Cheap flights from Koh Samui to Siem Reap from CA $404

View CA $404 flight on Sat, Nov. 22, 2025Opens in a new window

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Cheap flights from Koh Samui (USM) to Siem Reap (SAI)

Prices were available within the past 7 days and start at CA $404 for one-way flights and CA $798 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bangkok Airways
Tue, Jan. 27 - Sat, Jan. 31
USM
Koh Samui
SAI
Siem Reap
CA $798 Roundtrip, found 11 hours ago
CA $798
Roundtrip
found 11 hours ago
Select Bangkok Airways flight, departing Tue, Jan. 27 from Koh Samui to Siem Reap, returning Sat, Jan. 31, priced at CA $798 found 11 hours ago
Bangkok Airways
Tue, Jan. 27 - Tue, Feb. 3
USM
Koh Samui
SAI
Siem Reap
CA $804 Roundtrip, found 12 hours ago
CA $804
Roundtrip
found 12 hours ago
Select Bangkok Airways flight, departing Tue, Jan. 27 from Koh Samui to Siem Reap, returning Tue, Feb. 3, priced at CA $804 found 12 hours ago
Bangkok Airways
Mon, Feb. 2 - Fri, Feb. 6
USM
Koh Samui
SAI
Siem Reap
CA $928 Roundtrip, found 3 days ago
CA $928
Roundtrip
found 3 days ago
Select Bangkok Airways flight, departing Mon, Feb. 2 from Koh Samui to Siem Reap, returning Fri, Feb. 6, priced at CA $928 found 3 days ago
Bangkok Airways
Mon, Feb. 2 - Fri, Feb. 6
USM
Koh Samui
SAI
Siem Reap
CA $933 Roundtrip, found 3 days ago
CA $933
Roundtrip
found 3 days ago
Select Bangkok Airways flight, departing Mon, Feb. 2 from Koh Samui to Siem Reap, returning Fri, Feb. 6, priced at CA $933 found 3 days ago
Bangkok Airways
Tue, Nov. 4 - Wed, Nov. 5
USM
Koh Samui
SAI
Siem Reap
CA $1,072 Roundtrip, found 1 day ago
CA $1,072
Roundtrip
found 1 day ago
Select Bangkok Airways flight, departing Tue, Nov. 4 from Koh Samui to Siem Reap, returning Wed, Nov. 5, priced at CA $1,072 found 1 day ago
Bangkok Airways
Mon, Feb. 2 - Fri, Feb. 6
USM
Koh Samui
SAI
Siem Reap
CA $1,125 Roundtrip, found 3 days ago
CA $1,125
Roundtrip
found 3 days ago
Select Bangkok Airways flight, departing Mon, Feb. 2 from Koh Samui to Siem Reap, returning Fri, Feb. 6, priced at CA $1,125 found 3 days ago
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