Chiang Mai to Ko Samui runs about 4 times a day, with the first departure around 06:22 and the last around 07:30. One passenger pays between €87.46 and €114.01, every fee included, depending on the operator and the way you travel. The fastest door to door is 4h 55m over 1,065 km, on services run by 1 operator across 1 mode.
What one seat costs
The spread between the cheapest and dearest typical fare on this corridor, across 1 operator and 1 way of making the journey. The operator sets the price on the day.
Typical fares
€87.46 to €114.01
- 133%Moves across the booking window
When it runs, leaving Chiang Mai
No operator has filed a timetable for this direction yet, so the first and last departure below follow the pattern of the corridor. Read them as the shape of the service day rather than as times to turn up for.
- 06:22First departure
- 07:30Last departure
- 4Services per day
- 25%Run direct
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €170.06Tue15
- about €214.90Wed16
- about €199.56Thu17
- about €196.02Fri18
- about €192.48Sat19
- about €200.54Sun20
- about €128.76Mon21
- about €122.86Tue22
- about €150.59Wed23
- about €186.58Thu24
- about €135.25Fri25
- about €161.21Sat26
- about €131.12Sun27
- about €102.64Mon28
- about €99.85Tue29
- about €104.57Wed30
- about €112.24Thu1
- about €109.79Fri2
- about €137.29Sat3
- about €97.49Sun4
- about €87.46Mon5
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The flight gets you into Ko Samui. It does not get you a bed, and neither do we.
A room in Ko Samui for the night the flight gets in
Sort by distance from Bus Terminal and you can see which places are ten minutes on foot and which are not.
Search Ko Samui on AgodaOr compare on Booking.com
Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
When to book Chiang Mai to Ko Samui
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €111.4490 days
- €86.8760 days
- €121.3445 days
- €85.6930 days
- €87.4621 days
- €102.6414 days
- €128.767 days
- €199.563 days
- €170.061 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €85.69.
- How much it moves
- The gap between the cheapest and dearest lead time is 133 percent. The dearest point is €199.56, 3 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Book now Fares on this route are lowest around 30 days ahead. You are inside that window.
This corridor, specifically
Facts that apply to Chiang Mai to Ko Samui and to no other route on the site.
Clocks
Both ends keep the same time, so the arrival is the departure plus the journey.
The shape of it
1,065 km
1,034 km as the crow flies, 3% further by the route services actually take. The bearing runs south.
Who lives at each end
127,240 → 50,000
Population at the departure city and at the arrival city, which is usually what decides how often anything runs.
How we know
Observed
Every operator on this corridor is named in a carrier record.
The route
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 20% of the services we sell on this corridor run through without a change. The remaining 80% involve one connection.
- How far it really runs
- The route covers 1,065 km against 1,034 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Bangkok, Rayong, Phuket, Krabi. The gap between arriving and leaving is 69 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 14 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
The fare from USM into Ko Samui is the one price on this journey we cannot show you, because it is not ours.
A car waiting when you land in Ko Samui
Settled in advance, so the ride into Ko Samui costs what it said it would rather than what the rank says.
Book a transfer from USM with Daytrip
Partner links. We do not operate transfers. We earn a commission on a booking, and the fare is the same as going direct.
Who runs this route
Ko Samui is small enough to see in an afternoon, which is easier without the luggage. Storing it is not our business.
Left luggage near Bus Terminal
Most of the points near Bus Terminal open before the first train and shut after the last one.
Check Ko Samui on StasherOr try Bounce
Partner links. We do not run these networks. We earn a commission on a booking, and the price is the same as going direct.
Questions about Chiang Mai to Ko Samui
The questions people actually ask about this journey, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does it take to get from Chiang Mai to Ko Samui?
The fastest journey from Chiang Mai to Ko Samui takes 4h 55m door to door, of which 1h 57m is spent moving, on the flight. Most services take around 5h 2m, because that average includes slower stopping services and journeys with a connection. Times include reaching the terminal and leaving it at the far end.
How much does it cost to travel from Chiang Mai to Ko Samui?
The cheapest fare from Chiang Mai to Ko Samui is €87.46, as of 14 September 2026. A typical fare across the next three weeks is €140.56. Both figures are the total for one passenger, including taxes, supplier fees and our service fee, so nothing is added at checkout.
What is the cheapest way to get from Chiang Mai to Ko Samui?
The cheapest way from Chiang Mai to Ko Samui is by flight, at €114.01 for one passenger on 5 October 2026. That journey takes 5h 7m door to door. Cheaper is rarely faster on this corridor, and the comparison table on this page shows what each mode costs against what it saves.
When should I book Chiang Mai to Ko Samui?
Fares from Chiang Mai to Ko Samui bottom out around 30 days before departure, at €85.69. Across the whole booking window the gap between the cheapest and the dearest lead time is 133 percent, measured on 14 September 2026. Booking inside the last week has consistently cost more on this corridor.
Which day of the week is cheapest for Chiang Mai to Ko Samui?
Monday is the cheapest day to depart from Chiang Mai to Ko Samui, at €102.64. That is the median of 21 priced departure days across the next three weeks, as of 14 September 2026. Shifting a departure by one day is usually worth more than shifting the booking by one week.
Which month is cheapest for Chiang Mai to Ko Samui?
February is the cheapest of the next 6 months to travel from Chiang Mai to Ko Samui, at €71.53 for one passenger. Each month is priced on its fifteenth, so the comparison is like for like rather than a mix of weekends and midweek departures.
Who runs services from Chiang Mai to Ko Samui?
1 operators sell services from Chiang Mai to Ko Samui across 1 mode: Bangkok Airways. Journey times, fares and fare conditions differ between them, and the operator table on this page compares all of them on speed, flexibility and what is provided on board.
Is there a direct service from Chiang Mai to Ko Samui?
20 percent of the services we sell from Chiang Mai to Ko Samui are direct. The rest connect at Bangkok, Rayong, Phuket, Krabi, with about 69 minutes between the two services. Both legs are sold on one booking, so a missed connection is rebooked at no charge.
Which station or terminal do services from Chiang Mai to Ko Samui use?
Services from Chiang Mai to Ko Samui by flight leave from Chiang Mai CNX and arrive at Ko Samui USM. Allow about 3h 10m in total for reaching the departure terminal and leaving the arrival one, which is already included in every door to door time on this page.
Can I change or refund a ticket from Chiang Mai to Ko Samui?
0 of the 1 operators we sell from Chiang Mai to Ko Samui allow a change or a refund. A change on a changeable fare costs €5.00. The operator table on this page names which is which, and the condition is shown again before you pay.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon, Distances
- On this page
- Every figure above was computed for Chiang Mai to Ko Samui on 14 September 2026: 1065 km of route against 1034 km in a straight line, 5 services a day, 1 operator a cheapest fare of €87.46, and 4h 55m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
Being on the water gives Ko Samui a set of days out that do not start at a station. We do not sell those either.
Day trips out of Ko Samui and across Thailand
Day trips that leave Ko Samui in the morning and cover a good part of Thailand by evening.
See Ko Samui on KlookOr browse GetYourGuide
Partner links. We do not sell tours or tickets. We earn a commission on a booking, and it never changes the price.
The two ends, compared
Chiang Mai reaches 42 places in 11 countries on services we hold, over distances from 77 to 4,920 km. Ko Samui reaches 9 places in 5 countries, from 198 to 2,388 km.
Other ways to make this journey
Leaving Chiang Mai
- 42Places you can leave for
- 11Countries
- 28Operators
Arriving in Ko Samui
Leaving Ko Samui
- 9Places you can leave for
- 5Countries
- 3Operators