Cheap flights from Bangkok to Koh Samui Islands

View AU$220 flight on Tue, 2 Sep. 2025Opens in a new window

Popular airlines from Bangkok to Koh Samui Islands

  • Bangkok Airways

    Bangkok Airways

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Cheap Flights from Bangkok (BKK) to Koh Samui Islands (USM)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Wed, 10 Sep. - Sat, 20 Sep.
BKK
Bangkok
USM
Koh Samui
AU$444 Return, found 4 days ago
AU$444
Return
found 4 days ago
Select Bangkok Airways flight, departing Wed, 10 Sep. from Bangkok to Koh Samui, returning Sat, 20 Sep., priced at AU$444 found 4 days ago
Bangkok Airways
Thu, 19 Mar. - Thu, 26 Mar.
BKK
Bangkok
USM
Koh Samui
AU$446 Return, found 1 hour ago
AU$446
Return
found 1 hour ago
Select Bangkok Airways flight, departing Thu, 19 Mar. from Bangkok to Koh Samui, returning Thu, 26 Mar., priced at AU$446 found 1 hour ago
Bangkok Airways
Sun, 11 Jan. - Thu, 15 Jan.
BKK
Bangkok
USM
Koh Samui
AU$455 Return, found 6 days ago
AU$455
Return
found 6 days ago
Select Bangkok Airways flight, departing Sun, 11 Jan. from Bangkok to Koh Samui, returning Thu, 15 Jan., priced at AU$455 found 6 days ago
Bangkok Airways
Fri, 5 Sep. - Sat, 20 Sep.
BKK
Bangkok
USM
Koh Samui
AU$457 Return, found 4 days ago
AU$457
Return
found 4 days ago
Select Bangkok Airways flight, departing Fri, 5 Sep. from Bangkok to Koh Samui, returning Sat, 20 Sep., priced at AU$457 found 4 days ago
Bangkok Airways
Wed, 13 May - Sat, 16 May
BKK
Bangkok
USM
Koh Samui
AU$458 Return, found 3 days ago
AU$458
Return
found 3 days ago
Select Bangkok Airways flight, departing Wed, 13 May from Bangkok to Koh Samui, returning Sat, 16 May, priced at AU$458 found 3 days ago
Bangkok Airways
Tue, 7 Oct. - Thu, 9 Oct.
BKK
Bangkok
USM
Koh Samui
AU$459 Return, just found
AU$459
Return
just found
Select Bangkok Airways flight, departing Tue, 7 Oct. from Bangkok to Koh Samui, returning Thu, 9 Oct., priced at AU$459 just found

Find the cheapest month to fly from Bangkok (BKK) to Koh Samui (USM)

September is typically the cheapest month to fly

From AU$279 - AU$420 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.