Chiang Rai to Koh Samui CEI → USM
Chiang Rai International Airport (CEI) → Koh Samui Airport (USM)
The cheapest one-way found recently is $240 with Thai Lion Air, 26 Dec, found 2 days ago.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $134 to $190.
Cheapest one-way found recently
$240
26 Dec · Thai Lion Air
Chiang Rai International Airport (CEI) → Koh Samui Airport (USM)
Leaves 2:40 p.m. · 5 h 50 min trip
1 stop
found 2 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$240 26 Decfound 2 days agoOpen this trip
$128 14 Feb 2027found 6 days agoOpen this trip
What have prices looked like?
Over 17 days, 26 Sept to 18 Oct, the cheapest one-way we saw each day was $128 to $186.
At $240, the cheapest one-way found recently is above that range.
17 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 26 Dec to 22 Feb 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 26 Dec to compare.
Every date we hold
3 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Dec | $240 | Thai Lion Air | Chiang Rai International Airport (CEI) → Koh Samui Airport (USM) | 1 stop | found 2 days ago | Open this trip |
| 14 Feb 2027 | $128 | Thai AirAsia | Chiang Rai International Airport (CEI) → Koh Samui Airport (USM) | 1 stop | found 6 days ago | Open this trip |
| 22 Feb 2027 | $139 | Thai AirAsia | Chiang Rai International Airport (CEI) → Koh Samui Airport (USM) | 1 stop | found 6 days ago | Open this trip |
Which month looks cheapest?
February 2027 is the cheapest month — from $128.
Airlines on the cheapest dates: Thai AirAsia, Thai Lion Air.
Premium cabin fares from Chiang Rai to Koh Samui
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 26 Dec in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Chiang Rai to Koh Samui?
One-way
Not enough history yet: in 17 days of one-way prices, 26 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
One-way
Chiang Rai → Nakhon Si Thammarat
125 km from Koh Samui
$80
$160 less than flying to Koh Samui
17 Dec · CEI → NST · 1 stop
found yesterday
Chiang Rai → Surat Thani
94 km from Koh Samui
$130
$110 less than flying to Koh Samui
29 Dec · CEI → URT · 1 stop
found 4 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest one-way found recently is for 26 Dec. A live search on this page shows what those dates cost now, for one adult in economy.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work