Flights to Koh Samui from Chiang Mai

View ฿4,045 flight on Thu, 25 Jun 2026Opens in a new window

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

Prices were available within the past 7 days and start at ฿4,045 for one-way flights and ฿8,260 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Thu, 11 Sep - Sun, 14 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,260 Return, found 6 hours ago
฿8,260
Return
found 6 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Chiang Mai to Koh Samui, returning Sun, 14 Sep, priced at ฿8,260 found 6 hours ago
Bangkok Airways
Wed, 24 Sep - Sat, 27 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,420 Return, found 2 hours ago
฿8,420
Return
found 2 hours ago
Select Bangkok Airways flight, departing Wed, 24 Sep from Chiang Mai to Koh Samui, returning Sat, 27 Sep, priced at ฿8,420 found 2 hours ago
Bangkok Airways
Mon, 22 Sep - Sun, 28 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,425 Return, found 7 hours ago
฿8,425
Return
found 7 hours ago
Select Bangkok Airways flight, departing Mon, 22 Sep from Chiang Mai to Koh Samui, returning Sun, 28 Sep, priced at ฿8,425 found 7 hours ago
Bangkok Airways
Wed, 24 Sep - Sat, 27 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,550 Return, found 2 hours ago
฿8,550
Return
found 2 hours ago
Select Bangkok Airways flight, departing Wed, 24 Sep from Chiang Mai to Koh Samui, returning Sat, 27 Sep, priced at ฿8,550 found 2 hours ago
Bangkok Airways
Thu, 11 Sep - Sun, 14 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,555 Return, found 6 hours ago
฿8,555
Return
found 6 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Chiang Mai to Koh Samui, returning Sun, 14 Sep, priced at ฿8,555 found 6 hours ago
Bangkok Airways
Wed, 10 Sep - Wed, 17 Sep
CNX
Chiang Mai
USM
Koh Samui
฿8,590 Return, found 3 days ago
฿8,590
Return
found 3 days ago
Select Bangkok Airways flight, departing Wed, 10 Sep from Chiang Mai to Koh Samui, returning Wed, 17 Sep, priced at ฿8,590 found 3 days ago

Find the cheapest month to fly from Chiang Mai (CNX) to Koh Samui (USM)

September is typically the cheapest month to fly

From ฿5,924 - ฿13,723 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.