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Cheap flights from Sydney to Ko Samui from $355

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 26/1. 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
20:50 - 17:20SYD-USM
23h 30m1 stop
Scoot Logo
19:45 - 11:45USM-SYD
13h 00m1 stop
$683Scoot
Find Deal
Tue, 21 Apr - Mon, 11 May
Scoot Logo
20:05 - 17:10SYD-USM
25h 05m1 stop
Scoot Logo
08:55 - 18:50USM-SYD
29h 55m1 stop
$718Scoot
Find Deal
Thu, 26 Feb - Fri, 13 Mar
Scoot Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Scoot Logo
08:55 - 18:50USM-SYD
29h 55m1 stop
$810Scoot
Find Deal
Wed, 25 Feb - Sun, 1 Mar
Scoot Logo
20:05 - 17:10SYD-USM
25h 05m1 stop
Scoot Logo
19:45 - 18:50USM-SYD
19h 05m1 stop
$857Scoot
Find Deal
Mon, 16 Mar - Thu, 26 Mar
Multiple Airlines Logo
20:50 - 07:50SYD-USM
14h 00m1 stop
Multiple Airlines Logo
08:00 - 11:45USM-SYD
24h 45m2 stops
$863Multiple Airlines
Find Deal
Tue, 21 Apr - Mon, 11 May
Multiple Airlines Logo
13:35 - 07:10SYD-USM
45h 35m2 stops
Multiple Airlines Logo
19:45 - 12:20USM-SYD
12h 35m1 stop
$868Multiple Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar
Multiple Airlines Logo
20:50 - 15:10SYD-USM
21h 20m2 stops
Multiple Airlines Logo
07:00 - 07:20USM-SYD
21h 20m2 stops
$873Multiple Airlines
Find Deal
Tue, 12 May - Thu, 21 May
Scoot Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Scoot Logo
08:55 - 18:50USM-SYD
29h 55m1 stop
$879Scoot
Find Deal
Sat, 21 Feb - Fri, 27 Feb
Multiple Airlines Logo
20:05 - 18:55SYD-USM
26h 50m2 stops
Multiple Airlines Logo
07:00 - 12:20USM-SYD
25h 20m2 stops
$892Multiple Airlines
Find Deal
Mon, 16 Mar - Thu, 26 Mar
Scoot Logo
20:05 - 08:00SYD-USM
15h 55m1 stop
Scoot Logo
08:55 - 18:50USM-SYD
29h 55m1 stop
$894Scoot
Find Deal
Sun, 22 Feb - Wed, 4 Mar

Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
21 Apr
SYD20:50Sydney Kingsford Smith
23h 30m
1 stop
USM17:20Ko Samui
11 May
USM19:45Ko Samui
13h 00m
1 stop
SYD11:45Sydney Kingsford Smith
$683
Find similar
Scoot
26 Feb
SYD20:05Sydney Kingsford Smith
25h 05m
1 stop
USM17:10Ko Samui
13 Mar
USM08:55Ko Samui
29h 55m
1 stop
SYD18:50Sydney Kingsford Smith
$718
Find similar
Scoot
25 Feb
SYD20:05Sydney Kingsford Smith
15h 55m
1 stop
USM08:00Ko Samui
1 Mar
USM08:55Ko Samui
29h 55m
1 stop
SYD18:50Sydney Kingsford Smith
$810
Find similar

Qantas Airways flights from Sydney to Ko Samui

Our best Qantas Airways deals on Sydney to Ko Samui flight tickets
Qantas Airways
22 Feb
SYD15:55Sydney Kingsford Smith
30h 20m
1 stop
USM18:15Ko Samui
28 Feb
USM08:15Ko Samui
18h 20m
1 stop
SYD06:35Sydney Kingsford Smith
$1,306
Find similar
Qantas Airways
22 Feb
SYD14:30Sydney Kingsford Smith
31h 45m
1 stop
USM18:15Ko Samui
28 Feb
USM08:15Ko Samui
20h 10m
1 stop
SYD08:25Sydney Kingsford Smith
$1,309
Find similar
Qantas Airways
22 Feb
SYD15:55Sydney Kingsford Smith
30h 20m
1 stop
USM18:15Ko Samui
28 Feb
USM08:15Ko Samui
18h 20m
1 stop
SYD06:35Sydney Kingsford Smith
$1,310
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 3 December 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

Tue 21/4

20:50-17:20

1 stop23h 30m

Ko Samui

Mon 11/5

19:45-11:45

1 stop13h 00m

$683

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 26/2

20:05-17:10

1 stop25h 05m

Ko Samui

Fri 13/3

08:55-18:50

1 stop29h 55m

$718

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 25/2

20:05-08:00

1 stop15h 55m

Ko Samui

Sun 1/3

08:55-18:50

1 stop29h 55m

$810

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 16/3

20:05-17:10

1 stop25h 05m

Ko Samui

Thu 26/3

19:45-18:50

1 stop19h 05m

$857

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 21/4

20:50-07:50

1 stop14h 00m

Ko Samui

Mon 11/5

08:00-11:45

2 stops24h 45m

$863

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 16/3

13:35-07:10

2 stops45h 35m

Ko Samui

Thu 26/3

19:45-12:20

1 stop12h 35m

$868

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 12/5

20:50-15:10

2 stops21h 20m

Ko Samui

Thu 21/5

07:00-07:20

2 stops21h 20m

$872

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 21/2

20:05-08:00

1 stop15h 55m

Ko Samui

Fri 27/2

08:55-18:50

1 stop29h 55m

$879

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 16/3

20:05-18:55

2 stops26h 50m

Ko Samui

Thu 26/3

07:00-12:20

2 stops25h 20m

$892

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 22/2

20:05-08:00

1 stop15h 55m

Ko Samui

Wed 4/3

08:55-18:50

1 stop29h 55m

$894

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 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 $863. If you aren’t able to travel during the month of October, then book flights to Ko Samui from Sydney during August instead. Flights to Ko Samui in August, while not as cheap as those in October, still average around $898.

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 $1,124. 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 $1,290.

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 $946. Flights in the morning are often more expensive, with an average ticket price of $1,323.

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 $1,082 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 $914 on momondo.

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

As of December 2025, prices for Sydney to Ko Samui flights are approximately 7% 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 00m

Direct flights

None
The fastest flight from Sydney to Ko Samui takes 14h 00m
There are no direct flights from Sydney to Ko Samui. There are no popular flight routes from Sydney to Ko Samui.
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 00m.

  • 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 $640Free cancellationRating
6.7
311 reviews
Search Scoot flights
Singapore AirlinesPriceFrom $1,009Free cancellationRating
8.1
1,411 reviews
Search Singapore Airlines flights
Qantas AirwaysPriceFrom $1,077Free cancellationRating
7.5
947 reviews
Search Qantas Airways flights
Bangkok AirwaysPriceFrom $1,157Free cancellationRating
8.0
118 reviews
Search Bangkok Airways flights
Thai AirwaysPriceFrom $1,280Free cancellationRating
7.8
362 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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