Connecting first class cabins for families
On Thai night trains, first class cabins come in pairs joined by a partition that opens. For a family of three or four, book both and get one private four-berth space: 6,943 THB (US$ 206.70) for four on train 9 Bangkok - Chiang Mai, fees included.
Two cabins, one space.
One of the best-kept secrets of Thai rail: every first class car, classic or CNR, is made of two-berth cabins, one lower and one upper berth, and these cabins come in connecting pairs. A partition that unlocks from both sides joins the two spaces.
Book both cabins of a pair and you get a real family suite: four berths, your own door, nobody else.
How the pairs work.
Solid outline: lower berths, wider, with the window. Dashed outline: upper berths. The partition between the two cabins of a pair unlocks from both sides.
A CNR first class car has 12 cabins, so 6 connecting pairs. The partitions join the cabins two by two: the cabin with berths 1 and 2 connects with the cabin with berths 3 and 4, the cabin with berths 5 and 6 with the one with 7 and 8, and so on. Always two consecutive cabins.
The partition must be unlocked from both sides to open. One cabin alone cannot open it: both groups of passengers have to agree.
The connecting pairs (berth numbers)
Which booking for your group?
Two travellers
Book both berths of one cabin. It is private already, no need for a connecting pair.
Family of three
Book both berths of one cabin for two of you, and the whole cabin next door for the third. With the partition open, the two spaces are one, and no stranger can take the fourth berth.
Family of four, the best
Book the four berths of a connecting pair. Partition open, it is a fully private four-berth compartment.
What the pair costs.
On train 9 Bangkok - Chiang Mai, the whole pair of cabins:
Two lower and two upper berths in one booking.
One lower and one upper berth, plus the cabin fare for the cabin next door, in one booking.
Prices include all booking fees, from SRT fares checked October 20, 2026, each group priced as one booking.
Every first class train from Bangkok
| Train | Route | 4 travellers | 3 travellers | |
|---|---|---|---|---|
| 9CNR first class sleeper | Bangkok - Chiang Mai18:40 → 07:15+1 | 6,943 THB (US$ 206.70) | 6,324 THB (US$ 188.27) | Book → |
| 13Classic first class sleeper | Bangkok - Chiang Mai20:05 → 08:45+1 | 6,048 THB (US$ 180.05) | 5,281 THB (US$ 157.22) | Book → |
| 37Classic first class sleeper | Bangkok - Hat Yai16:10 → 06:35+1 | 6,692 THB (US$ 199.23) | 5,767 THB (US$ 171.69) | Book → |
| 31CNR first class sleeper | Bangkok - Hat Yai16:50 → 07:05+1 | 7,587 THB (US$ 225.87) | 6,809 THB (US$ 202.71) | Book → |
| 25CNR first class sleeper | Bangkok - Nong Khai20:25 → 06:25+1 | 6,513 THB (US$ 193.90) | 6,000 THB (US$ 178.62) | Book → |
| 85Classic first class sleeper | Bangkok - Surat Thani19:50 → 06:23+1 | 5,538 THB (US$ 164.87) | 4,897 THB (US$ 145.79) | Book → |
| 83Classic first class sleeper | Bangkok - Trang18:50 → 08:30+1 | 6,182 THB (US$ 184.04) | 5,382 THB (US$ 160.23) | Book → |
| 23CNR first class sleeper | Bangkok - Ubon Ratchathani21:05 → 06:00+1 | 6,366 THB (US$ 189.52) | 5,889 THB (US$ 175.32) | Book → |
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How to book a connecting pair.
- Search your route and pick first classEnter your route (for example Bangkok - Chiang Mai), choose a train and click "Book" next to first class sleeper (AC).
- Find a free connecting pairOn the seat map, look for two neighbouring cabins of the same pair with all four berths free.
- Select your cabinsFour of you: select the four berths of the pair. Three of you: select both berths of one cabin and tick "Book the whole cabin" on the other, so no stranger gets the free berth.
- Complete and payEnter each passenger and pay. The official SRT e-tickets arrive by email, one per passenger.
- On board: unlock the partitionThe partition is usually closed at departure. Since both cabins are yours, unlock it from both sides and open it. The train staff can help if needed.
Book early
You need two neighbouring cabins with all four berths free at the same time, the hardest combination to find late. Book in the first days after sales open, 90 days ahead at 08:30 Bangkok time, even in low season.
Quick answers.
How do I spot connecting cabins on the seat map?
They are always two consecutive cabins: berths 1-2 with 3-4, 5-6 with 7-8, and so on up to 21-22 / 23-24. On the YesMyTrips seat map, they sit side by side: look for two neighbouring cabins of the same pair with all four berths free.
When should I book the whole cabin, and when is it useless?
If you are four and book the four berths of the pair, you already fill every bed: no stranger can come in and the partition opens freely. The cabin fare only helps when you are three: you book both berths of one cabin, and the whole cabin next door for the third person. Otherwise the free berth of that cabin could be sold to a stranger.
Do all first class cars have connecting cabins?
Yes. SRT first class is always made of closed two-berth cabins, on the new CNR cars and on the older ones, and the cabins always come in connecting pairs. That covers every train with first class: 8 trains from Bangkok, listed above.
Can I book three of the four berths and leave the fourth empty?
You can, but avoid it. The free berth can be sold to someone else, and then the pair loses its point: the partition only opens if both sides agree, and a stranger has no reason to let you open it. One of your group ends up behind a closed partition, next to a stranger. For three, book both berths of one cabin and the whole cabin next door instead.
Can children travel in CNR first class?
Yes. Children under 3 and under 100 cm travel free, without their own berth. Children up to 11 and under 150 cm pay a child fare. In a connecting pair, parents can take the wider lower berths and the children the upper ones, or the other way round depending on age, and keep an eye on everyone at night.
How early should I book connecting cabins?
First class sells first, and you need two neighbouring cabins with all four berths free at the same time: the fuller the train, the rarer the combination. Book in the first days after sales open, 90 days ahead at 08:30 Bangkok time, even in low season, and on opening day from November to February and at Songkran. See the booking window guide.
Sources & verification. First class car layout checked on the SRT D-Ticket system. Fares from the SRT timetables, October 20, 2026. Cabin numbering and the connecting logic are the same on every train.
Your family suite, on the train.
Live availability, all fees included, official SRT e-ticket by email.
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