Flights to Koh Samui from Phuket

View ฿2,250 flight on Wed, 3 Sep 2025Opens in a new window

Popular airlines from Phuket to Koh Samui

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Cheap Flights from Phuket (HKT) to Koh Samui (USM)

Prices were available within the past 7 days and start at ฿2,250 for one-way flights and ฿4,670 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Thu, 11 Sep - Wed, 17 Sep
HKT
Phuket
USM
Koh Samui
฿4,670 Return, found 7 hours ago
฿4,670
Return
found 7 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Phuket to Koh Samui, returning Wed, 17 Sep, priced at ฿4,670 found 7 hours ago
Bangkok Airways
Thu, 11 Sep - Wed, 17 Sep
HKT
Phuket
USM
Koh Samui
฿5,565 Return, found 7 hours ago
฿5,565
Return
found 7 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Phuket to Koh Samui, returning Wed, 17 Sep, priced at ฿5,565 found 7 hours ago
Bangkok Airways
Thu, 11 Sep - Wed, 17 Sep
HKT
Phuket
USM
Koh Samui
฿5,815 Return, found 7 hours ago
฿5,815
Return
found 7 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Phuket to Koh Samui, returning Wed, 17 Sep, priced at ฿5,815 found 7 hours ago
Bangkok Airways
Mon, 1 Sep - Wed, 3 Sep
HKT
Phuket
USM
Koh Samui
฿6,065 Return, found 15 hours ago
฿6,065
Return
found 15 hours ago
Select Bangkok Airways flight, departing Mon, 1 Sep from Phuket to Koh Samui, returning Wed, 3 Sep, priced at ฿6,065 found 15 hours ago
Bangkok Airways
Fri, 5 Sep - Sun, 7 Sep
HKT
Phuket
USM
Koh Samui
฿6,365 Return, found 14 hours ago
฿6,365
Return
found 14 hours ago
Select Bangkok Airways flight, departing Fri, 5 Sep from Phuket to Koh Samui, returning Sun, 7 Sep, priced at ฿6,365 found 14 hours ago
Bangkok Airways
Thu, 11 Sep - Wed, 17 Sep
HKT
Phuket
USM
Koh Samui
฿6,460 Return, found 7 hours ago
฿6,460
Return
found 7 hours ago
Select Bangkok Airways flight, departing Thu, 11 Sep from Phuket to Koh Samui, returning Wed, 17 Sep, priced at ฿6,460 found 7 hours ago

Find the cheapest month to fly from Phuket (HKT) to Koh Samui (USM)

June is typically the cheapest month to fly

From ฿4,427 - ฿7,716 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.