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Ko Samui

$310+ Cheap flights from Sydney (SYD) to Ko Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Sydney to Ko Samui

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 31, 2025.

Round-trip from

$536
(Mytrip)

One-way from

$310
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$693
From Sydney Kingsford Smith to Ko Samui
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One-way flight from Sydney Kingsford Smith to Ko Samui
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Highest demand for flights based on searches. 15% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Sydney to Ko Samui

Cheapest flights from Sydney to Ko Samui
Explore the most affordable flight options available from Sydney to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Mytrip deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:45 pmSYD - USM
1 stop24h 45mMultiple Airlines
Tue 9/167:00 amUSM - SYD
2 stops25h 35mMultiple Airlines
Deal found 7/31$536
This Booking.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/159:45 pmSYD - USM
1 stop25h 05mScoot
Mon 12/158:55 amUSM - SYD
1 stop24h 10mScoot
Deal found 7/29$558
This British Airways deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:20 pmSYD - USM
1 stop29h 55mBritish Airways
Wed 12/311:25 pmUSM - SYD
1 stop13h 30mBritish Airways
Deal found 7/30$1,227
This Singapore Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:55 amSYD - USM
1 stop13h 35mSingapore Airlines
Fri 8/227:25 pmUSM - SYD
1 stop12h 00mSingapore Airlines
Deal found 7/31$1,285
This Qantas Airways deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/82:50 pmSYD - USM
1 stop25h 20mQantas Airways
Sat 8/168:20 amUSM - SYD
1 stop19h 20mQantas Airways
Deal found 7/31$1,329
This Cathay Pacific deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/810:10 amSYD - USM
1 stop35h 25mCathay Pacific
Tue 8/1910:55 amUSM - SYD
1 stop18h 45mCathay Pacific
Deal found 7/31$1,354

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sydney to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
Use the filters below to find and compare flights from Sydney to Ko Samui that are best for you.

Fly from

Sydney

Fly to

Ko Samui

Route

Depart

Return

Price

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 9/8

8:45 pm-6:30 pm

1 stop24h 45m

Ko Samui

Tue 9/16

7:00 am-11:35 am

2 stops25h 35m

$536

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 11/15

9:45 pm-6:50 pm

1 stop25h 05m

Ko Samui

Mon 12/15

8:55 am-1:05 pm

1 stop24h 10m

$558

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 12/25

4:20 pm-6:15 pm

1 stop29h 55m

Ko Samui

Tue 12/30

1:25 pm-6:55 am

1 stop13h 30m

$1,227

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 8/13

7:55 am-6:30 pm

1 stop13h 35m

Ko Samui

Fri 8/22

7:25 pm-10:25 am

1 stop12h 00m

$1,285

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 8/14

2:05 pm-6:35 pm

1 stop31h 30m

Ko Samui

Tue 8/19

10:55 am-6:10 am

1 stop16h 15m

$1,378

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 8/12

2:50 pm-9:10 pm

1 stop33h 20m

Ko Samui

Sat 8/16

8:20 am-6:40 am

1 stop19h 20m

$1,394

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 8/6

12:50 pm-7:50 am

1 stop22h 00m

$310

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 1/9

8:10 am-7:10 am

2 stops27h 00m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Sydney to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Sydney with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Ko Samui

How far ahead should I book a flight from Sydney to Ko Samui?

Use this chart to determine the optimal time to book a round-trip flight from Sydney to Ko Samui. Price data was last updated on July 25, 2025.

The price you pay for your flight from Sydney to Ko Samui may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with Singapore Airlines, Cathay Pacific, and Qantas Airways from Sydney to Ko Samui by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.1
Very good
1,338 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Cathay Pacific
7.6
Good
949 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Qantas Airways
7.5
Good
887 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Scoot
6.7
Okay
308 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
British Airways
6.7
Okay
7,221 reviews
Singapore Airlines
8.1
Very good
1,338 reviews

Crew

8.6

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

Related info for your journey

Find useful and relevant information for your journey from Sydney to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Sydney to Ko Samui round-trip?

    Our cheapest airline available from Sydney to Ko Samui is Scoot. Our recent data shows that you can find tickets from as low as $558 on this airline. Additional options worth looking into are British Airways and Singapore Airlines, starting at $1,227 and $1,285 round-trip. Scoot is currently priced 24% below the average price you’ll pay for this route.

  • Can I find deals for flights from Sydney to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Sydney to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sydney to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Ko Samui.

  • Can I find deals for business class flights from Sydney to Ko Samui?

    Yes. Cheapflights offers flight deals from Sydney to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Ko Pha Ngan

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Sydney to Suvarnabhumi flights
Sydney to Phuket City flights
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Top airline flying from Sydney to Ko Samui

Discover the top airline that operate flights from Sydney to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$494Average$683FlexibilityNo cancel feeOn-timeN/A

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