road legs
Walk-up, except the long coaches
The Vientiane–Hanoi sleeper coach and the Sumatra runs are worth a day or two ahead.
Everything else on this route, in no particular hurry:
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·
Long-distance coach
Several operators run these corridors at varying quality. An aggregator is the sane way to compare them.
No bookable site of its own — try 12Go12go.asia
Where an operator cannot be booked from abroad — the Laos–China Railway above all — an aggregator is the practical route in. They add a fee, and some sell tickets they do not yet hold and buy them when inventory opens, which is a genuine cancellation risk on a scarce sleeper. Prefer the operator wherever the operator actually works, which is most of the time.
No affiliate links on transport. Every booking link above goes straight to the operator or aggregator and earns this project nothing. The operator's own site is listed first because it is usually cheaper and always more reliable, not because of what it pays — that ordering is the most load-bearing judgement on this page and it is not for sale. Booking URLs were last reviewed 2026-07 and are not machine-checked — if one is dead, search the operator name rather than trusting a reseller that ranks well.
Where it does earn. The hotel links in “Where you sleep” and the insurance link below pay a commission, at no extra cost to you. They are marked as paid links. Nothing about them changes a route, a price, or the order of anything: no hotel is recommended over another and no leg is routed differently because of them.
Costs
| Transport, 2 legs | $64 |
| Accommodation, 0 nights | $0 |
| 1 night on a sleeper — a bed you already paid for in the fare | included |
| Total | $64 |
Against flying
2 days, $64, 2 legs versus a flight of roughly 1h 58m gate to gate at somewhere around $64–134. That fare band is estimated from the 980 km great-circle distance, not from live inventory — check it.
On a trip this short the train is genuinely competitive, and it puts you in the middle of a city rather than an hour outside one.
Photography
- Grand Palace — Jakub Hałun, CC BY-SA 4.0, via Wikimedia Commons
- Khao Yai National Park — JJ Harrison (https://www.jjharrison.com.au/), CC BY-SA 3.0, via Wikimedia Commons
- Pha That Luang — Benh LIEU SONG, CC BY-SA 3.0, via Wikimedia Commons
- Hanoi Old Quarter — Richard Mortel from Riyadh, Saudi Arabia, CC BY 2.0, via Wikimedia Commons