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Koh Samui to Chiang Mai in January 2027 USM → CNX

Koh Samui Airport (USM) → Chiang Mai International Airport (CNX)

For departures in January 2027, the cheapest return found recently is $266 with Bangkok Airways, 22 Jan 2027 – 26 Jan 2027, found 5 days ago. The cheapest one-way found recently is $112 with Bangkok Airways, 31 Jan 2027, found 2 days ago.

Return

We hold return fares on only 1 departure date in January 2027, too few to say what one usually costs.

Cheapest return found recently

$266

22 Jan 2027 – 26 Jan 2027 · Bangkok Airways

Koh Samui Airport (USM) → Chiang Mai International Airport (CNX)

out nonstop, back 1 stop

found 5 days ago

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in January 2027

DatesFromAirlineStopsFound
22 Jan 2027 – 26 Jan 2027$266Bangkok Airwaysout nonstop, back 1 stopfound 5 days agoSee prices for these dates

Every date we hold

1 departure date

See every date as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
22 Jan 2027 – 26 Jan 2027$266Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)out nonstop, back 1 stopfound 5 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $218.

October 2026From $2861 departure date27 Oct – 31 Oct · found 5 days agoSee prices for these dates
November 2026From $218Cheapest seen2 departure dates4 Nov – 11 Nov · found 6 days agoSee prices for these dates
January 2027From $2661 departure date22 Jan 2027 – 26 Jan 2027 · found 5 days agoSee prices for these dates
March 2027From $2651 departure date10 Mar 2027 – 13 Mar 2027 · found 2 days agoSee prices for these dates

One-way

In January 2027, the cheapest one-way fare on each of 8 departure dates is usually $130 to $142. Across all 15 departure dates we hold on this route, it is usually $105 to $147. Of the 2 months with enough one-way fares to compare, January 2027 is usually the cheapest.

Cheapest one-way found recently

$112

31 Jan 2027 · Bangkok Airways

Koh Samui Airport (USM) → Chiang Mai International Airport (CNX)

nonstop

found 2 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

FareTell may earn a commission when you book through a partner.

The cheapest dates in January 2027

DatesFromAirlineStopsFound
31 Jan 2027$112Bangkok Airwaysnonstopfound 2 days agoOpen this trip
27 Jan 2027$130Bangkok Airwaysnonstopfound 2 days agoOpen this trip
28 Jan 2027$130Bangkok Airwaysnonstopfound 2 days agoOpen this trip
29 Jan 2027$130Bangkok Airwaysnonstopfound 2 days agoOpen this trip
22 Jan 2027$132Bangkok Airwaysnonstopfound 2 days agoOpen this trip

Every date we hold

8 departure dates

2 Jan 2027: $282, found 6 days ago22 Jan 2027: $132, found 2 days ago23 Jan 2027: $172, found 2 days ago27 Jan 2027: $130, found 2 days ago28 Jan 2027: $130, found 2 days ago29 Jan 2027: $130, found 2 days ago30 Jan 2027: $132, found 2 days ago31 Jan 2027: $112, found 2 days agoJan
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Jan 2027$282Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)1 stopfound 6 days agoOpen this trip
22 Jan 2027$132Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
23 Jan 2027$172Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
27 Jan 2027$130Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
28 Jan 2027$130Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
29 Jan 2027$130Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
30 Jan 2027$132Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip
31 Jan 2027$112Bangkok AirwaysKoh Samui Airport (USM) → Chiang Mai International Airport (CNX)nonstopfound 2 days agoOpen this trip

Which month looks cheapest?

November 2026 is the cheapest month — from $90.

October 2026From $973 departure dates28 Oct · found yesterdayOpen this trip
November 2026From $90Cheapest seen1 departure date4 Nov · found 6 days agoOpen this trip
December 2026From $961 departure date9 Dec · found 6 days agoOpen this trip
January 2027From $1128 departure dates31 Jan 2027 · found 2 days agoOpen this trip
July 2027From $962 departure dates10 Jul 2027 · found 4 days agoOpen this trip

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