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Cheap flights from Sydney to Ko Samui from $361

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Ko Samui departing on 15/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Sydney to Ko Samui (SYD-USM)

Cheap return flights

Scoot Logo
20:05 - 18:50SYD-USM
26h 45m1 stop
Scoot Logo
19:45 - 18:50USM-SYD
19h 05m1 stop
$671Scoot
Find Deal
Wed, 29 Oct - Fri, 14 Nov
Scoot Logo
20:45 - 18:30SYD-USM
24h 45m1 stop
Scoot Logo
19:25 - 11:35USM-SYD
13h 10m1 stop
$762Scoot
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Scoot Logo
12:50 - 16:45SYD-USM
30h 55m1 stop
Scoot Logo
19:25 - 11:35USM-SYD
13h 10m1 stop
$765Scoot
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Scoot Logo
12:50 - 07:50SYD-USM
22h 00m1 stop
Scoot Logo
19:40 - 11:15USM-SYD
12h 35m1 stop
$819Scoot
Find Deal
Thu, 11 Sep - Sun, 21 Sep
Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Logo
08:15 - 09:15USM-SYD
21h 00m2 stops
$820
Find Deal
Wed, 29 Oct - Fri, 14 Nov
Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Logo
08:15 - 09:15USM-SYD
21h 00m2 stops
$823
Find Deal
Thu, 30 Oct - Sat, 15 Nov
Scoot Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Scoot Logo
08:55 - 18:50USM-SYD
29h 55m1 stop
$892Scoot
Find Deal
Tue, 10 Feb - Tue, 17 Feb
Logo
15:10 - 07:20SYD-USM
43h 10m2 stops
Logo
08:45 - 19:30USM-SYD
31h 45m1 stop
$906
Find Deal
Thu, 11 Sep - Sun, 21 Sep
Scoot Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Scoot Logo
19:45 - 18:50USM-SYD
19h 05m1 stop
$921Scoot
Find Deal
Sun, 25 Jan - Sun, 1 Feb
Logo
12:50 - 16:45SYD-USM
30h 55m1 stop
Logo
12:30 - 11:35USM-SYD
20h 05m2 stops
$937
Find Deal
Tue, 9 Sep - Tue, 16 Sep

Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
29 Oct
SYD20:05Sydney Kingsford Smith
26h 45m
1 stop
USM18:50Ko Samui
14 Nov
USM19:45Ko Samui
19h 05m
1 stop
SYD18:50Sydney Kingsford Smith
$671
Find similar
Scoot
9 Sept
SYD20:45Sydney Kingsford Smith
24h 45m
1 stop
USM18:30Ko Samui
16 Sept
USM19:25Ko Samui
13h 10m
1 stop
SYD11:35Sydney Kingsford Smith
$762
Find similar
Scoot
9 Sept
SYD12:50Sydney Kingsford Smith
30h 55m
1 stop
USM16:45Ko Samui
16 Sept
USM19:25Ko Samui
13h 10m
1 stop
SYD11:35Sydney Kingsford Smith
$765
Find similar

Bangkok Airways flights from Sydney to Ko Samui

Our best Bangkok Airways deals on Sydney to Ko Samui flight tickets
Bangkok Airways
22 Aug
SYD09:50Sydney Kingsford Smith
24h 25m
1 stop
USM07:15Ko Samui
13 Sept
USM16:25Ko Samui
12h 50m
1 stop
SYD08:15Sydney Kingsford Smith
$1,494
Find similar
Bangkok Airways
22 Aug
SYD09:50Sydney Kingsford Smith
24h 25m
1 stop
USM07:15Ko Samui
13 Sept
USM19:15Ko Samui
32h 10m
1 stop
SYD06:25Sydney Kingsford Smith
$1,534
Find similar

momondo Fare Finder

 
Customise 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, momondo users made 78,305 searches. Data last updated 18 August 2025.
Use the filters below to find and compare flights from Sydney to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 29/10

