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prices we've seen · United States fares · USD

Flights from Koh Samui (USM) to Chiang Mai (CNX)

  • One way from $81
  • Round trip from $284
  • Nonstop on 22 of 22 dates
  • Fastest 1h 50m
  • 1 airline

The cheapest one-way fare from Koh Samui to Chiang Mai we have seen is $81 USD, departing Nov 2 (seen Oct 25): Bangkok Airways PG 104, 1 stop, 11h 25m.

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Cheapest · One wayseen Oct 25

$81 USD

Bangkok Airways PG 104 · Nov 2 · 1 stop · 11h 25m

A typical day on this route: $131

Continue on the seller's site — $81

Cheapest round tripseen Oct 23

$284 USD

Bangkok Airways PG 241 · Nov 10 → Nov 24 · 1 stop · 15h 50m in all, both ways

Continue on the seller's site — $284

a2bflight may earn a commission from the seller if you book after this click; the price you see is the seller's and does not change. How we rank, what we keep.

These are the fares the seller shows on its United States site, in USD; prices where you live may differ.

See more dates →

Prices are the fare alone; the seller shows the bag and fare rules.

Cheapest by month

Checked Oct 26

Pick a month to search the day its cheapest fare leaves.

  1. Nov 2026$81
  2. Dec 2026$127
  3. Jan 2027$163
  4. Feb 2027—
  5. Mar 2027$95
  6. Apr 2027—
  7. May 2027—
  8. Jun 2027$96

Cheapest days to fly one wayCheapest round trips

Each day's cheapest fare we've seen, nonstop and with stops. Cheapest first.

We may earn a commission from the seller · How we rank

  1. MonNov 2

    07:55

    11h 25m1 stop

    19:20

    Cheapest$81 USD

    Bangkok Airways PG 104 · seen Oct 25

    Go to seller — $81

  2. WedNov 4

    08:50

    1h 50mNonstop

    10:40

    $112 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $112

  3. ThuNov 5

    08:50

    1h 50mNonstop

    10:40

    $123 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $123

  4. MonNov 2

    08:50

    1h 50mNonstop

    10:40

    $125 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $125

  5. MonNov 16

    08:50

    1h 50mNonstop

    10:40

    $127 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $127

  6. ThuDec 3

    08:50

    1h 50mNonstop

    10:40

    $127 USD

    Bangkok Airways PG 241 · seen Oct 21

    Go to seller — $127

  7. FriNov 13

    08:50

    1h 50mNonstop

    10:40

    $128 USD

    Bangkok Airways PG 241 · seen Oct 22

    Go to seller — $128

  8. SunNov 15

    08:50

    1h 50mNonstop

    10:40

    $129 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $129

  9. TueNov 17

    08:50

    1h 50mNonstop

    10:40

    $129 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $129

  10. ThuNov 19

    08:50

    1h 50mNonstop

    10:40

    $129 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $129
Show 18 more fares

