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Cheap flights from Sydney to Ko Samui from $363

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 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sydney to Ko Samui

Cheap return flights

Enter your travel dates to find the best prices.
Scoot Logo
20:05 - 18:50
SYD
-
USM
26h 45m
1 stop
Scoot Logo
08:55 - 12:10
USM
-
SYD
23h 15m
1 stop
$647Scoot
Tue, 10 Nov - Tue, 17 Nov
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:55 - 12:10
USM
-
SYD
23h 15m
1 stop
$649Scoot
Wed, 14 Oct - Wed, 28 Oct
Multiple Airlines Logo
09:45 - 08:25
SYD
-
USM
25h 40m
2 stops
Multiple Airlines Logo
08:00 - 08:20
USM
-
SYD
21h 20m
2 stops
$844Multiple Airlines
Fri, 11 Sep - Sat, 19 Sep
Multiple Airlines Logo
20:35 - 18:00
SYD
-
USM
24h 25m
2 stops
Multiple Airlines Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$872Multiple Airlines
Fri, 11 Sep - Mon, 21 Sep
Qantas Airways Logo
10:25 - 20:25
SYD
-
USM
14h 00m
1 stop
Qantas Airways Logo
14:05 - 07:35
USM
-
SYD
13h 30m
1 stop
$1,273Qantas Airways
Mon, 2 Nov - Tue, 3 Nov
Qantas Airways Logo
10:25 - 19:50
SYD
-
USM
13h 25m
1 stop
Qantas Airways Logo
13:25 - 06:35
USM
-
SYD
13h 10m
1 stop
$1,374Qantas Airways
Fri, 30 Oct - Sat, 31 Oct
Singapore Airlines Logo
08:05 - 17:10
SYD
-
USM
13h 05m
1 stop
Singapore Airlines Logo
19:45 - 11:50
USM
-
SYD
12h 05m
1 stop
$1,871Singapore Airlines
Sun, 1 Nov - Sun, 1 Nov
Singapore Airlines Logo
08:05 - 17:10
SYD
-
USM
13h 05m
1 stop
Singapore Airlines Logo
19:45 - 11:50
USM
-
SYD
12h 05m
1 stop
$1,945Singapore Airlines
Sat, 31 Oct - Sat, 31 Oct
Thai Airways Logo
10:00 - 15:35
SYD
-
USM
33h 35m
1 stop
Thai Airways Logo
14:05 - 11:55
USM
-
SYD
17h 50m
1 stop
$2,128Thai Airways
Mon, 21 Dec - Sat, 2 Jan
Thai Airways Logo
10:00 - 15:35
SYD
-
USM
33h 35m
1 stop
Thai Airways Logo
14:05 - 11:55
USM
-
SYD
17h 50m
1 stop
$2,134Thai Airways
Mon, 21 Dec - Sat, 2 Jan

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Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
10 Nov
SYD20:05Sydney Kingsford Smith
26h 45m
1 stop
USM18:50Ko Samui
17 Nov
USM08:55Ko Samui
23h 15m
1 stop
SYD12:10Sydney Kingsford Smith
$647
Scoot
13 Oct
SYD21:35Sydney Kingsford Smith
25h 15m
1 stop
USM18:50Ko Samui
28 Oct
USM19:45Ko Samui
12h 25m
1 stop
SYD12:10Sydney Kingsford Smith
$649
Scoot
30 Oct
SYD20:05Sydney Kingsford Smith
26h 45m
1 stop
USM18:50Ko Samui
3 Nov
USM18:05Ko Samui
14h 05m
1 stop
SYD12:10Sydney Kingsford Smith
$707

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 1 August 2026.
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

Cheapest return flight

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 10/11

20:05-18:50

1 stop26h 45m

Ko Samui

Tue 17/11

08:55-12:10

1 stop23h 15m

$647

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 14/10

21:35-18:50

1 stop25h 15m

Ko Samui

Wed 28/10

08:55-12:10

1 stop23h 15m

$649

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 11/9

09:45-08:25

2 stops25h 40m

Ko Samui

Sat 19/9

08:00-08:20

2 stops21h 20m

$844

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 11/9

20:35-18:00

2 stops24h 25m

Ko Samui

Mon 21/9

08:40-11:45

1 stop24h 05m

$872

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 2/11

10:25-20:25

1 stop14h 00m

Ko Samui

Tue 3/11

14:05-07:35

1 stop13h 30m

$1,273

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Fri 30/10

10:25-19:50

1 stop13h 25m

Ko Samui

Sat 31/10

13:25-06:35

1 stop13h 10m

$1,374
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 1/11

08:05-17:10

1 stop13h 05m

Ko Samui

Sun 1/11

19:45-11:50

1 stop12h 05m

$1,871

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 31/10

08:05-17:10

1 stop13h 05m

Ko Samui

Sat 31/10

19:45-11:50

1 stop12h 05m

$1,945

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 21/12

10:00-15:35

1 stop33h 35m

Ko Samui

Sat 2/1

14:05-11:55

1 stop17h 50m

$2,128

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 21/12

10:00-15:35

1 stop33h 35m

Ko Samui

Sat 2/1

14:05-11:55

1 stop17h 50m

$2,134

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Prices are currently low for flights on this route.

Typical prices usually range from $953 to $1,169.
The lowest price recently found on this route was $647.

What is the cheapest month to fly to Ko Samui?

The month of March is, on average, the cheapest month to fly to Ko Samui from Sydney, with most prices found around $837. If you aren’t able to travel during the month of March, then book flights to Ko Samui from Sydney during November instead. Flights to Ko Samui in November, while not as cheap as those in March, still average around $1,004.

How far in advance should I book a flight from Sydney 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 $1,145 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 $979 on momondo.

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

As of August 2026, prices for Sydney to Ko Samui flights are approximately 13% more expensive 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

Fastest flight time

14h 10m

Direct flights

None
The fastest flight from Sydney to Ko Samui takes 14h 10m
There are no direct flights from Sydney to Ko Samui. There are no popular flight routes from Sydney to Ko Samui.
Search flight deals

Frequently asked questions about flying from Sydney to Ko Samui

  • 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 10m.

  • 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 $668Free cancellationRating
6.7
328 reviews
Search Scoot flights
Qantas AirwaysPriceFrom $990Free cancellationRating
7.5
1,073 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,119Free cancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights
Bangkok AirwaysPriceFrom $1,213Free cancellationRating
8.1
133 reviews
Search Bangkok Airways flights
Thai AirwaysPriceFrom $1,250Free cancellationRating
7.9
412 reviews
Search Thai 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.

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