Ko Samui to Udon Thani runs about 1 times a day, with the first departure around 07:30 and the last around 07:30. One passenger pays €114.60, every fee included. The fastest door to door is 7h 43m over 962 km, on services run by 2 operators across 1 mode.
What one seat costs
Every operator we hold on this corridor starts at €114.60, so there is no spread to show.
Typical fares · Priced for 12 October 2026
€114.60
- 257%Moves across the booking window
257%When it runs, leaving Ko Samui
Typical first and last departure on this corridor.
- 07:30First departure
- 07:30Last departure
- 1Services per day
- 0%Run direct
07:30
07:30
1
0%Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €364.76Thu24
- about €275.67Fri25
- about €271.54Sat26
- about €193.66Sun27
- about €170.06Mon28
- about €145.28Tue29
- about €168.29Wed30
- about €187.17Thu1
- about €157.67Fri2
- about €179.50Sat3
- about €158.26Sun4
- about €148.82Mon5
- about €122.86Tue6
- about €129.35Wed7
- about €134.66Thu8
- about €139.38Fri9
- about €146.46Sat10
- about €129.35Sun11
- about €114.60Mon12
- about €120.50Tue13
- about €122.86Wed14
Based on what this route has cost recently. The live fare is confirmed when you book.
The flight gets you into Udon Thani. These two partners take it from there, and the bed is theirs to book.
A room in Udon Thani for the night the flight gets in
Sort by distance from Udon Thani Railway Station and you can see which places are ten minutes on foot and which are not.
Search Udon Thani on AgodaOr compare on Booking.com
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When to book Ko Samui to Udon Thani
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €102.2190 days
- €111.0660 days
- €112.8345 days
- €110.4730 days
- €122.8621 days
- €129.3514 days
- €168.297 days
- €271.543 days
- €364.761 days
- Cheapest lead time
- Fares bottom out around 90 days ahead, at €102.21.
- How much it moves
- The gap between the cheapest and dearest lead time is 257 percent. The dearest point is €364.76, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 90 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 90 days ahead. You are inside that window.
This corridor, specifically
Facts that apply to Ko Samui to Udon Thani 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
962 km
929 km as the crow flies, 4% further by the route services take. The bearing runs north.
Who lives at each end
50,000 → 130,531
Population at the departure city and at the arrival city, which is usually what decides how often anything runs.
The route
What the journey looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 0% of the services we sell on this corridor run through without a change. The remaining 100% involve one connection.
- How far it really runs
- The route covers 962 km against 929 km in a straight line, a detour of 4 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Bangkok. The gap between arriving and leaving is 86 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 11 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 UTH into Udon Thani is set by whoever drives it.
A car waiting when you land in Udon Thani
Settled in advance, so the ride into Udon Thani costs what it said it would rather than what the rank says.
Book a transfer from UTH with Daytrip
Partner links. We earn a commission on a booking, and the fare is the same as going direct.
Who runs this route
The flight gets in hours before any room is ready. Holding a bag is not what we sell.
Left luggage near Udon Thani Railway Station
Most of the points near Udon Thani Railway Station open before the first train and shut after the last one.
Check Udon Thani on StasherOr try Bounce
Partner links. We earn a commission on a booking, and the price is the same as going direct.
Questions about Ko Samui to Udon Thani
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 Ko Samui to Udon Thani?
The fastest journey from Ko Samui to Udon Thani takes 7h 43m door to door, of which 4h 44m is spent moving, on the flight. Most services take around 8h, 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 Ko Samui to Udon Thani?
The cheapest fare from Ko Samui to Udon Thani is €114.60, as of 23 September 2026. A typical fare across the next three weeks is €148.82. 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 Ko Samui to Udon Thani?
The cheapest way from Ko Samui to Udon Thani is by flight, at €114.60 for one passenger on 12 October 2026. That journey takes 8h 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 Ko Samui to Udon Thani?
Fares from Ko Samui to Udon Thani bottom out around 90 days before departure, at €102.21. Across the whole booking window the gap between the cheapest and the dearest lead time is 257 percent, measured on 23 September 2026. Booking inside the last week has consistently cost more on this corridor.
Which day of the week is cheapest for Ko Samui to Udon Thani?
Tuesday is the cheapest day to depart from Ko Samui to Udon Thani, at €122.86. That is the median of 21 priced departure days across the next three weeks, as of 23 September 2026. Shifting a departure by one day is usually worth more than shifting the booking by one week.
Which month is cheapest for Ko Samui to Udon Thani?
February is the cheapest of the next 5 months to travel from Ko Samui to Udon Thani, at €93.95 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 Ko Samui to Udon Thani?
2 operators sell services from Ko Samui to Udon Thani across 1 mode: Bangkok Airways, การรถไฟแห่งประเทศไทย. 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 Ko Samui to Udon Thani?
0 percent of the services we sell from Ko Samui to Udon Thani are direct. The rest connect at Bangkok, with about 86 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 Ko Samui to Udon Thani use?
Services from Ko Samui to Udon Thani by flight leave from Samui International Airport USM and arrive at Udon Thani Railway Station. Allow about 1h 57m 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 Ko Samui to Udon Thani?
1 of the 2 operators we sell from Ko Samui to Udon Thani 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 names this operator on this pair, carried through unchanged.
Prices come from the supplier wherever we hold a live quote. Elsewhere we show an indicative price built from the real distance, the real operator and a fare curve over lead time, day of the week and season. Those are labelled Estimated fare and cannot be booked.
Defined in full at Door to door, Fares, The booking window, Carbon, Distances
- On this page
- Every figure above was computed for Ko Samui to Udon Thani on 23 September 2026: 962 km of route against 929 km in a straight line, 1 services a day, 2 operators a cheapest fare of €114.60, and 7h 43m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
The flight is the simple part. What you do once you are in Udon Thani is somebody else's catalogue.
Day trips out of Udon Thani and across Thailand
Day trips that leave Udon Thani in the morning and cover a good part of Thailand by evening.
See Udon Thani on KlookOr browse GetYourGuide
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The two ends, compared
Ko Samui reaches 40 places in 16 countries on services we hold, over distances from 36 to 9,333 km. Udon Thani reaches 66 places in 2 countries, from 36 to 1,184 km.
Other ways to make this journey
Leaving Ko Samui
- 40Places you can leave for
- 16Countries
- 4Operators
16
4Arriving in Udon Thani
Leaving Udon Thani
- 66Places you can leave for
- 2Countries
- 9Operators