  1. WedNov 18

    08:50

    1h 50mNonstop

    10:40

    $130 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $130

  2. TueNov 10

    08:50

    1h 50mNonstop

    10:40

    $131 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $131

  3. WedNov 11

    08:50

    1h 50mNonstop

    10:40

    $131 USD

    Bangkok Airways PG 241 · seen Oct 24

    Go to seller — $131

  4. MonNov 30

    07:00

    15h 5m1 stop

    22:05

    $143 USD

    Bangkok Airways PG 102 · seen Oct 24

    Go to seller — $143

  5. MonNov 30

    08:50

    1h 50mNonstop

    10:40

    $147 USD

    Bangkok Airways PG 241 · seen Oct 24

    Go to seller — $147

  6. MonDec 21

    08:50

    1h 50mNonstop

    10:40

    $148 USD

    Bangkok Airways PG 241 · seen Oct 21

    Go to seller — $148

  7. TueNov 24

    15:35

    18h 50m1 stop

    10:25+1

    $157 USD

    Bangkok Airways PG 4906 · seen Oct 20

    Go to seller — $157

  8. SunDec 6

    08:50

    1h 50mNonstop

    10:40

    $160 USD

    Bangkok Airways PG 241 · seen Oct 22

    Go to seller — $160

  9. TueDec 8

    08:50

    1h 50mNonstop

    10:40

    $167 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $167

  10. SatDec 12

    08:50

    1h 50mNonstop

    10:40

    $170 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $170

  11. ThuDec 31

    08:50

    1h 50mNonstop

    10:40

    $189 USD

    Bangkok Airways PG 241 · seen Oct 20

    Go to seller — $189

  12. SunDec 27

    11:35

    10h1 stop

    21:35

    $202 USD

    Bangkok Airways PG 1190 · seen Oct 25

    Go to seller — $202

  13. SatNov 21

    06:45

    14h 50m1 stop

    21:35

    $205 USD

    Bangkok Airways PG 450 · seen Oct 24

    Go to seller — $205

  14. MonNov 23

    11:10

    3h 45m1 stop

    14:55

    $218 USD

    Bangkok Airways PG 293 · seen Oct 20

    Go to seller — $218

  15. TueNov 24

    07:55

    1h 50mNonstop

    09:45

    $296 USD

    Bangkok Airways PG 241 · seen Oct 20

    Go to seller — $296

  16. SatNov 21

    08:50

    1h 50mNonstop

    10:40

    $302 USD

    Bangkok Airways PG 241 · seen Oct 24

    Go to seller — $302

  17. SunDec 27

    08:50

    1h 50mNonstop

    10:40

    $302 USD

    Bangkok Airways PG 241 · seen Oct 25

    Go to seller — $302

  18. MonNov 23

    08:50

    1h 50mNonstop

    10:40

    $736 USD

    Bangkok Airways PG 241 · seen Oct 20

    Go to seller — $736

The cheapest round trips we've seen on this route, on any dates, cheapest first.

We may earn a commission from the seller · How we rank

  1. 2 nightsAug 9–11

    07:50

    CNX

    Cheapest$279 USD

    Bangkok Airways PG 102 · 2 stops · 19h in all, both ways · seen Oct 21

    Go to seller — $279

  2. 14 nightsNov 10–24

    08:50

    10:40

    $284 USD

    Bangkok Airways PG 241 · 1 stop · 15h 50m in all, both ways · seen Oct 23

    Go to seller — $284

  3. 2 nightsFeb 14–16

    08:50

    10:40

    $301 USD

    Bangkok Airways PG 241 · 1 stop · 19h 50m in all, both ways · seen Oct 21

    Go to seller — $301

  4. 3 nightsAug 9–12

    07:50

    CNX

    $313 USD

    Bangkok Airways PG 102 · 2 stops · 22h 30m in all, both ways · seen Oct 21

    Go to seller — $313

  5. 8 nightsNov 21–29

    06:45

    CNX

    $410 USD

    Bangkok Airways PG 450 · 3 stops · 22h 45m in all, both ways · seen Oct 25

    Go to seller — $410

  6. 10 nightsDec 29 – Jan 8

    08:50

    10:40

    $413 USD

    Bangkok Airways PG 241 · 1 stop · 13h 50m in all, both ways · seen Oct 23

    Go to seller — $413

  7. 2 nightsAug 9–11

    08:55

    10:40

    $466 USD

    Bangkok Airways PG 241 · Nonstop · 3h 30m in all, both ways · seen Oct 21

    Go to seller — $466

  8. 3 nightsAug 9–12

    08:55

    10:40

    $466 USD

    Bangkok Airways PG 241 · Nonstop · 3h 30m in all, both ways · seen Oct 21

    Go to seller — $466

  9. 8 nightsNov 21–29

    08:50

    10:40

    $587 USD

    Bangkok Airways PG 241 · Nonstop · 3h 35m in all, both ways · seen Oct 25

    Go to seller — $587

Compare other routes

Compared with Koh Samui → Chiang Mai: $81 one way (Nov 2).

Other places from Koh Samui

Every route from Koh Samui →

To Chiang Mai from other cities

Every route to Chiang Mai →

Airlines seen on this route

  • Bangkok Airways

Marketing carriers; the operating airline is shown by the seller.

Koh Samui to Chiang Mai in numbers

  • By month, Nov 2026 is the cheapest we've seen at $81 USD and Jan 2027 the most expensive at $163 USD — a spread of 101%.
  • Nonstop fares were seen on 22 of the 22 departure dates; carriers seen: Bangkok Airways.
  • USM serves Koh Samui, Thailand; CNX serves Chiang Mai, Thailand.
  • Koh Samui and Chiang Mai keep the same clock.

Questions

What is the cheapest fare from Koh Samui to Chiang Mai?

The cheapest one-way fare from Koh Samui to Chiang Mai we have seen is $81 USD, departing Nov 2 (seen Oct 25): Bangkok Airways PG 104, 1 stop, 11h 25m.

Is there a nonstop flight from Koh Samui to Chiang Mai?

Nonstop fares were seen on 22 of the 22 departure dates; carriers seen: Bangkok Airways.

Which month is cheapest to fly from Koh Samui to Chiang Mai?

By month, Nov 2026 is the cheapest we've seen at $81 USD and Jan 2027 the most expensive at $163 USD — a spread of 101%.

How old is this price?

It is the cheapest fare we've seen for that date; the date beside it is the day it was seen, or our last check. We look again at least once a day for the routes people search, and stop showing a route's prices two days after our last look. The seller's page shows the price right now.

How does a2bflight rank results?

By price and duration only; commission never enters the order. Cheapest means cheapest among the fares we've seen for this route. A click that books may earn a2bflight a commission from the seller; the price you see is the seller's own. See how we rank and what we keep.