20:05-18:50

1 stop26h 45m

Ko Samui

Fri 14/11

19:45-18:50

1 stop19h 05m

$671

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 9/9

20:45-18:30

1 stop24h 45m

Ko Samui

Tue 16/9

19:25-11:35

1 stop13h 10m

$762

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 9/9

12:50-16:45

1 stop30h 55m

Ko Samui

Tue 16/9

19:25-11:35

1 stop13h 10m

$765

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 11/9

12:50-07:50

1 stop22h 00m

Ko Samui

Sun 21/9

19:40-11:15

1 stop12h 35m

$819

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 29/10

20:05-08:00

1 stop15h 55m

Ko Samui

Fri 14/11

08:15-09:15

2 stops21h 00m

$820

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 30/10

20:05-08:00

1 stop15h 55m

Ko Samui

Sat 15/11

08:15-09:15

2 stops21h 00m

$823

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 10/2

20:05-08:00

1 stop15h 55m

Ko Samui

Tue 17/2

08:55-18:50

1 stop29h 55m

$892

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 11/9

15:10-07:20

2 stops43h 10m

Ko Samui

Sun 21/9

08:45-19:30

1 stop31h 45m

$906

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 25/1

20:05-08:00

1 stop15h 55m

Ko Samui

Sun 1/2

19:45-18:50

1 stop19h 05m

$921

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 9/9

12:50-16:45

1 stop30h 55m

Ko Samui

Tue 16/9

12:30-11:35

2 stops20h 05m

$937

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ko Samui from

How to get the cheapest flight ticket from Sydney to Ko Samui

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Sydney and Ko Samui?

What is the cheapest month to fly to Ko Samui?

The month of August is, on average, the cheapest month to fly to Ko Samui from Sydney, with most prices found around $868. If you aren’t able to travel during the month of August, then book flights to Ko Samui from Sydney during March instead. Flights to Ko Samui in March, while not as cheap as those in August, still average around $958.

What is the cheapest day to depart on your flight to Ko Samui?

According to our data, Tuesday is the cheapest day to fly to Ko Samui from Sydney. The lowest ticket price found for a Tuesday departure recently was $1,131. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Ko Samui for around $1,299.

What is the cheapest time of day to depart on your flight to Ko Samui?

Our data shows that the cheapest Sydney to Ko Samui flights are usually those with departure times in the evening. Our users have found flights to Ko Samui in the evening for as low as $952. Flights in the morning are often more expensive, with an average ticket price of $1,332.

How far in advance should I book a flight to Ko Samui?

You are more likely to see cheaper flights to Ko Samui from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around $1,121 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from Sydney for as low as $931 on momondo.

How have Sydney to Ko Samui flight prices changed over time?

As of August 2025, prices for Sydney to Ko Samui flights are approximately 51% cheaper when compared to flights at the same time last year.

When to book flights from Sydney to Ko Samui

Are you open to changing your travel dates? Check out the ideal times to fly from Sydney to Ko Samui according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Sydney to Ko Samui (SYD to USM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Sydney to Ko Samui

Best price found

$361

Fastest flight time

14h 05m

Direct flights

None

Airports in Ko Samui

1 airport
The best one-way flight to Ko Samui from Sydney in the past 72 hours is $361. The best return flight deal from Sydney to Ko Samui found on momondo in the last 72 hours is $671.
The fastest flight from Sydney to Ko Samui takes 14h 05m
There are no direct flights from Sydney to Ko Samui. Popular non-direct route for this connection is Sydney Kingsford Smith Airport - Ko Samui Airport.
There is 1 airport near Ko Samui: Ko Samui (USM)
Search flight deals

  • How far is Sydney Kingsford Smith to Ko Samui by plane?

    The distance between Sydney Kingsford Smith and Ko Samui is about 7231.6 km. By plane, this route typically takes 14h 05m.

  • When did momondo last update prices for flights from Sydney Kingsford Smith Airport to Ko Samui Airport?

    Prices for flights from Sydney Kingsford Smith Airport to Ko Samui Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Sydney Kingsford Smith Airport to Ko Samui Airport?

  • How old do you have to be to fly from Sydney Kingsford Smith Airport to Ko Samui Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Sydney Kingsford Smith Airport to Ko Samui Airport.

  • What documentation or ID do you need to fly to Ko Samui Airport?

    The necessary travel and health documents for your Ko Samui Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Sydney to Ko Samui?

Best airlines flying from Sydney to Ko Samui

Compare and see reviews for airlines that fly from Sydney to Ko Samui with momondo
Airline
Rating
Free cancellation
Price
ScootPriceFrom $642Free cancellationRating
6.7
308 reviews
Search Scoot flights
Singapore AirlinesPriceFrom $1,046Free cancellationRating
8.1
1,347 reviews
Search Singapore Airlines flights
Thai AirwaysPriceFrom $1,148Free cancellationRating
7.8
343 reviews
Search Thai Airways flights
Bangkok AirwaysPriceFrom $1,168Free cancellationRating
8.0
111 reviews
Search Bangkok Airways flights
Qantas AirwaysPriceFrom $1,535Free cancellationRating
7.5
896 reviews
Search Qantas Airways flights

Travelling to a place near Ko Samui?

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

Why use momondo?

Why should I use momondo to find a flight deal from Sydney to Ko Samui?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sydney to Ko Samui for you.

Can I find flights from Sydney to Ko Samui with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ko Samui from Sydney which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Sydney to Ko Samui?

momondo provides multiple filters to help you find the best flight to Ko Samui from Sydney. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Sydney to Ko Samui right now. Can momondo alert me if prices change?

Price alerts on flights to Ko Samui from Sydney are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ko Samui trip

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