Cheap flights from Perth to Koh Samui Islands

View NZ$275 flight on Wed, 15 Oct. 2025Opens in a new window

Popular airlines from Perth to Koh Samui Islands

  • Qantas Airways

    Qantas Airways

  • Singapore Airlines

    Singapore Airlines

  • Scoot

    Scoot

  • Thai Airways International

    Thai Airways International

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Perth (PER) 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.

Scoot
Tue, 14 Oct. - Fri, 31 Oct.
PER
Perth
USM
Koh Samui
NZ$509 Return, found 8 hours ago
NZ$509
Return
found 8 hours ago
Select Scoot flight, departing Tue, 14 Oct. from Perth to Koh Samui, returning Fri, 31 Oct., priced at NZ$509 found 8 hours ago
Scoot
Tue, 14 Oct. - Fri, 31 Oct.
PER
Perth
USM
Koh Samui
NZ$533 Return, found 8 hours ago
NZ$533
Return
found 8 hours ago
Select Scoot flight, departing Tue, 14 Oct. from Perth to Koh Samui, returning Fri, 31 Oct., priced at NZ$533 found 8 hours ago
Singapore Airlines
Thu, 16 Oct. - Thu, 30 Oct.
PER
Perth
USM
Koh Samui
NZ$1,129 Return, found 1 day ago
NZ$1,129
Return
found 1 day ago
Select Singapore Airlines flight, departing Thu, 16 Oct. from Perth to Koh Samui, returning Thu, 30 Oct., priced at NZ$1,129 found 1 day ago
Qantas Airways
Mon, 21 Jul. - Tue, 5 Aug.
PER
Perth
USM
Koh Samui
NZ$1,375 Return, found 3 days ago
NZ$1,375
Return
found 3 days ago
Select Qantas Airways flight, departing Mon, 21 Jul. from Perth to Koh Samui, returning Tue, 5 Aug., priced at NZ$1,375 found 3 days ago
Thai Airways International
Wed, 20 May - Wed, 27 May
PER
Perth
USM
Koh Samui
NZ$1,413 Return, found 20 hours ago
NZ$1,413
Return
found 20 hours ago
Select Thai Airways International flight, departing Wed, 20 May from Perth to Koh Samui, returning Wed, 27 May, priced at NZ$1,413 found 20 hours ago
Cathay Pacific
Mon, 21 Jul. - Tue, 5 Aug.
PER
Perth
USM
Koh Samui
NZ$2,232 Return, found 3 days ago
NZ$2,232
Return
found 3 days ago
Select Cathay Pacific flight, departing Mon, 21 Jul. from Perth to Koh Samui, returning Tue, 5 Aug., priced at NZ$2,232 found 3 days ago
*Available to Expedia members.