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Ko Samui

$375+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — USM
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$479
(Mytrip)

One-way from

$375
(Scoot)

Popular in

December

Cheapest in

October

Average price

$700
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 ($134 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 10/292:20 pmSYD - USM
1 stop21h 40mMultiple Airlines
Wed 11/57:00 amUSM - SYD
3 stops31h 50mMultiple Airlines
Deal found 9/14$479
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Tue 10/288:05 pmSYD - USM
1 stop15h 55mMultiple Airlines
Tue 11/48:55 amUSM - SYD
2 stops19h 10mMultiple Airlines
Deal found 9/12$486
This Scoot deal was found by Cheapflights users on 9/13. 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 Scoot is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:05 pmSYD - USM
1 stop15h 55mScoot
Wed 11/58:55 amUSM - SYD
1 stop29h 55mScoot
Deal found 9/13$725
This Scoot deal was found by Cheapflights users on 9/14. 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 Scoot is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:05 pmSYD - USM
1 stop26h 45mScoot
Thu 11/68:55 amUSM - SYD
1 stop29h 55mScoot
Deal found 9/14$766
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Thu 10/1610:50 amSYD - USM
1 stop14h 45mQantas Airways
Thu 10/308:15 amUSM - SYD
1 stop19h 10mQantas Airways
Deal found 9/14$802
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Mon 10/2010:50 amSYD - USM
1 stop13h 40mQantas Airways
Mon 11/31:25 pmUSM - SYD
1 stop14h 00mQantas Airways
Deal found 9/14$808
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Thu 10/911:20 amSYD - USM
1 stop13h 50mQantas Airways
Thu 10/308:15 amUSM - SYD
1 stop19h 10mQantas Airways
Deal found 9/14$811
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Thu 10/911:20 amSYD - USM
1 stop13h 50mQantas Airways
Mon 11/31:25 pmUSM - SYD
1 stop14h 00mQantas Airways
Deal found 9/14$818
This Qantas Airways deal was found by Cheapflights users on 9/14. 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.
Thu 10/1610:50 amSYD - USM
1 stop14h 00mQantas Airways
Sat 11/88:15 amUSM - SYD
1 stop19h 10mQantas Airways
Deal found 9/14$828

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 September 15, 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

Tue 10/28

8:05 pm-8:00 am

1 stop15h 55m

Ko Samui

Tue 11/4

8:55 am-8:05 am

2 stops19h 10m

$486

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 10/29

8:05 pm-8:00 am

1 stop15h 55m

Ko Samui

Wed 11/5

8:55 am-6:50 pm

1 stop29h 55m

$725

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 10/30

8:05 pm-6:50 pm

1 stop26h 45m

Ko Samui

Thu 11/6

8:55 am-6:50 pm

1 stop29h 55m

$766

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 10/16

10:50 am-8:50 pm

1 stop14h 00m

Ko Samui

Tue 10/28

8:15 am-7:25 am

1 stop19h 10m

$802

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 10/16

10:50 am-9:35 pm

1 stop14h 45m

Ko Samui

Thu 10/30

8:15 am-7:25 am

1 stop19h 10m

$802

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 10/13

10:50 am-8:50 pm

1 stop14h 00m

Ko Samui

Thu 10/30

8:15 am-7:25 am

1 stop19h 10m

$802

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 10/15

10:50 am-9:35 pm

1 stop14h 45m

Ko Samui

Thu 10/30

8:15 am-7:25 am

1 stop19h 10m

$802

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 10/8

3:50 pm-1:10 pm

1 stop25h 20m

Ko Samui

Thu 10/30

8:15 am-7:25 am

1 stop19h 10m

$811

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 10/8

3:50 pm-1:10 pm

1 stop25h 20m

Ko Samui

Sat 11/1

8:15 am-7:25 am

1 stop19h 10m

$838

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 10/11

3:50 pm-9:10 pm

1 stop33h 20m

Ko Samui

Thu 10/30

8:15 am-7:25 am

1 stop19h 10m

$838

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
2

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 September 12, 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 September 15, 2025.
Get a feel of what it's like to fly with Singapore Airlines and Scoot 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
1,365 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.7

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
1,365 reviews
Singapore Airlines
8.1
Very good
1,365 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.7

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
1,365 reviews

Entertainment

8.0

Crew

8.6

Boarding

8.2

Comfort

8.0

Overall

8.1

Food

7.7

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.

  • How long is the flight from Sydney to Ko Samui?

    For as low as $802, Scoot can have you in Ko Samui from Sydney in 14h. Airlines will cover a distance of 4495 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $494 on this airline. An additional option worth looking into is Singapore Airlines, starting at $723. Scoot is currently priced 31% 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

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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 Chiang Mai flights
Sydney to Phuket City flights

Top 2 airlines flying from Sydney to Ko Samui

Discover the top 2 airlines 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapest$494Average$688FlexibilityNo cancel feeOn-timeN/A
Singapore AirlinesCheapest$723Average$819FlexibilityNo cancel feeOn-time81%

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