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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 6/3. 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

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
08:40 - 20:20
USM
-
SYD
31h 40m
1 stop
$691Scoot
Tue, 3 Mar - Tue, 31 Mar
Scoot Logo
13:00 - 18:50
SYD
-
USM
32h 50m
1 stop
Scoot Logo
18:15 - 19:20
USM
-
SYD
22h 05m
1 stop
$693Scoot
Thu, 23 Apr - Sat, 9 May
Scoot Logo
13:00 - 18:50
SYD
-
USM
32h 50m
1 stop
Scoot Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$773Scoot
Tue, 2 Jun - Sun, 7 Jun
Scoot Logo
13:00 - 18:50
SYD
-
USM
32h 50m
1 stop
Scoot Logo
08:40 - 19:20
USM
-
SYD
31h 40m
1 stop
$781Scoot
Sat, 30 May - Sat, 6 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
$782Scoot
Wed, 3 Jun - Sun, 7 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
$786Scoot
Wed, 3 Jun - Sun, 7 Jun
Scoot Logo
13:00 - 07:45
SYD
-
USM
21h 45m
1 stop
Scoot Logo
11:05 - 19:20
USM
-
SYD
29h 15m
1 stop
$788Scoot
Thu, 23 Apr - Wed, 29 Apr
Scoot Logo
20:05 - 18:50
SYD
-
USM
26h 45m
1 stop
Scoot Logo
19:45 - 18:50
USM
-
SYD
19h 05m
1 stop
$789Scoot
Mon, 16 Mar - Mon, 23 Mar
Scoot Logo
20:05 - 18:50
SYD
-
USM
26h 45m
1 stop
Scoot Logo
08:55 - 18:50
USM
-
SYD
29h 55m
1 stop
$799Scoot
Sun, 15 Mar - Sun, 22 Mar
Multiple Airlines Logo
20:35 - 13:55
SYD
-
USM
20h 20m
2 stops
Multiple Airlines Logo
15:25 - 19:20
USM
-
SYD
24h 55m
2 stops
$811Multiple Airlines
Sat, 23 May - Sat, 30 May

Scoot flights from Sydney to Ko Samui

Our best Scoot deals on Sydney to Ko Samui flight tickets
Scoot
3 Mar
SYD20:05Sydney Kingsford Smith
26h 45m
1 stop
USM18:50Ko Samui
31 Mar
USM08:40Ko Samui
31h 40m
1 stop
SYD20:20Sydney Kingsford Smith
$690
Scoot
23 Apr
SYD13:00Sydney Kingsford Smith
32h 50m
1 stop
USM18:50Ko Samui
9 May
USM18:15Ko Samui
22h 05m
1 stop
SYD19:20Sydney Kingsford Smith
$693
Scoot
2 June
SYD13:00Sydney Kingsford Smith
32h 50m
1 stop
USM18:50Ko Samui
7 June
USM08:40Ko Samui
31h 40m
1 stop
SYD19:20Sydney Kingsford Smith
$773

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 31 January 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

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 3/3

20:05-18:50

1 stop26h 45m

Ko Samui

Tue 31/3

08:40-20:20

1 stop31h 40m

$690

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 23/4

13:00-18:50

1 stop32h 50m

Ko Samui

Sat 9/5

18:15-19:20

1 stop22h 05m

$693

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Tue 2/6

13:00-18:50

1 stop32h 50m

Ko Samui

Sun 7/6

08:40-19:20

1 stop31h 40m

$773

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 30/5

13:00-18:50

1 stop32h 50m

Ko Samui

Sat 6/6

08:40-19:20

1 stop31h 40m

$781

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 3/6

20:35-18:50

1 stop25h 15m

Ko Samui

Sun 7/6

08:40-11:45

1 stop24h 05m

$782

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Wed 3/6

20:35-18:50

1 stop25h 15m

Ko Samui

Sun 7/6

08:40-19:20

1 stop31h 40m

$786

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Thu 23/4

13:00-07:45

1 stop21h 45m

Ko Samui

Wed 29/4

11:05-19:20

1 stop29h 15m

$788

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Mon 16/3

20:05-18:50

1 stop26h 45m

Ko Samui

Mon 23/3

19:45-18:50

1 stop19h 05m

$789

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sun 15/3

20:05-18:50

1 stop26h 45m

Ko Samui

Sun 22/3

08:55-18:50

1 stop29h 55m

$799

SydneyKo Samui

SYD - USM

SYDUSM

Sydney Kingsford Smith

Sat 23/5

20:35-13:55

2 stops20h 20m

Ko Samui

Sat 30/5

15:25-19:20

2 stops24h 55m

$811

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 October is, on average, the cheapest month to fly to Ko Samui from Sydney, with most prices found around $802. 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 $848.

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 $1,015 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 $836 on momondo.

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

As of January 2026, prices for Sydney to Ko Samui flights are approximately 24% 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

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

  • 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 $595Free cancellationRating
6.7
316 reviews
Search Scoot flights
Singapore AirlinesPriceFrom $938Free cancellationRating
8.2
1,443 reviews
Search Singapore Airlines flights
Qantas AirwaysPriceFrom $973Free cancellationRating
7.5
982 reviews
Search Qantas Airways flights
Bangkok AirwaysPriceFrom $1,086Free cancellationRating
8.0
121 reviews
Search Bangkok Airways flights
Thai AirwaysPriceFrom $1,199Free cancellationRating
7.8
381 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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