Flights to Koh Samui from Chiang Mai - ￥14,480

View ￥14,480 flight on Wed, Sep 10, 2025Opens in a new window

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

Prices were available within the past 7 days and start at ￥14,480 for one-way flights and ￥63,984 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Tue, Nov 11 - Thu, Nov 13
CNX
Chiang Mai
USM
Koh Samui
￥63,984 Roundtrip, found 1 hour ago
￥63,984
Roundtrip
found 1 hour ago
Select Bangkok Airways flight, departing Tue, Nov 11 from Chiang Mai to Koh Samui, returning Thu, Nov 13, priced at ￥63,984 found 1 hour ago
Bangkok Airways
Tue, Nov 11 - Thu, Nov 13
CNX
Chiang Mai
USM
Koh Samui
￥64,581 Roundtrip, found 1 hour ago
￥64,581
Roundtrip
found 1 hour ago
Select Bangkok Airways flight, departing Tue, Nov 11 from Chiang Mai to Koh Samui, returning Thu, Nov 13, priced at ￥64,581 found 1 hour ago
Bangkok Airways
Tue, Jul 15 - Sat, Jul 26
CNX
Chiang Mai
USM
Koh Samui
￥64,920 Roundtrip, found 17 hours ago
￥64,920
Roundtrip
found 17 hours ago
Select Bangkok Airways flight, departing Tue, Jul 15 from Chiang Mai to Koh Samui, returning Sat, Jul 26, priced at ￥64,920 found 17 hours ago
Bangkok Airways
Tue, Nov 11 - Thu, Nov 13
CNX
Chiang Mai
USM
Koh Samui
￥65,426 Roundtrip, found 1 hour ago
￥65,426
Roundtrip
found 1 hour ago
Select Bangkok Airways flight, departing Tue, Nov 11 from Chiang Mai to Koh Samui, returning Thu, Nov 13, priced at ￥65,426 found 1 hour ago
Bangkok Airways
Tue, Jul 15 - Sat, Jul 26
CNX
Chiang Mai
USM
Koh Samui
￥65,500 Roundtrip, found 17 hours ago
￥65,500
Roundtrip
found 17 hours ago
Select Bangkok Airways flight, departing Tue, Jul 15 from Chiang Mai to Koh Samui, returning Sat, Jul 26, priced at ￥65,500 found 17 hours ago
Thai Vietjet
Mon, Sep 1 - Tue, Sep 16
CNX
Chiang Mai
USM
Koh Samui
￥71,720 Roundtrip, found 7 hours ago
￥71,720
Roundtrip
found 7 hours ago
Select Thai Vietjet flight, departing Mon, Sep 1 from Chiang Mai to Koh Samui, returning Tue, Sep 16, priced at ￥71,720 found 7 hours ago

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

September is typically the cheapest month to fly

From ￥25,549 - ￥60,083 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.