Cheap flights from Chengdu to Koh Samui from $192 CTU, TFU → USM
Chengdu Shuangliu International Airport (CTU), Chengdu Tianfu (TFU) → Koh Samui Airport (USM)
The cheapest return found recently is $557 with Thai Lion Air, 23 Dec – 18 Jan 2027, found 2 days ago. The cheapest one-way found recently is $192 with Thai AirAsia, 23 Apr 2027, found 5 days ago.
- Cheapest one-way found recently
- $192, found 5 days ago
- Cheapest return found recently
- $557, 23 Dec to 18 Jan 2027
- Usual return price
- $561 to $576
- Cheapest month to fly
- February 2027, return fares from $440 found in the last 7 days
Return
The cheapest return fare on each of 7 departure dates is usually $561 to $576.
Cheapest return found recently
$557
23 Dec – 18 Jan 2027 · Thai Lion Air
Chengdu Tianfu (TFU) → Koh Samui Airport (USM)
Leaves 8:30 p.m. · Return leaves 6:45 a.m. · 32 h 30 min of travel, both ways together
out 1 stop, back 1 stop
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$557 23 Dec – 18 Jan 2027found 2 days agoSee prices for these dates
$440 26 Feb 2027 – 5 Mar 2027found 8 days agoSee prices for these dates
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $353 to $566.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 7 departure dates from 10 Dec to 26 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 26-night return fares leaving within 3 days of 23 Dec to compare.
Every date we hold
72 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 10 Dec – 27 Dec | $583 | Sichuan Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 4 days ago | See prices for these dates |
| 19 Dec – 21 Jan 2027 | $576 | Spring Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 21 Dec – 21 Jan 2027 | $576 | Spring Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 23 Dec – 18 Jan 2027 | $557 | Thai Lion Air | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 25 Dec – 18 Jan 2027 | $564 | Thai Lion Air | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 24 Jan 2027 – 25 Feb 2027 | $572 | China Southern Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 2 stops, back 1 stop | found 2 days ago | See prices for these dates |
| 26 Feb 2027 – 5 Mar 2027 | $440 | Spring Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | out 1 stop, back 1 stop | found 8 days ago | See prices for these dates |
Which month looks cheapest?
February 2027 is the cheapest month — from $440.
Airlines on the cheapest dates: Spring Airlines, Thai Lion Air, Sichuan Airlines, China Southern Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$192
23 Apr 2027 · Thai AirAsia
Chengdu Tianfu (TFU) → Koh Samui Airport (USM)
Leaves 2:50 a.m. · 17 h 55 min trip
1 stop
found 5 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$192 23 Apr 2027found 5 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 40 days, 24 Sept to 10 Nov, the cheapest one-way we saw each day was $150 to $275.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 23 Apr 2027 to compare.
Every date we hold
2 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Apr 2027 | $192 | Thai AirAsia | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | 1 stop | found 5 days ago | Open this trip |
| 5 Oct 2027 | $270 | Sichuan Airlines | Chengdu Tianfu (TFU) → Koh Samui Airport (USM) | 1 stop | found 5 days ago | Open this trip |
Which month looks cheapest?
April 2027 is the cheapest month — from $192.
Airlines on the cheapest dates: Thai AirAsia, Sichuan Airlines.
Premium cabin fares from Chengdu 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 23 Dec – 18 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 23 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Chengdu to Koh Samui?
Return
The cheapest fares were 180 or more days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $438 | $418 | +3% | 12 |
| 30–59 days | $506 | $417 | +19% | 45 |
| 60–89 days | $589 | $513 | +39% | 47 |
| 90–179 days | $440 | $421 | +4% | 33 |
| 180+ days | $425 | $353 | Cheapest seen | 42 |
One-way
Not enough history yet: in 40 days of one-way prices, 24 Sept to 10 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 23 Dec – 18 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Chengdu to Koh Samui?
The cheapest return found recently is $557 with Thai Lion Air, 23 Dec to 18 Jan 2027, found 2 days ago. The cheapest return we hold, of any age, is $440 with Spring Airlines, 26 Feb 2027 to 5 Mar 2027, found 8 days ago. The cheapest return fare on each of 7 departure dates is usually $561 to $576.
How much is a one-way flight from Chengdu to Koh Samui?
The cheapest one-way found recently is $192 with Thai AirAsia, 23 Apr 2027, found 5 days ago.
What is the cheapest month to fly from Chengdu to Koh Samui?
February 2027 is the cheapest month for a return, from $440, 26 Feb 2027 to 5 Mar 2027, found 8 days ago. April 2027 is the cheapest month for a one-way, from $192, 23 Apr 2027, found 5 days ago.
How far ahead should I book a flight from Chengdu to Koh Samui?
In 49 days of prices between 24 Sept and 11 Nov, return fares were cheapest 180 or more days before departure.
How long is the flight from Chengdu to Koh Samui?
The cheapest one-way found recently, with Thai AirAsia on 23 Apr 2027, takes 17 h 55 min with 1 stop.
Which airlines have the cheapest flights from Chengdu to Koh Samui?
Between 10 Dec and 26 Feb 2027, Spring Airlines has the cheapest return on 3 of the 7 departure dates we hold, Thai Lion Air on 2 and Sichuan Airlines on 1.
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