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Cheap flights from Sydney to Ko Samui from $340

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 26/10. 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

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Find the cheapest flights from Sydney to Ko Samui

Cheap return flights

Enter your travel dates to find the best prices.
Scoot Logo
20:35 - 07:45
SYD
-
USM
14h 10m
1 stop
Scoot Logo
19:45 - 19:20
USM
-
SYD
20h 35m
1 stop
$773Scoot
ma., 10 aug. - on., 19 aug.
Multiple Airlines Logo
20:35 - 20:25
SYD
-
USM
26h 50m
2 stops
Multiple Airlines Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$796Multiple Airlines
on., 10 jun. - on., 17 jun.
Multiple Airlines Logo
20:35 - 16:55
SYD
-
USM
23h 20m
2 stops
Multiple Airlines Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$798Multiple Airlines
ma., 8 jun. - to., 18 jun.
Multiple Airlines Logo
20:35 - 16:55
SYD
-
USM
23h 20m
2 stops
Multiple Airlines Logo
12:30 - 19:20
USM
-
SYD
27h 50m
2 stops
$800Multiple Airlines
ma., 8 jun. - to., 18 jun.
Scoot Logo
20:40 - 18:50
SYD
-
USM
25h 10m
1 stop
Scoot Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$802Scoot
to., 21 mai - to., 4 jun.
Scoot Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$805Scoot
lø., 13 jun. - to., 18 jun.
Multiple Airlines Logo
20:35 - 14:40
SYD
-
USM
21h 05m
2 stops
Multiple Airlines Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$807Multiple Airlines
ti., 9 jun. - on., 17 jun.
Scoot Logo
20:35 - 18:50
SYD
-
USM
25h 15m
1 stop
Scoot Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$812Scoot
on., 10 jun. - on., 17 jun.
Scoot Logo
20:35 - 07:45
SYD
-
USM
14h 10m
1 stop
Scoot Logo
08:40 - 11:45
USM
-
SYD
24h 05m
1 stop
$814Scoot
ma., 8 jun. - to., 18 jun.
Multiple Airlines Logo
20:35 - 20:25
SYD
-
USM
26h 50m
2 stops
Multiple Airlines Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$816Multiple Airlines
ma., 8 jun. - ma., 15 jun.

Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
10 Aug
SYD20:35Sydney Kingsford Smith
14h 10m
1 stop
USM07:45Ko Samui
19 Aug
USM19:45Ko Samui
20h 35m
1 stop
SYD19:20Sydney Kingsford Smith
$773
Scoot
21 May
SYD20:40Sydney Kingsford Smith
25h 10m
1 stop
USM18:50Ko Samui
4 June
USM08:40Ko Samui
31h 40m
1 stop
SYD19:20Sydney Kingsford Smith
$802
Scoot
13 June
SYD20:35Sydney Kingsford Smith
25h 15m
1 stop
USM18:50Ko Samui
18 June
USM08:40Ko Samui
24h 05m
1 stop
SYD11:45Sydney Kingsford Smith
$805

Qantas Airways flights from Sydney to Ko Samui

Our best Qantas Airways deals on Sydney to Ko Samui flight tickets
Qantas Airways
9 May
SYD21:50Sydney Kingsford Smith
26h 20m
2 stops
USM21:10Ko Samui
13 May
USM16:25Ko Samui
11h 20m
1 stop
SYD06:45Sydney Kingsford Smith
$1,612
Qantas Airways
9 May
SYD21:50Sydney Kingsford Smith
26h 20m
2 stops
USM21:10Ko Samui
13 May
USM13:30Ko Samui
14h 15m
1 stop
SYD06:45Sydney Kingsford Smith
$1,618
Qantas Airways
9 May
SYD14:45Sydney Kingsford Smith
30h 30m
1 stop
USM18:15Ko Samui
13 May
USM16:25Ko Samui
16h 50m
2 stops
SYD12:15Sydney Kingsford Smith
$1,648

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 2 mai 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
Fastest return journey

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ma. 10/8

20:35-07:45

1 stop14h 10m

Ko Samui

on. 19/8

19:45-19:20

1 stop20h 35m

$773

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

on. 10/6

20:35-20:25

2 stops26h 50m

Ko Samui

on. 17/6

08:40-19:20

1 stop31h 40m

$796

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ma. 8/6

20:35-16:55

2 stops23h 20m

Ko Samui

to. 18/6

08:40-11:45

1 stop24h 05m

$798

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ma. 8/6

20:35-16:55

2 stops23h 20m

Ko Samui

to. 18/6

12:30-19:20

2 stops27h 50m

$800

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

to. 21/5

20:40-18:50

1 stop25h 10m

Ko Samui

to. 4/6

08:40-19:20

1 stop31h 40m

$802

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

lø. 13/6

20:35-18:50

1 stop25h 15m

Ko Samui

to. 18/6

08:40-11:45

1 stop24h 05m

$805

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ti. 9/6

20:35-14:40

2 stops21h 05m

Ko Samui

on. 17/6

08:40-19:20

1 stop31h 40m

$807

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

on. 10/6

20:35-18:50

1 stop25h 15m

Ko Samui

on. 17/6

08:40-19:20

1 stop31h 40m

$812

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ma. 8/6

20:35-07:45

1 stop14h 10m

Ko Samui

to. 18/6

08:40-11:45

1 stop24h 05m

$814

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

ma. 8/6

20:35-20:25

2 stops26h 50m

Ko Samui

ma. 15/6

08:40-19:20

1 stop31h 40m

$816

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 $684. 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 $809.

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 $988 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 $778 on momondo.

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

As of May 2026, prices for Sydney to Ko Samui flights are approximately 10% 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

Fastest flight time

11h 50m

Direct flights

Sun

Airports in Ko Samui

1 airport
The fastest flight from Sydney to Ko Samui takes 11h 50m
Direct flights go from Sydney to Ko Samui on Sunday. 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 50m.

  • 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 $578Free cancellationRating
6.7
326 reviews
Search Scoot flights
Qantas AirwaysPriceFrom $980Free cancellationRating
7.5
1,030 reviews
Search Qantas Airways flights
Singapore AirlinesPriceFrom $1,039Free cancellationRating
8.2
1,506 reviews
Search Singapore Airlines flights
Bangkok AirwaysPriceFrom $1,183Free cancellationRating
8.1
127 reviews
Search Bangkok Airways flights
Thai AirwaysPriceFrom $1,218Free cancellationRating
7.9
401 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 Tao
Ko Pha Ngan
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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