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Cheap flights from Sydney to Ko Samui from $451

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 21/7. 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
13:25 - 18:50
SYD
-
USM
33h 25m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$636Scoot
Sat, 7 Nov - Sat, 14 Nov
Scoot Logo
20:05 - 17:10
SYD
-
USM
25h 05m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$745Scoot
Mon, 9 Nov - Sat, 14 Nov
Scoot Logo
14:00 - 18:50
SYD
-
USM
32h 50m
1 stop
Scoot Logo
08:55 - 12:10
USM
-
SYD
23h 15m
1 stop
$770Scoot
Tue, 13 Oct - Wed, 28 Oct
Multiple Airlines Logo
20:35 - 20:25
SYD
-
USM
26h 50m
2 stops
Multiple Airlines Logo
09:15 - 19:20
USM
-
SYD
31h 05m
2 stops
$790Multiple Airlines
Sat, 12 Sep - Thu, 17 Sep
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
19:45 - 12:10
USM
-
SYD
12h 25m
1 stop
$795Scoot
Wed, 14 Oct - Thu, 29 Oct
Scoot Logo
20:05 - 18:50
SYD
-
USM
26h 45m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$812Scoot
Sun, 25 Oct - Sat, 31 Oct
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
18:05 - 18:50
USM
-
SYD
20h 45m
1 stop
$813Scoot
Tue, 13 Oct - Thu, 29 Oct
Multiple Airlines Logo
13:25 - 17:10
SYD
-
USM
31h 45m
1 stop
Multiple Airlines Logo
08:15 - 12:10
USM
-
SYD
23h 55m
2 stops
$850Multiple Airlines
Sat, 7 Nov - Sat, 14 Nov
Scoot Logo
21:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
19:45 - 12:10
USM
-
SYD
12h 25m
1 stop
$851Scoot
Thu, 15 Oct - Thu, 29 Oct
Multiple Airlines Logo
13:25 - 07:10
SYD
-
USM
21h 45m
2 stops
Multiple Airlines Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$873Multiple Airlines
Mon, 9 Nov - Sat, 14 Nov

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Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
7 Nov
SYD13:25Sydney Kingsford Smith
33h 25m
1 stop
USM18:50Ko Samui
14 Nov
USM08:55Ko Samui
29h 55m
1 stop
SYD18:50Sydney Kingsford Smith
$636
Scoot
9 Nov
SYD20:05Sydney Kingsford Smith
25h 05m
1 stop
USM17:10Ko Samui
14 Nov
USM08:55Ko Samui
29h 55m
1 stop
SYD18:50Sydney Kingsford Smith
$745
Scoot
13 Oct
SYD14:00Sydney Kingsford Smith
32h 50m
1 stop
USM18:50Ko Samui
28 Oct
USM08:55Ko Samui
23h 15m
1 stop
SYD12:10Sydney Kingsford Smith
$770

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 19 June 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

Sat 7/11

13:25-18:50

1 stop33h 25m

Ko Samui

Sat 14/11

08:55-18:50

1 stop29h 55m

$636

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 9/11

20:05-17:10

1 stop25h 05m

Ko Samui

Sat 14/11

08:55-18:50

1 stop29h 55m

$745

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 13/10

14:00-18:50

1 stop32h 50m

Ko Samui

Wed 28/10

08:55-12:10

1 stop23h 15m

$770

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 12/9

20:35-20:25

2 stops26h 50m

Ko Samui

Thu 17/9

09:15-19:20

2 stops31h 05m

$790
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 14/10

21:35-18:50

1 stop25h 15m

Ko Samui

Thu 29/10

19:45-12:10

1 stop12h 25m

$795

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 25/10

20:05-18:50

1 stop26h 45m

Ko Samui

Sat 31/10

08:55-18:50

1 stop29h 55m

$812

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 13/10

21:35-18:50

1 stop25h 15m

Ko Samui

Thu 29/10

18:05-18:50

1 stop20h 45m

$813

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 7/11

13:25-17:10

1 stop31h 45m

Ko Samui

Sat 14/11

08:15-12:10

2 stops23h 55m

$850

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 15/10

21:35-18:50

1 stop25h 15m

Ko Samui

Thu 29/10

19:45-12:10

1 stop12h 25m

$851

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 9/11

13:25-07:10

2 stops21h 45m

Ko Samui

Sat 14/11

08:55-18:50

1 stop29h 55m

$873

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?

What is the cheapest month to fly to Ko Samui?

The month of October is, on average, the cheapest month to fly to Ko Samui from Sydney, with most prices found around $823. If you aren’t able to travel during the month of October, then book flights to Ko Samui from Sydney during March instead. Flights to Ko Samui in March, while not as cheap as those in October, still average around $830.

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 $1,082 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 $901 on momondo.

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

As of June 2026, prices for Sydney to Ko Samui flights are approximately 3% 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

11h 45m

Direct flights

Tue

Airports in Ko Samui

1 airport
The fastest flight from Sydney to Ko Samui takes 11h 45m
Direct flights go from Sydney to Ko Samui on Tuesday. There are no airlines offering direct flights..
There is 1 airport in Ko Samui. From Sydney there are direct flights to Ko Samui (USM).
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 11h 45m.

  • 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 $607Free cancellationRating
6.7
325 reviews
Search Scoot flights
Qantas AirwaysPriceFrom $990Free cancellationRating
7.5
1,047 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,120Free cancellationRating
8.2
1,545 reviews
Search Singapore Airlines flights
Bangkok AirwaysPriceFrom $1,214Free cancellationRating
8.1
133 reviews
Search Bangkok Airways flights
Thai AirwaysPriceFrom $1,251Free cancellationRating
7.9
407 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.

An easier way to manage your Ko Samui trip

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